From exim@www1.ietf.org Mon Feb 2 03:30:43 2004 Received: from optimus.ietf.org ([132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA25110 for ; Mon, 2 Feb 2004 03:30:43 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AnZTC-0002Iw-GO for avt-archive@odin.ietf.org; Mon, 02 Feb 2004 03:30:14 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i128UEkr008850 for avt-archive@odin.ietf.org; Mon, 2 Feb 2004 03:30:14 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AnZT0-0002GZ-GZ; Mon, 02 Feb 2004 03:30:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AnZSX-0002Dx-19 for avt@optimus.ietf.org; Mon, 02 Feb 2004 03:29:33 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA25005 for ; Mon, 2 Feb 2004 03:29:30 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AnZSU-0003MA-00 for avt@ietf.org; Mon, 02 Feb 2004 03:29:30 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AnZOg-0002eB-00 for avt@ietf.org; Mon, 02 Feb 2004 03:25:34 -0500 Received: from eagle.ericsson.se ([193.180.251.53]) by ietf-mx with esmtp (Exim 4.12) id 1AnZNv-0002Wj-00 for avt@ietf.org; Mon, 02 Feb 2004 03:24:47 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by eagle.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i128OmAh014515 for ; Mon, 2 Feb 2004 09:24:48 +0100 Received: from esealnt610.al.sw.ericsson.se ([153.88.254.120]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Mon, 2 Feb 2004 09:24:47 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt610.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 1AZZZB9B; Mon, 2 Feb 2004 09:25:09 +0100 Message-ID: <401E08DF.8010605@ericsson.com> Date: Mon, 02 Feb 2004 09:22:55 +0100 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: avt@ietf.org CC: Ladan Gharai , Colin Perkins Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 02 Feb 2004 08:24:47.0931 (UTC) FILETIME=[052D80B0:01C3E966] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] WG Last Call: draft-ietf-avt-uncomp-video-05.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit This is to announce a working group last call on the RTP Payload Format for Uncompressed Video (draft-ietf-avt-uncomp-video-05.txt). http://www.ietf.org/internet-drafts/draft-ietf-avt-uncomp-video-05.txt Please send any final comments on this draft to the mailing list by Monday 16th February 2004. At that time, we will consider if it is appropriate to request publication of this draft as a proposed standard RFC. Note that this draft will not be advanced until we receive at least one valid review from someone not directly involved with production of the draft (i.e., not an author or contributor). Best Regards Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 2 04:33:40 2004 Received: from optimus.ietf.org ([132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA29055 for ; Mon, 2 Feb 2004 04:33:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AnaS9-0000sA-85 for avt-archive@odin.ietf.org; Mon, 02 Feb 2004 04:33:13 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i129XC5B003306 for avt-archive@odin.ietf.org; Mon, 2 Feb 2004 04:33:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AnaRx-0000qU-GW; Mon, 02 Feb 2004 04:33:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AnaRP-0000oY-U2 for avt@optimus.ietf.org; Mon, 02 Feb 2004 04:32:27 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA28986 for ; Mon, 2 Feb 2004 04:32:24 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AnaRM-0003tV-00 for avt@ietf.org; Mon, 02 Feb 2004 04:32:25 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AnaQQ-0003oM-00 for avt@ietf.org; Mon, 02 Feb 2004 04:31:26 -0500 Received: from eagle.ericsson.se ([193.180.251.53]) by ietf-mx with esmtp (Exim 4.12) id 1AnaPk-0003jf-00 for avt@ietf.org; Mon, 02 Feb 2004 04:30:44 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by eagle.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i129UjAh004295 for ; Mon, 2 Feb 2004 10:30:45 +0100 Received: from esealnt610.al.sw.ericsson.se ([153.88.254.120]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Mon, 2 Feb 2004 10:30:44 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt610.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 1AZZ5AAY; Mon, 2 Feb 2004 10:31:06 +0100 Message-ID: <401E1854.5050602@ericsson.com> Date: Mon, 02 Feb 2004 10:28:52 +0100 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: avt@ietf.org References: <401E08DF.8010605@ericsson.com> In-Reply-To: <401E08DF.8010605@ericsson.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 02 Feb 2004 09:30:44.0262 (UTC) FILETIME=[3B55B460:01C3E96F] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] My email diclaimer Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, As some people may have seen my last mail included a disclaimer. I have previously given my opinion on the list about these, as being often contradicting to the purpose of this list. Any email to the AVT list is an open communication that is allowed to be read by anyone, and which is publicly archived. Unfortunately, this disclaimer is added without any control of me, and I haven't yet been able to do anything about it. The future will show if I can get of rid of it. However as a clarification to the first paragraph in the disclaimer: For emails with the AVT WG as an addressee, the communication is intended to be open and is allowed to be read by anyone, including people reading this from the IETF archive. I am sorry Magnus Magnus Westerlund (KI/EAB) wrote: > > >This communication is confidential and intended solely for the >addressee(s). Any unauthorized review, use, disclosure or distribution >is prohibited. If you believe this message has been sent to you in >error, please notify the sender by replying to this transmission and >delete the message without disclosing it. Thank you. > >E-mail including attachments is susceptible to data corruption, >interruption, unauthorized amendment, tampering and viruses, and we only >send and receive e-mails on the basis that we are not liable for any >such corruption, interception, amendment, tampering or viruses or any >consequences thereof. > > > -- Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 2 15:56:08 2004 Received: from optimus.ietf.org ([132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA08558 for ; Mon, 2 Feb 2004 15:56:08 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Anl6a-0006Uk-LO for avt-archive@odin.ietf.org; Mon, 02 Feb 2004 15:55:40 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i12KtefM024917 for avt-archive@odin.ietf.org; Mon, 2 Feb 2004 15:55:40 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Anl5z-0006O8-EA; Mon, 02 Feb 2004 15:55:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Anl5X-0006MX-AM for avt@optimus.ietf.org; Mon, 02 Feb 2004 15:54:35 -0500 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA08365; Mon, 2 Feb 2004 15:54:32 -0500 (EST) Message-Id: <200402022054.PAA08365@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: IETF-Announce: ; Cc: avt@ietf.org From: Internet-Drafts@ietf.org Reply-to: Internet-Drafts@ietf.org Date: Mon, 02 Feb 2004 15:54:32 -0500 Subject: [AVT] I-D ACTION:draft-ietf-avt-rtcp-feedback-08.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Audio/Video Transport Working Group of the IETF. Title : Extended RTP Profile for RTCP-based Feedback(RTP/AVPF) Author(s) : J. Ott, S. Wenger Filename : draft-ietf-avt-rtcp-feedback-08.txt Pages : 54 Date : 2004-2-2 Real-time media streams that use RTP are, to some degree, resilient against packet losses. Receivers may use the base mechanisms of RTCP to report packet reception statistics and thus allow a sender to adapt its transmission behavior in the mid-term as sole means for feedback and feedback-based error repair (besides a few codec- specific mechanisms). This document defines an extension to the Audio-visual Profile (AVP) that enables receivers to provide, statistically, more immediate feedback to the senders and thus allow for short-term adaptation and efficient feedback-based repair mechanisms to be implemented. This early feedback profile (AVPF) maintains the AVP bandwidth constraints for RTCP and preserves scalability to large groups. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-avt-rtcp-feedback-08.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-avt-rtcp-feedback-08.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-avt-rtcp-feedback-08.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2004-2-2150002.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-avt-rtcp-feedback-08.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-avt-rtcp-feedback-08.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2004-2-2150002.I-D@ietf.org> --OtherAccess-- --NextPart-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 2 15:56:30 2004 Received: from optimus.ietf.org ([132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA08612 for ; Mon, 2 Feb 2004 15:56:30 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Anl6x-0006aU-0C for avt-archive@odin.ietf.org; Mon, 02 Feb 2004 15:56:03 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i12Ku228025289 for avt-archive@odin.ietf.org; Mon, 2 Feb 2004 15:56:02 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Anl6v-0006Za-T1; Mon, 02 Feb 2004 15:56:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Anl6a-0006Th-2G for avt@optimus.ietf.org; Mon, 02 Feb 2004 15:55:40 -0500 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA08446; Mon, 2 Feb 2004 15:55:36 -0500 (EST) Message-Id: <200402022055.PAA08446@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: IETF-Announce: ; Cc: dccp@ietf.org, avt@ietf.org From: Internet-Drafts@ietf.org Reply-to: Internet-Drafts@ietf.org Date: Mon, 02 Feb 2004 15:55:36 -0500 Subject: [AVT] I-D ACTION:draft-ietf-dccp-user-guide-01.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Datagram Congestion Control Protocol Working Group of the IETF. Title : Datagram Congestion Control Protocol (DCCP) User Guide Author(s) : T. Phelan Filename : draft-ietf-dccp-user-guide-01.txt Pages : 19 Date : 2004-2-2 This document is an informative reference discussing strategies for using DCCP as the transport protocol for various applications. The focus is on how applications can make use of the capabilities, and deal with the idiosyncrasies, of DCCP. Of particular interest is how UDP applications, which have traditionally ignored congestion control issues, can adapt to a congestion controlled transport. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-dccp-user-guide-01.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-dccp-user-guide-01.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-dccp-user-guide-01.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2004-2-2150109.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-dccp-user-guide-01.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-dccp-user-guide-01.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2004-2-2150109.I-D@ietf.org> --OtherAccess-- --NextPart-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 2 16:10:32 2004 Received: from optimus.ietf.org ([132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id QAA10621 for ; Mon, 2 Feb 2004 16:10:32 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AnlKW-0008CB-BB for avt-archive@odin.ietf.org; Mon, 02 Feb 2004 16:10:04 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i12LA4G9031487 for avt-archive@odin.ietf.org; Mon, 2 Feb 2004 16:10:04 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AnlKV-0008BZ-6w; Mon, 02 Feb 2004 16:10:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AnlJn-00087L-0a for avt@optimus.ietf.org; Mon, 02 Feb 2004 16:09:19 -0500 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id QAA10221; Mon, 2 Feb 2004 16:09:15 -0500 (EST) Message-Id: <200402022109.QAA10221@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: IETF-Announce: ; Cc: avt@ietf.org From: Internet-Drafts@ietf.org Reply-to: Internet-Drafts@ietf.org Date: Mon, 02 Feb 2004 16:09:15 -0500 Subject: [AVT] I-D ACTION:draft-hatanaka-avt-rtp-atrac-family-00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : RTP payload format for ATRAC family Author(s) : M. Hatanaka Filename : draft-hatanaka-avt-rtp-atrac-family-00.txt Pages : 7 Date : 2004-2-2 This document describes an RTP payload format for efficient and flexible transporting of audio data encoded with the ATRAC family of codecs. Recent enhancements to the ATRAC family of codecs support high quality audio coding with multiple channels. The RTP payload format as presented in this document includes support for data fragmentation and elementary redundancy measures. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-hatanaka-avt-rtp-atrac-family-00.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-hatanaka-avt-rtp-atrac-family-00.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-hatanaka-avt-rtp-atrac-family-00.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2004-2-2150655.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-hatanaka-avt-rtp-atrac-family-00.txt --OtherAccess Content-Type: Message/External-body; name="draft-hatanaka-avt-rtp-atrac-family-00.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2004-2-2150655.I-D@ietf.org> --OtherAccess-- --NextPart-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 2 19:43:38 2004 Received: from optimus.ietf.org ([132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id TAA27517 for ; Mon, 2 Feb 2004 19:43:38 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Anoek-0000AT-1m for avt-archive@odin.ietf.org; Mon, 02 Feb 2004 19:43:10 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i130h962000596 for avt-archive@odin.ietf.org; Mon, 2 Feb 2004 19:43:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Anoeb-000086-9W; Mon, 02 Feb 2004 19:43:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Anodi-00006y-Gn for avt@optimus.ietf.org; Mon, 02 Feb 2004 19:42:06 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id TAA27441 for ; Mon, 2 Feb 2004 19:42:04 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Anodg-000770-00 for avt@ietf.org; Mon, 02 Feb 2004 19:42:04 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Anocq-00070u-00 for avt@ietf.org; Mon, 02 Feb 2004 19:41:13 -0500 Received: from us-msx-mwd02.mwd.dst.ca.us ([144.166.140.26]) by ietf-mx with esmtp (Exim 4.12) id 1Anobx-0006na-00 for avt@ietf.org; Mon, 02 Feb 2004 19:40:17 -0500 Received: by us-msx-mwd02 with Internet Mail Service (5.5.2653.19) id <1F8AV2JC>; Mon, 2 Feb 2004 16:39:41 -0800 Message-ID: From: "Holmes,David A" To: "'avt@ietf.org'" Date: Mon, 2 Feb 2004 16:39:41 -0800 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="iso-8859-1" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Subject: [AVT] RTCP in the Multicast Environment Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , I'm new to the mailing list. I am looking for information on how RTCP is implemented in a one-sender to many-receiver multicast environment. In particular, I am interested in how the sender uses jitter, packet loss, etc. feedback from the receivers to modulate the multicast stream. For instance, in a network in which receivers are located at various leaf nodes of a multicast tree, can one congested leaf node throttle the sender such that all leaf node receivers are throttled, even if they are not congested? David Holmes _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 5 08:00:39 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id IAA14084 for ; Thu, 5 Feb 2004 08:00:39 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aoj73-0000K9-NK for avt-archive@odin.ietf.org; Thu, 05 Feb 2004 08:00:09 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i15D09AE001195 for avt-archive@odin.ietf.org; Thu, 5 Feb 2004 08:00:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aoj6w-0000IL-S8; Thu, 05 Feb 2004 08:00:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aoj5x-0000F1-QL for avt@optimus.ietf.org; Thu, 05 Feb 2004 07:59:01 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA14037 for ; Thu, 5 Feb 2004 07:59:00 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aoj5w-0003ol-00 for avt@ietf.org; Thu, 05 Feb 2004 07:59:00 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Aoj54-0003jf-00 for avt@ietf.org; Thu, 05 Feb 2004 07:58:07 -0500 Received: from eagle.ericsson.se ([193.180.251.53]) by ietf-mx with esmtp (Exim 4.12) id 1Aoj4e-0003ds-00 for avt@ietf.org; Thu, 05 Feb 2004 07:57:40 -0500 Received: from esealmw141.al.sw.ericsson.se ([153.88.254.120]) by eagle.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i15CvdAh027635 for ; Thu, 5 Feb 2004 13:57:39 +0100 Received: from esealnt613.al.sw.ericsson.se ([153.88.254.125]) by esealmw141.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Thu, 5 Feb 2004 13:57:39 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt613.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 1AZBCS47; Thu, 5 Feb 2004 13:57:39 +0100 Message-ID: <40223D4C.4020209@ericsson.com> Date: Thu, 05 Feb 2004 13:55:40 +0100 X-Sybari-Trust: efa1a901 6b512624 6c3547e6 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: avt@ietf.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 05 Feb 2004 12:57:39.0457 (UTC) FILETIME=[A29B5F10:01C3EBE7] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] The RTP payload format for multichannel codecs's signalling problem Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, Colin raised in Minneapolis a concern regarding the channel signalling for the AMR-WB+ payload format. The AMR-WB+ codec has both mono and stereo modes. On a codec level the difference is detected based on the frame type (FT) indicator for each frame. It is technical possible to switch between modes, but it does not provide as good switching performance as between the classic AMR-WB mono modes. However this codec "internal" or inband information about channels, modes etc. creates problem on RTP level and for the signalling. The problems described here is not limited to the AMR-WB+ codec, but does also effect other channels with internal signalling for different channel configuration. The signalling problem is that the current practice of defining a MIME type and parameters and include them in SDP is not really capable of expressing the codecs capabilities in a good way. As it looks now, each declared payload type (PT) can only mean one channel configuration plus other parameter configuration. This has not been a problem as long as one uses the PT field for its intended usage to the fully, i.e. having codec, packetization and all parameters being encoded in the PT: For example a stereo 16-bit PCM encoded audio stream is easy to describe with a MIME type and a couple of parameters: L16, frequency=44000, channels=2. Using the PT as intended also has the advantage of simplifying payload design, having the information explicit in the RTP header (thus avoiding per payload format special investigation for demultiplexing). However with the payload inband signalling of this information, it gets concealed within the payload. This results in that declarative explicitness is diminished, and creates problem in cases of negotiation, like for SIP using Offer/Answer. For example, one possible solution for AMR-WB+ could be to declare a single payload type, which is always declared as being stereo. Thus expressing the full span of the codec capabilities. However if one only intends to use mono modes, this can't be expressed in this solution. It also forces a receiver application to set up resources beyond the what is really needed. To maintain the declarative explicitness and uses the available mechanisms it will mean that one will need to declare different PTs for each channel configuration. Which would mean that an AMR-WB declaration possibly using both mono and stereo would look like this in SDP: m=audio 49120 RTP/AVP 98 99 a=rtpmap:98 AMR-WB+/96000/1 a=fmtp:98 interleaving=30 a=rtpmap:99 AMR-WB+/96000/2 a=fmtp:99 interleaving=30 However I would also like to point out that using too many PTs are not also not advisable, especially in regards to mechanisms like RTP retransmission that requires you to double the number of PTs used. However this should not be a concern unless we start using 10 or more PTs per codec. So which alternative is better in your opinion, or do you have another proposal on how to solve the problem? Best Regards Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 5 13:38:38 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA27942 for ; Thu, 5 Feb 2004 13:38:38 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AooO9-0005gh-Al for avt-archive@odin.ietf.org; Thu, 05 Feb 2004 13:38:09 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i15Ic9s0021804 for avt-archive@odin.ietf.org; Thu, 5 Feb 2004 13:38:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AooO1-0005d8-8f; Thu, 05 Feb 2004 13:38:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AooNP-0005NU-4b for avt@optimus.ietf.org; Thu, 05 Feb 2004 13:37:23 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA27906 for ; Thu, 5 Feb 2004 13:37:21 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AooNM-0006r9-00 for avt@ietf.org; Thu, 05 Feb 2004 13:37:20 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AooMN-0006kH-00 for avt@ietf.org; Thu, 05 Feb 2004 13:36:20 -0500 Received: from zcars04f.nortelnetworks.com ([47.129.242.57]) by ietf-mx with esmtp (Exim 4.12) id 1AooM4-0006dF-00 for avt@ietf.org; Thu, 05 Feb 2004 13:36:00 -0500 Received: from zcard307.ca.nortel.com (zcard307.ca.nortel.com [47.129.242.67]) by zcars04f.nortelnetworks.com (Switch-2.2.6/Switch-2.2.0) with ESMTP id i15IZPC01509; Thu, 5 Feb 2004 13:35:25 -0500 (EST) Received: from zcard0kc.ca.nortel.com ([47.129.242.164]) by zcard307.ca.nortel.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id 1FNDH1A1; Thu, 5 Feb 2004 13:35:24 -0500 Received: from nortelnetworks.com (acart1de.ca.nortel.com [47.129.129.90]) by zcard0kc.ca.nortel.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id DBDZJ12A; Thu, 5 Feb 2004 13:35:24 -0500 Message-ID: <40228CEB.3010508@nortelnetworks.com> Date: Thu, 05 Feb 2004 13:35:23 -0500 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: Tom Taylor User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6b) Gecko/20031205 Thunderbird/0.4 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Magnus Westerlund CC: avt@ietf.org Subject: Re: [AVT] The RTP payload format for multichannel codecs's signalling problem References: <40223D4C.4020209@ericsson.com> In-Reply-To: <40223D4C.4020209@ericsson.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit We have a similar problem with distinguishing between audio, voice-band data (high speed and low speed), voice-band text, and voice-band FAX. Each of these requires a different combination of treatments in terms of echo cancellor operation, silence suppression, and jitter buffer operation. Magnus Westerlund wrote: > Hi, > > Colin raised in Minneapolis a concern regarding the channel signalling > for the AMR-WB+ payload format. The AMR-WB+ codec has both mono and > stereo modes. On a codec level the difference is detected based on the > frame type (FT) indicator for each frame. It is technical possible to > switch between modes, but it does not provide as good switching > performance as between the classic AMR-WB mono modes. However this codec > "internal" or inband information about channels, modes etc. creates > problem on RTP level and for the signalling. The problems described here > is not limited to the AMR-WB+ codec, but does also effect other channels > with internal signalling for different channel configuration. > > The signalling problem is that the current practice of defining a MIME > type and parameters and include them in SDP is not really capable of > expressing the codecs capabilities in a good way. As it looks now, each > declared payload type (PT) can only mean one channel configuration plus > other parameter configuration. > > This has not been a problem as long as one uses the PT field for its > intended usage to the fully, i.e. having codec, packetization and all > parameters being encoded in the PT: For example a stereo 16-bit PCM > encoded audio stream is easy to describe with a MIME type and a couple > of parameters: L16, frequency=44000, channels=2. Using the PT as > intended also has the advantage of simplifying payload design, having > the information explicit in the RTP header (thus avoiding per payload > format special investigation for demultiplexing). However with the > payload inband signalling of this information, it gets concealed within > the payload. > > This results in that declarative explicitness is diminished, and creates > problem in cases of negotiation, like for SIP using Offer/Answer. For > example, one possible solution for AMR-WB+ could be to declare a single > payload type, which is always declared as being stereo. Thus expressing > the full span of the codec capabilities. However if one only intends to > use mono modes, this can't be expressed in this solution. It also forces > a receiver application to set up resources beyond the what is really > needed. > > To maintain the declarative explicitness and uses the available > mechanisms it will mean that one will need to declare different PTs for > each channel configuration. Which would mean that an AMR-WB declaration > possibly using both mono and stereo would look like this in SDP: > > m=audio 49120 RTP/AVP 98 99 > a=rtpmap:98 AMR-WB+/96000/1 > a=fmtp:98 interleaving=30 > a=rtpmap:99 AMR-WB+/96000/2 > a=fmtp:99 interleaving=30 > > However I would also like to point out that using too many PTs are not > also not advisable, especially in regards to mechanisms like RTP > retransmission that requires you to double the number of PTs used. > However this should not be a concern unless we start using 10 or more > PTs per codec. > > So which alternative is better in your opinion, or do you have another > proposal on how to solve the problem? > > > Best Regards > > Magnus Westerlund > Multimedia Technologies, Ericsson Research EAB/TVA/A > ---------------------------------------------------------------------- > Ericsson AB | Phone +46 8 4048287 > Torshamsgatan 23 | Fax +46 8 7575550 > S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com > > > > This communication is confidential and intended solely for the > addressee(s). Any unauthorized review, use, disclosure or distribution > is prohibited. If you believe this message has been sent to you in > error, please notify the sender by replying to this transmission and > delete the message without disclosing it. Thank you. > > E-mail including attachments is susceptible to data corruption, > interruption, unauthorized amendment, tampering and viruses, and we only > send and receive e-mails on the basis that we are not liable for any > such corruption, interception, amendment, tampering or viruses or any > consequences thereof. > > > _______________________________________________ > Audio/Video Transport Working Group > avt@ietf.org > https://www1.ietf.org/mailman/listinfo/avt > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 5 17:08:38 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA15602 for ; Thu, 5 Feb 2004 17:08:38 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AorfO-0006EV-Qm for avt-archive@odin.ietf.org; Thu, 05 Feb 2004 17:08:11 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i15M8AIf023908 for avt-archive@odin.ietf.org; Thu, 5 Feb 2004 17:08:10 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AorfF-00068i-Em; Thu, 05 Feb 2004 17:08:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aoreh-000634-5m for avt@optimus.ietf.org; Thu, 05 Feb 2004 17:07:27 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA15507 for ; Thu, 5 Feb 2004 17:07:24 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aoree-0001XW-00 for avt@ietf.org; Thu, 05 Feb 2004 17:07:25 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Aordj-0001VN-00 for avt@ietf.org; Thu, 05 Feb 2004 17:06:27 -0500 Received: from ns.live.com ([66.80.62.34]) by ietf-mx with esmtp (Exim 4.12) id 1AordO-0001SV-00 for avt@ietf.org; Thu, 05 Feb 2004 17:06:06 -0500 Received: from ns.live.com (localhost.live.com [127.0.0.1]) by ns.live.com (8.12.10/8.12.10) with ESMTP id i15M5tXe050523 for ; Thu, 5 Feb 2004 14:05:59 -0800 (PST) (envelope-from rsf@ns.live.com) Received: (from rsf@localhost) by ns.live.com (8.12.10/8.12.9/Submit) id i15M5siN050510; Thu, 5 Feb 2004 14:05:54 -0800 (PST) (envelope-from rsf) Message-Id: <6.0.1.1.1.20040205135742.03461eb0@localhost> X-Sender: rsf@localhost (Unverified) X-Mailer: QUALCOMM Windows Eudora Version 6.0.1.1 Date: Thu, 05 Feb 2004 14:04:37 -0800 To: avt@ietf.org From: Ross Finlayson Subject: Re: [AVT] The RTP payload format for multichannel codecs's signalling problem In-Reply-To: <40223D4C.4020209@ericsson.com> References: <40223D4C.4020209@ericsson.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , It seems to me that for any codec that carries channel etc. parameters inband - and allows these parameters to change 'on the fly' - there is an implicit assumption that each receiver should be able to handle all possible settings of these inband parameters. So, given this, your first proposed solution seems to make the most sense: Declare the AMR-WB+ RTP payload type to be for stereo, even though all frames within such a stream might actually turn out to be mono. Ross. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Fri Feb 6 03:11:52 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA16108 for ; Fri, 6 Feb 2004 03:11:52 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ap15A-0007lJ-VQ for avt-archive@odin.ietf.org; Fri, 06 Feb 2004 03:11:25 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i168BOTo029831 for avt-archive@odin.ietf.org; Fri, 6 Feb 2004 03:11:24 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ap14n-0007kC-Tw; Fri, 06 Feb 2004 03:11:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ap14M-0007iB-9E for avt@optimus.ietf.org; Fri, 06 Feb 2004 03:10:34 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA16084 for ; Fri, 6 Feb 2004 03:10:30 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Ap14I-0003Oa-00 for avt@ietf.org; Fri, 06 Feb 2004 03:10:30 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Ap13L-0003Ml-00 for avt@ietf.org; Fri, 06 Feb 2004 03:09:31 -0500 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47]) by ietf-mx with esmtp (Exim 4.12) id 1Ap12Y-0003Kx-00 for avt@ietf.org; Fri, 06 Feb 2004 03:08:42 -0500 Received: from esealmw143.al.sw.ericsson.se ([153.88.254.118]) by penguin-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1688gYG018827 for ; Fri, 6 Feb 2004 09:08:42 +0100 (MET) Received: from esealnt613.al.sw.ericsson.se ([153.88.254.125]) by esealmw143.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Fri, 6 Feb 2004 09:08:42 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt613.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 1LJSL9KW; Fri, 6 Feb 2004 09:08:42 +0100 Message-ID: <40234B11.4010909@ericsson.com> Date: Fri, 06 Feb 2004 09:06:41 +0100 X-Sybari-Trust: 283a1894 6b512624 6c3547e6 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: avt@ietf.org CC: Colin Perkins Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 06 Feb 2004 08:08:42.0253 (UTC) FILETIME=[6F3DBBD0:01C3EC88] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Reminder: Deadlines for upcomming 59th IETF meeting Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, This is a reminder about the deadlines. The first one is already on Monday. If you have a initial draft, make sure to meet the deadline, the cut-off is handled in a strict way. The AVT WG is planning to have two sessions during the next IETF meeting, for a total of 4 or 4.5 hours. If you have issues or are going to submit drafts for the WG in Korea, please make note of the following deadlines. The deadline for submission of -00 internet-drafts is 9 am US EST (GMT -05:00) on Monday the 9th of February. Individual submissions intended for eventual working group discussion should be named draft--avt--00.txt. Initial working group drafts, which have previously been approved by the chairs, may use the draft-ietf-avt- prefix. The deadline for all other internet-draft submissions is Monday 16th of February at 9 am US EST. This day is also the last day to pre-register to the meeting, the cut-off is at 12.00 EST. Any one desiring to have a presentation and discussion during the AVT working group's slots in Seoul MUST request time on the agenda. A submission of a draft is not sufficient for receiving agenda time. Send the request before the 16th of February, 2003 at 24.00 GMT to BOTH chairs. In the request include the following information: A. Presentation Title: B. Name of presenter: C. Draft Reference(s): D. Requested amount of time in minutes: Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Fri Feb 6 07:18:36 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA22484 for ; Fri, 6 Feb 2004 07:18:36 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ap4vu-0008Dv-Fz for avt-archive@odin.ietf.org; Fri, 06 Feb 2004 07:18:07 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i16CI6dK031569 for avt-archive@odin.ietf.org; Fri, 6 Feb 2004 07:18:06 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ap4vp-0008Cd-3y; Fri, 06 Feb 2004 07:18:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ap4vU-0008Bs-QD for avt@optimus.ietf.org; Fri, 06 Feb 2004 07:17:40 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA22472 for ; Fri, 6 Feb 2004 07:17:39 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Ap4vU-0007ZD-00 for avt@ietf.org; Fri, 06 Feb 2004 07:17:40 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Ap4ua-0007Wd-00 for avt@ietf.org; Fri, 06 Feb 2004 07:16:44 -0500 Received: from smtp.eweka.nl ([81.171.101.3]) by ietf-mx with esmtp (Exim 4.12) id 1Ap4tk-0007U2-00 for avt@ietf.org; Fri, 06 Feb 2004 07:15:52 -0500 Received: from solstice (ew-dsl-81-171-14-60.eweka.nl [81.171.14.60]) by smtp.eweka.nl (8.12.9/8.12.9) with ESMTP id i16CKt1H020477; Fri, 6 Feb 2004 12:20:59 GMT (envelope-from a.vwijk@viataal.nl) Message-Id: <200402061220.i16CKt1H020477@smtp.eweka.nl> From: "Arnoud van Wijk" To: "'Tom Taylor'" , "'Magnus Westerlund'" Cc: Subject: RE: [AVT] The RTP payload format for multichannel codecs's signalling problem Date: Fri, 6 Feb 2004 13:15:56 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook, Build 11.0.5510 In-Reply-To: <40228CEB.3010508@nortelnetworks.com> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 thread-index: AcPsF1FdTD+aGp4eR6eXc2u79KKm+wAk3igg X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL,MISSING_OUTLOOK_NAME autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit For voice band text, I asume you mean V21 and V18 and Boudot and other text telephone protocols? Greetz Arnoud -----Original Message----- From: avt-admin@ietf.org [mailto:avt-admin@ietf.org] On Behalf Of Tom Taylor Sent: donderdag 5 februari 2004 19:35 To: Magnus Westerlund Cc: avt@ietf.org Subject: Re: [AVT] The RTP payload format for multichannel codecs's signalling problem We have a similar problem with distinguishing between audio, voice-band data (high speed and low speed), voice-band text, and voice-band FAX. Each of these requires a different combination of treatments in terms of echo cancellor operation, silence suppression, and jitter buffer operation. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sun Feb 8 07:25:40 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA17233 for ; Sun, 8 Feb 2004 07:25:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Apnzr-00071S-3b for avt-archive@odin.ietf.org; Sun, 08 Feb 2004 07:25:11 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i18CPAcw026889 for avt-archive@odin.ietf.org; Sun, 8 Feb 2004 07:25:10 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Apnzj-0006y0-MQ; Sun, 08 Feb 2004 07:25:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ap9NW-0002Zg-Hk for avt@optimus.ietf.org; Fri, 06 Feb 2004 12:02:58 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA04497 for ; Fri, 6 Feb 2004 12:02:51 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Ap9NV-0002Z7-00 for avt@ietf.org; Fri, 06 Feb 2004 12:02:53 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Ap9MW-0002Wg-00 for avt@ietf.org; Fri, 06 Feb 2004 12:01:53 -0500 Received: from waldorf.cs.uni-dortmund.de ([129.217.4.42]) by ietf-mx with esmtp (Exim 4.12) id 1Ap9MD-0002Te-00 for avt@ietf.org; Fri, 06 Feb 2004 12:01:33 -0500 Received: from andorfer.cs.uni-dortmund.de (andorfer [129.217.26.34]) by waldorf.cs.uni-dortmund.de with ESMTP id i16H12He019711 for ; Fri, 6 Feb 2004 18:01:02 +0100 (MET) Received: from hofbraeu.cs.uni-dortmund.de (hofbraeu [129.217.26.48]) by andorfer.cs.uni-dortmund.de id i16H12O25561; Fri, 6 Feb 2004 18:01:02 +0100 (MET) Received: from iceccs2004 by hofbraeu.cs.uni-dortmund.de with local (Exim 3.36 #1) id 1Ap9Li-0007Li-00 for avt@ietf.org; Fri, 06 Feb 2004 18:01:02 +0100 From: "ICECCS 2004" Reply-to: --------------------@ls5.cs.uni-dortmund.de Content-Type: text Message-Id: Date: Fri, 06 Feb 2004 18:01:02 +0100 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=2.0 required=5.0 tests=MIME_HEADER_CTYPE_ONLY, REMOVE_SUBJ autolearn=no version=2.60 Subject: [AVT] Conference and Worshop on Complex Computer Systems in Florence, ICECCS2004, WSCS Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Sorry for any multiple reception of this message, Send an email with REMOVE on the subject Cheers, Pierfrancesco Bellini, Bernhard Steffen, Shawn Bohner Paolo Nesi, Alessandro Fantechi, José-Luis Fernández-Villacañas _°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_° IEEE International Conference on Engineering of Complex Computer Systems, IEEE ICECCS, Florence, Italy, 14-16 April, 2004 http://www.dsi.unifi.it/iceccs04 _°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_° Workshop on Software and Complex Systems, WSCS 14th April 2004 , Florence , Italy This workshop will concentrate on how Software Technologies and Distributed Systems can help in the design and management of complex systems, linking industrial and academic partners, research and application. organised by: - European Commission, DG INFSO D3, INFSO, Software Technologies and Distributed Systems. - DISIT-DSI, Distributed Systems and Internet Technology, Department of Systems and Informatics, University of Florence http://www.dsi.unifi.it/iceccs04/ec-workshop.htm Chaired by: José-Luis Fernández-Villacañas, Paolo Nesi, Alessandro Fantechi _°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_° Topic Areas: related to complex computer-based systems, including the causes of complexity and means of avoiding, controlling, or coping with complexity. Topic areas includes, but are not limited to: * System and software architecture and system engineering * Tools, environments, and languages for complex systems * Formal methods and approaches to manage and control complex systems * Integration of heterogeneous technologies * Software and system development and control processes for complex systems * Human factors and collaborative aspects * Interoperability and standardization * Systems and software safety and security * Industrial automation, embedded and/or real time systems * Content production and distribution systems, mobile and multi-channel systems * Software complexity visualization * Virtual environments for managing complexity _°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_°_° _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sun Feb 8 07:25:43 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA17250 for ; Sun, 8 Feb 2004 07:25:43 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Apnzr-00071T-42 for avt-archive@odin.ietf.org; Sun, 08 Feb 2004 07:25:13 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i18CPAAk026888 for avt-archive@odin.ietf.org; Sun, 8 Feb 2004 07:25:10 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Apnzj-0006xs-3H; Sun, 08 Feb 2004 07:25:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ap2wg-00066y-TF for avt@optimus.ietf.org; Fri, 06 Feb 2004 05:10:46 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA18798 for ; Fri, 6 Feb 2004 05:10:43 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Ap2wd-0000tX-00 for avt@ietf.org; Fri, 06 Feb 2004 05:10:43 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Ap2vf-0000qn-00 for avt@ietf.org; Fri, 06 Feb 2004 05:09:43 -0500 Received: from csmail.ucc.ie ([143.239.211.231] ident=root) by ietf-mx with esmtp (Exim 4.12) id 1Ap2vB-0000nW-00 for avt@ietf.org; Fri, 06 Feb 2004 05:09:13 -0500 Received: from cs.ucc.ie (sapelo.ucc.ie [143.239.201.197]) by csmail.ucc.ie (8.12.10/8.12.10) with ESMTP id i16A9DtX027138 for ; Fri, 6 Feb 2004 10:09:13 GMT Message-ID: <402367CA.4070404@cs.ucc.ie> Date: Fri, 06 Feb 2004 10:09:14 +0000 From: "Cormac J. Sreenan" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 X-Accept-Language: en-us, en MIME-Version: 1.0 To: avt@ietf.org Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] 2nd CFP: NOSSDAV 2004 (Cork, Ireland) Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit 2nd CALL FOR PAPERS The 14th International Workshop on Network and Operating Systems Support for Digital Audio and Video (NOSSDAV 2004) June 16-18, 2004 --- Kinsale, County Cork, Ireland http://www.nossdav.org/2004/ NOSSDAV 2004 will take place in Kinsale on the exceptionally scenic southern coast of Ireland. Kinsale is approximately a 20 minute drive outside Cork city, which is within easy reach of major European capitals and the east coast of the US. The workshop is sponsored primarily by ACM SIG Multimedia, Microsoft Research and Science Foundation Ireland, with secondary sponsorship by IBM Research, and is being held in cooperation with ACM SIGCOMM and ACM SIGMOBILE (pending). NOSSDAV invites submissions on all areas of multimedia, but strongly encourages submissions in newly emerging specialized areas such as networked games and peer-to-peer streaming. NOSSDAV 2004 will be run very much as a workshop with an emphasis on cutting-edge research and lively discussion. Papers grounded in high-quality experimental research based on prototype or real systems, including innovative experimental commercial designs and prototypes, as well as papers proposing new research directions for the community or calling into question existing conventional wisdom are particularly welcome. STUDENT PARTICIPATION IS STRONGLY ENCOURAGED - supported by several student travel grants and registration fee rebates. Submissions should be no longer than 6 pages. The expectation is that papers accepted at the workshop will eventually lead to full-length papers at high-quality conferences or journals. The topics of interest include, but are not limited to: * Networked games * Peer-to-peer multimedia * Broadband streaming media content distribution * 3D multimedia and (networked) immersive environments * Wireless and ad-hoc network multimedia systems * Embedded multimedia devices (e.g., PVRs) * Multimedia security * Internet telephony * Sensory interactive applications * Digital rights management Deadlines: Paper registration deadline - February 23, 2004, (5pm EST) (*firm*) Paper submission deadline - March 1, 2004, (5pm EST) (*firm*) Program Co-Chairs: Venkat Padmanabhan, Microsoft Research (USA) Cormac Sreenan, University College Cork (Ireland) Email: nossdav2004-pcchairs@cs.ucc.ie Program Committee: Kevin Almeroth, UC Santa Barbara (USA) Ernst Biersack, Institut Eurecom (France) Phil Chou, Microsoft Research (USA) Christophe Diot, Intel Research (UK) Kevin Jeffay, UNC Chapel Hill (USA) Srinivasan Keshav, University of Waterloo (Canada) Sue Moon, KAIST (Korea) Reza Rejaie, University of Oregon (USA) Henning Schulzrinne, Columbia University (USA) Srinivasan Seshan, CMU (USA) Anees Shaikh, IBM Research (USA) Lars Wolf, TU Braunschweig (Germany) _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sun Feb 8 10:40:40 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA22487 for ; Sun, 8 Feb 2004 10:40:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Apr2a-0006z5-UW for avt-archive@odin.ietf.org; Sun, 08 Feb 2004 10:40:14 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i18FeChN026796 for avt-archive@odin.ietf.org; Sun, 8 Feb 2004 10:40:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Apr2S-0006xU-3L; Sun, 08 Feb 2004 10:40:04 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Apr1l-0006tG-A7 for avt@optimus.ietf.org; Sun, 08 Feb 2004 10:39:21 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA22480 for ; Sun, 8 Feb 2004 10:39:17 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Apr1j-00000r-00 for avt@ietf.org; Sun, 08 Feb 2004 10:39:19 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Apr0r-0007lT-00 for avt@ietf.org; Sun, 08 Feb 2004 10:38:25 -0500 Received: from ns.live.com ([66.80.62.34]) by ietf-mx with esmtp (Exim 4.12) id 1Apr0f-0007iB-00 for avt@ietf.org; Sun, 08 Feb 2004 10:38:13 -0500 Received: from ns.live.com (localhost.live.com [127.0.0.1]) by ns.live.com (8.12.10/8.12.10) with ESMTP id i18FcC6x050893 for ; Sun, 8 Feb 2004 07:38:12 -0800 (PST) (envelope-from rsf@ns.live.com) Received: (from rsf@localhost) by ns.live.com (8.12.10/8.12.9/Submit) id i18FcCD0050892; Sun, 8 Feb 2004 07:38:12 -0800 (PST) (envelope-from rsf) Message-Id: <6.0.1.1.1.20040208072946.02c6bc10@localhost> X-Sender: rsf@localhost (Unverified) X-Mailer: QUALCOMM Windows Eudora Version 6.0.1.1 Date: Sun, 08 Feb 2004 07:37:53 -0800 To: avt@ietf.org From: Ross Finlayson Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Subject: [AVT] Advancing the "audio/mpa-robust" RTP payload format to Draft Standard? Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , I have just submitted to the Internet Drafts editor an updated version of the "audio/mpa-robust" RTP payload format specification. This can also be found online as (This draft updates RFC 3119, correcting some typographical errors.) I have also submitted a new Internet Draft "draft-finlayson-avt-mpa-robust-interoperability-00.txt" (currently online as ) that notes interoperability between two (and in some cases three) independent implementations of this payload format. This is a requirement for advancing this payload format specification from "Proposed" to "Draft" Standard. Ross. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sun Feb 8 13:20:37 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA27494 for ; Sun, 8 Feb 2004 13:20:37 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AptXO-0000RW-HB for avt-archive@odin.ietf.org; Sun, 08 Feb 2004 13:20:10 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i18IKAbA001663 for avt-archive@odin.ietf.org; Sun, 8 Feb 2004 13:20:10 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AptXH-0000Nm-Qv; Sun, 08 Feb 2004 13:20:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AptWk-0000MZ-DY for avt@optimus.ietf.org; Sun, 08 Feb 2004 13:19:30 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA27443 for ; Sun, 8 Feb 2004 13:19:26 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AptWi-0005LJ-00 for avt@ietf.org; Sun, 08 Feb 2004 13:19:28 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AptVu-0005H1-00 for avt@ietf.org; Sun, 08 Feb 2004 13:18:39 -0500 Received: from dundee.dcs.gla.ac.uk ([130.209.242.163]) by ietf-mx with esmtp (Exim 4.12) id 1AptVC-000590-00 for avt@ietf.org; Sun, 08 Feb 2004 13:17:54 -0500 Received: from csperkins-dsl.demon.co.uk ([80.176.225.173]:61833 helo=mangole.dcs.gla.ac.uk) by dundee.dcs.gla.ac.uk with asmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.04) id 1AptUh-0004Qd-00 for avt@ietf.org; Sun, 08 Feb 2004 18:17:24 +0000 Date: Sun, 8 Feb 2004 18:17:49 +0000 From: Colin Perkins To: avt@ietf.org Message-Id: <20040208181749.06fa4d2f.csp@csperkins.org> Organization: http://csperkins.org/ X-Mailer: Sylpheed version 0.9.9 (GTK+ 1.2.10; i386-portbld-freebsd4.9) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] IPR claims on RFC 2733 and draft-ietf-avt-ulp-08.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Folks, It has recently been brought to the attention of the working group chairs that Lucent Technologies may have Intellectual Property Rights related to the following IETF documents: (1) RFC 2733, "An RTP Payload Format for Generic Forward Error Correction" (http://www.ietf.org/rfc/rfc2733.txt) (2) draft-ietf-avt-ulp, "An RTP Payload Format for Generic FEC" (http://www.ietf.org/internet-drafts/draft-ietf-avt-ulp-08.txt) As per RFC 2026, the IETF Executive Director has requested clarification on the licensing of that IPR. We will inform the working group of any update, and will post any IPR notice on http://www.ietf.org/ipr.html Colin _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sun Feb 8 20:16:38 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id UAA10634 for ; Sun, 8 Feb 2004 20:16:38 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aq01y-0004z1-1W for avt-archive@odin.ietf.org; Sun, 08 Feb 2004 20:16:10 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i191G9A8019106 for avt-archive@odin.ietf.org; Sun, 8 Feb 2004 20:16:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aq01p-0004xN-U0; Sun, 08 Feb 2004 20:16:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aq01W-0004t8-Bt for avt@optimus.ietf.org; Sun, 08 Feb 2004 20:15:42 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id UAA10597 for ; Sun, 8 Feb 2004 20:15:40 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aq01U-00056B-00 for avt@ietf.org; Sun, 08 Feb 2004 20:15:40 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Aq00f-00052B-00 for avt@ietf.org; Sun, 08 Feb 2004 20:14:50 -0500 Received: from porter.east.isi.edu ([65.114.168.19]) by ietf-mx with esmtp (Exim 4.12) id 1Aq00A-0004xH-00 for avt@ietf.org; Sun, 08 Feb 2004 20:14:18 -0500 Received: from isi.edu (java.east.isi.edu [65.114.168.149]) by porter.east.isi.edu (8.12.8/8.12.8) with ESMTP id i191EIwN000171 for ; Sun, 8 Feb 2004 20:14:18 -0500 (EST) Date: Sun, 8 Feb 2004 20:14:21 -0500 Mime-Version: 1.0 (Apple Message framework v552) Content-Type: text/plain; charset=US-ASCII; format=flowed From: Ladan Gharai To: avt@ietf.org Content-Transfer-Encoding: 7bit Message-Id: <4A55F4D4-5A9D-11D8-89ED-000A95C47376@isi.edu> X-Mailer: Apple Mail (2.552) X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] New Draft: RTP Profile for TCP Friendly Rate Control Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Dear AVT'ers: I have just submitted a new draft draft-gharai-avt-tfrc-profile-00.txt to the Internet Drafts editor. The draft is also available on line at http://www.east.isi.edu/projects/MACC/tfrc-profile.txt This is a preliminary draft for a RTP profile for TFRC, "RTP/AVPCC". Please read and comment on the draft, in particular on the following two items: (I) A TFRC receiver depends on receiving estimates of the current RTT and the send time of each RTP packet, in order to compute its loss event rate. A simplistic approach to providing this information to the receiver is to add fixed fields to the RTP data header. This approach has a number of draw backs: (1) current implementations may not be able to parse such packets; (2) additional overhead of 8 octets in each data packet. Ideally, a TFRC receiver would be able to make do with the standard RTP time stamp (which denotes sampling or presentation time) - and would be able to compute the RTT itself (with the added bonus of also providing it to the TFRC sender). This raises two questions: (1) does the RTP time stamp suffice for loss event calculations? and (2) is it possible to have the receiver compute RTTs? (II) A TFRC sender requires feedback at least once per RTT. Depending on the data rate of a flow and the RTT, this TFRC requirement may result in violation of RTCPs minimum interval and bandwidth restrictions/recommendations. According to RFC3550 a profile MAY specify control traffic bandwidth as a separate session parameter. Is there a similar provision for profiles where the scaled minimum RTCP interval does not suffice? (i.e. where does the profile state that it cannot abide by the recommended minimum RTCP interval?) Ladan Gharai http://www.east.isi.edu/~ladan _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 9 07:33:43 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA15426 for ; Mon, 9 Feb 2004 07:33:43 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqAbC-00030M-QN for avt-archive@odin.ietf.org; Mon, 09 Feb 2004 07:33:14 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i19CXEi7011549 for avt-archive@odin.ietf.org; Mon, 9 Feb 2004 07:33:14 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqAaz-0002yl-9N; Mon, 09 Feb 2004 07:33:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqAa1-0002x3-MT for avt@optimus.ietf.org; Mon, 09 Feb 2004 07:32:01 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA15382 for ; Mon, 9 Feb 2004 07:32:00 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqAa1-000779-00 for avt@ietf.org; Mon, 09 Feb 2004 07:32:01 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqAZ6-00072N-00 for avt@ietf.org; Mon, 09 Feb 2004 07:31:04 -0500 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47]) by ietf-mx with esmtp (Exim 4.12) id 1AqAYE-0006xo-00 for avt@ietf.org; Mon, 09 Feb 2004 07:30:10 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by penguin-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i19CU8YG023978 for ; Mon, 9 Feb 2004 13:30:08 +0100 (MET) Received: from esealnt613.al.sw.ericsson.se ([153.88.254.125]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Mon, 9 Feb 2004 13:30:08 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt613.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 1LJTFHKN; Mon, 9 Feb 2004 13:30:08 +0100 Message-ID: <40277CD1.7030602@ericsson.com> Date: Mon, 09 Feb 2004 13:28:01 +0100 X-Sybari-Trust: 1a6103c8 6b512624 7e80e808 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Tom Taylor CC: avt@ietf.org Subject: Re: [AVT] The RTP payload format for multichannel codecs's signalling problem References: b23cbb51 6b512624 6c3547e6 00000138 <40228CEB.3010508@nortelnetworks.com> In-Reply-To: <40228CEB.3010508@nortelnetworks.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 09 Feb 2004 12:30:08.0392 (UTC) FILETIME=[7425D880:01C3EF08] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi Tom, The problem you describe has what I understand solely to do with what you use a established media stream. However the problem I discuss has to do more directly with the codecs capabilities. If a encoder has stereo and mono capabilities and can switch between them, what is necessary to signal. For my problem there are certain configuration information that needs to be distributed outside of the encoder to decoder chain, this primarily being the receivers playback facilities, so that they are capable of handling both outputs from the decoder. So I don't think the problems are that similar. My problem is in direct relation to properties of the codec, while your problem is in relation the usage. Cheers Magnus Tom Taylor wrote: >We have a similar problem with distinguishing between audio, voice-band >data (high >speed and low speed), voice-band text, and voice-band FAX. Each of >these requires >a different combination of treatments in terms of echo cancellor >operation, >silence suppression, and jitter buffer operation. > > > Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 9 08:43:35 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id IAA18282 for ; Mon, 9 Feb 2004 08:43:34 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqBgo-0005zL-Pf for avt-archive@odin.ietf.org; Mon, 09 Feb 2004 08:43:06 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i19Dh6VG023019 for avt-archive@odin.ietf.org; Mon, 9 Feb 2004 08:43:06 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqBgi-0005yI-Pt; Mon, 09 Feb 2004 08:43:00 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqBfm-0005xi-4c for avt@optimus.ietf.org; Mon, 09 Feb 2004 08:42:02 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id IAA18241 for ; Mon, 9 Feb 2004 08:41:59 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqBfk-0006S7-00 for avt@ietf.org; Mon, 09 Feb 2004 08:42:00 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqBen-0006OD-00 for avt@ietf.org; Mon, 09 Feb 2004 08:41:02 -0500 Received: from almso1.att.com ([192.128.167.69] helo=almso1.proxy.att.com) by ietf-mx with esmtp (Exim 4.12) id 1AqBe1-0006GJ-00 for avt@ietf.org; Mon, 09 Feb 2004 08:40:13 -0500 Received: from attrh5i.attrh.att.com ([135.38.62.12]) by almso1.proxy.att.com (AT&T IPNS/MSO-5.0) with ESMTP id i19DBogA008387 for ; Mon, 9 Feb 2004 08:39:42 -0500 Received: from KCCLUST06EVS1.ugd.att.com (135.38.164.88) by attrh5i.attrh.att.com (6.5.032) id 401694950074DE94; Mon, 9 Feb 2004 08:39:14 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Date: Mon, 9 Feb 2004 07:39:42 -0600 Message-ID: <9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> Thread-Topic: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt Thread-Index: AcPsMP0ASq32Gxj0RSGdMQKGw6Kg2AC3u+fw From: "Ash, Gerald R (Jerry), ALABS" To: , Cc: "Ash, Gerald R (Jerry), ALABS" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Subject: [AVT] RE: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable All, Please review and comment on 'Protocol Extensions for ECRTP over MPLS' = http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protoco= l-00.txt. The protocol extensions enable the use of MPLS to route = enhanced compressed RTP (ECRTP) compressed packets over an MPLS LSP = without compression/decompression cycles at each router. The proposed extensions are based on the requirements documented in = 'Requirements for ECRTP over MPLS' = http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-reqs-01= .txt. Thanks, Jerry -----Original Message----- From: Internet-Drafts@ietf.org [mailto:Internet-Drafts@ietf.org] Sent: Thursday, February 05, 2004 3:43 PM Subject: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt A New Internet-Draft is available from the on-line Internet-Drafts = directories. Title : Protocol Extensions for ECRTP over MPLS Author(s) : J. Ash Filename : draft-ash-avt-ecrtp-over-mpls-protocol-00.txt Pages : 0 Date : 2004-2-5 =09 VoIP typically uses the encapsulation voice/RTP/UDP/IP. When MPLS labels = are added, this becomes voice/RTP/UDP/IP/MPLS-labels. For an MPLS VPN,=20 the packet header is at least 48 bytes, while the voice payload is often = no more than 30 bytes, for example. VoIP header compression can=20 significantly reduce the VoIP overhead through various compression=20 mechanisms, such as enhanced compressed RTP (ECRTP). We consider using=20 MPLS to route ECRTP compressed packets over an MPLS LSP without=20 compression/decompression cycles at each router. Such an ECRTP over MPLS = capability can increase the bandwidth efficiency as well as processing=20 scalability of the maximum number of simultaneous VoIP flows that use=20 header compression at each router. In this draft we propose to use=20 RSVP-TE extensions to signal the header compression context and other=20 control messages between the ingress and egress LSR. We re-use the=20 methods in ECRTP to determine the context. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protoco= l-00.txt. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 9 11:19:35 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA25707 for ; Mon, 9 Feb 2004 11:19:35 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqE7n-0001lx-V5 for avt-archive@odin.ietf.org; Mon, 09 Feb 2004 11:19:08 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i19GJ7qI006771 for avt-archive@odin.ietf.org; Mon, 9 Feb 2004 11:19:07 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqE7g-0001h5-SW; Mon, 09 Feb 2004 11:19:00 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqE6r-0001cC-Ne for avt@optimus.ietf.org; Mon, 09 Feb 2004 11:18:09 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA25667 for ; Mon, 9 Feb 2004 11:18:07 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqE6q-0004WQ-00 for avt@ietf.org; Mon, 09 Feb 2004 11:18:08 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqE67-0004Rn-00 for avt@ietf.org; Mon, 09 Feb 2004 11:17:24 -0500 Received: from web9803.mail.yahoo.com ([216.136.129.213]) by ietf-mx with smtp (Exim 4.12) id 1AqE5H-0004Ln-00 for avt@ietf.org; Mon, 09 Feb 2004 11:16:31 -0500 Message-ID: <20040209161630.67377.qmail@web9803.mail.yahoo.com> Received: from [147.102.220.53] by web9803.mail.yahoo.com via HTTP; Mon, 09 Feb 2004 08:16:30 PST Date: Mon, 9 Feb 2004 08:16:30 -0800 (PST) From: Papagianni Chrisa To: avt@ietf.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=1.0 required=5.0 tests=AWL,FROM_ENDS_IN_NUMS autolearn=no version=2.60 Subject: [AVT] use of rtcp in third party monitoring Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , hello all, I am doing a research on the use of rtcp protocol on monitoring (third party) the status of a network. The two values I am specially interested in is packet loss rate and jitter in msec.I order to get the packet loss rate mentioned in rfc 3550 (if I have understant it correctly) loss rate per sec= (fraction over the interval) /(ntp(i+1)-ntp(i)) where ntp=ntp timestamp and fraction over the interval=(cum(i+1)-cum(i)) / (elsn(i+1)-elsn(i)) where cum=cummulative number of packets lost elsn=extended last sequence number a) in order to get the ntp timetsamps, if I only track RR packets, should I use the LSR field and how do I convert it in sec? Is LSR expressed in units of 1/65536 sec as DLSR? b)instead of using ( fraction over the interval=(cum(i+1)-cum(i)) / (elsn(i+1)-elsn(i)) ) can I use the Field FRACTION LOST (and the ntp timestamps will be consequtive) ? c)In order to estimate the value of jitter in msec, in the rfc it says that the intearrival jitter is measured in timestamp units, by timestamp you mean the rtp timsetamp which is definitely dependent on the sampling frequency? d)To estimate the interarrival jitter in msec should I multiply jitter*(rtp_timestamp) ? thanks in advance regards __________________________________ Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online. http://taxes.yahoo.com/filing.html _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 9 16:02:42 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id QAA11250 for ; Mon, 9 Feb 2004 16:02:42 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqIXn-0000UZ-0l for avt-archive@odin.ietf.org; Mon, 09 Feb 2004 16:02:15 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i19L2Ecb001891 for avt-archive@odin.ietf.org; Mon, 9 Feb 2004 16:02:15 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqIXZ-0000TH-Gc; Mon, 09 Feb 2004 16:02:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqIWj-0000SH-R9 for avt@optimus.ietf.org; Mon, 09 Feb 2004 16:01:09 -0500 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id QAA11130; Mon, 9 Feb 2004 16:01:06 -0500 (EST) Message-Id: <200402092101.QAA11130@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: IETF-Announce: ; Cc: avt@ietf.org From: Internet-Drafts@ietf.org Reply-to: Internet-Drafts@ietf.org Date: Mon, 09 Feb 2004 16:01:06 -0500 Subject: [AVT] I-D ACTION:draft-ietf-avt-rtp-dsr-codecs-00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Audio/Video Transport Working Group of the IETF. Title : RTP Payload Formats for European Telecommunications Standardsv Institute (ETSI) European Standard ES 202 050, ES 202 211, and ES 202 212 Distributed Speech Recognition Encoding Author(s) : Q. Xie Filename : draft-ietf-avt-rtp-dsr-codecs-00.txt Pages : 21 Date : 2004-2-9 This document specifies RTP payload formats for encapsulating ETSI Standard ES 202 050 DSR Advanced Front-end (AFE), ES 202 211 DSR Extended Front-end (XFE), and ES 202 212 DSR Extended Advanced Front-end (XAFE) signal processing feature streams for distributed speech recognition (DSR) systems. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-avt-rtp-dsr-codecs-00.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-avt-rtp-dsr-codecs-00.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-avt-rtp-dsr-codecs-00.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2004-2-9160342.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-avt-rtp-dsr-codecs-00.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-avt-rtp-dsr-codecs-00.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2004-2-9160342.I-D@ietf.org> --OtherAccess-- --NextPart-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 9 23:59:36 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id XAA16280 for ; Mon, 9 Feb 2004 23:59:36 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqPzJ-000272-3P for avt-archive@odin.ietf.org; Mon, 09 Feb 2004 23:59:09 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1A4x9fn008116 for avt-archive@odin.ietf.org; Mon, 9 Feb 2004 23:59:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqPzB-00026A-6i; Mon, 09 Feb 2004 23:59:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqPyr-00025h-F5 for avt@optimus.ietf.org; Mon, 09 Feb 2004 23:58:41 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id XAA16264 for ; Mon, 9 Feb 2004 23:58:38 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqPyp-0004dS-00 for avt@ietf.org; Mon, 09 Feb 2004 23:58:39 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqPxw-0004YZ-00 for avt@ietf.org; Mon, 09 Feb 2004 23:57:45 -0500 Received: from motgate6.mot.com ([144.189.100.106]) by ietf-mx with esmtp (Exim 4.12) id 1AqPxQ-0004Sh-00 for avt@ietf.org; Mon, 09 Feb 2004 23:57:12 -0500 Received: from az33exr01.mot.com (az33exr01.mot.com [10.64.251.231]) by motgate6.mot.com (Motorola/Motgate6) with ESMTP id i1A4tbIg019489 for ; Mon, 9 Feb 2004 21:55:41 -0700 (MST) Received: from motorola.com ([163.14.20.5]) by az33exr01.mot.com (Motorola/az33exr01) with ESMTP id i1A4rWWJ016155; Mon, 9 Feb 2004 22:53:34 -0600 Message-ID: <40286433.5050907@motorola.com> Date: Tue, 10 Feb 2004 12:55:15 +0800 From: Qiaobing Xie User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 X-Accept-Language: en-us, en MIME-Version: 1.0 To: avt@ietf.org Subject: Re: [AVT] I-D ACTION:draft-ietf-avt-rtp-dsr-codecs-00.txt References: <200402092101.QAA11130@ietf.org> In-Reply-To: <200402092101.QAA11130@ietf.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.2 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, all, This draft is the result of merging three previously separate DSR drafts, per a WG suggestion made at the last IETF in Minneapolis. There is one tech change made in this revision to the ES 202 050 payload format - in order to be consistent with other DSR RTP formats and better align with ETSI definition, the position of the 4 bit FP CRC and 4 bit padding at the end of a FP are exchanged and are now explicitly drawn in the draft to prevent any ambiguity. Your review and comments are welcome. regards, -Qiaobing Internet-Drafts@ietf.org wrote: > A New Internet-Draft is available from the on-line Internet-Drafts directories. > This draft is a work item of the Audio/Video Transport Working Group of the IETF. > > Title : RTP Payload Formats for European Telecommunications > Standardsv Institute (ETSI) European Standard ES 202 > 050, ES 202 211, and ES 202 212 Distributed Speech > Recognition Encoding > Author(s) : Q. Xie > Filename : draft-ietf-avt-rtp-dsr-codecs-00.txt > Pages : 21 > Date : 2004-2-9 > > This document specifies RTP payload formats for encapsulating ETSI > Standard ES 202 050 DSR Advanced Front-end (AFE), ES 202 211 DSR > Extended Front-end (XFE), and ES 202 212 DSR Extended Advanced > Front-end (XAFE) signal processing feature streams for distributed > speech recognition (DSR) systems. > > A URL for this Internet-Draft is: > http://www.ietf.org/internet-drafts/draft-ietf-avt-rtp-dsr-codecs-00.txt > > To remove yourself from the IETF Announcement list, send a message to > ietf-announce-request with the word unsubscribe in the body of the message. > > Internet-Drafts are also available by anonymous FTP. Login with the username > "anonymous" and a password of your e-mail address. After logging in, > type "cd internet-drafts" and then > "get draft-ietf-avt-rtp-dsr-codecs-00.txt". > > A list of Internet-Drafts directories can be found in > http://www.ietf.org/shadow.html > or ftp://ftp.ietf.org/ietf/1shadow-sites.txt > > > Internet-Drafts can also be obtained by e-mail. > > Send a message to: > mailserv@ietf.org. > In the body type: > "FILE /internet-drafts/draft-ietf-avt-rtp-dsr-codecs-00.txt". > > NOTE: The mail server at ietf.org can return the document in > MIME-encoded form by using the "mpack" utility. To use this > feature, insert the command "ENCODING mime" before the "FILE" > command. To decode the response(s), you will need "munpack" or > a MIME-compliant mail reader. Different MIME-compliant mail readers > exhibit different behavior, especially when dealing with > "multipart" MIME messages (i.e. documents which have been split > up into multiple messages), so check your local documentation on > how to manipulate these messages. > > > Below is the data which will enable a MIME compliant mail reader > implementation to automatically retrieve the ASCII version of the > Internet-Draft. > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 03:08:59 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA05138 for ; Tue, 10 Feb 2004 03:08:59 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqSwO-0005Fa-9V for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 03:08:30 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1A88IPH020075 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 03:08:18 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqSwA-0005Am-1j; Tue, 10 Feb 2004 03:08:06 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqEN1-0003AF-RH for avt@optimus.ietf.org; Mon, 09 Feb 2004 11:34:51 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA26397 for ; Mon, 9 Feb 2004 11:34:48 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqEN0-0006Kg-00 for avt@ietf.org; Mon, 09 Feb 2004 11:34:50 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqEKW-0005uJ-00 for avt@ietf.org; Mon, 09 Feb 2004 11:32:17 -0500 Received: from workhorse.fictitious.org ([209.150.1.230]) by ietf-mx with esmtp (Exim 4.12) id 1AqEJ9-0005fU-00 for avt@ietf.org; Mon, 09 Feb 2004 11:30:51 -0500 Received: from workhorse.fictitious.org (localhost.fictitious.org [127.0.0.1]) by workhorse.fictitious.org (8.12.9p2/8.12.8) with ESMTP id i19GSwRY084489; Mon, 9 Feb 2004 11:28:59 -0500 (EST) (envelope-from curtis@workhorse.fictitious.org) Message-Id: <200402091628.i19GSwRY084489@workhorse.fictitious.org> To: "Ash, Gerald R (Jerry), ALABS" cc: avt@ietf.org Reply-To: curtis@fictitious.org In-reply-to: Your message of "Mon, 09 Feb 2004 07:39:42 CST." <9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> Date: Mon, 09 Feb 2004 11:28:58 -0500 From: Curtis Villamizar X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Subject: [AVT] Re: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , In message <9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> , "Ash, Gerald R (Jerry), ALABS" writes: > All, > > Please review and comment on 'Protocol Extensions for ECRTP over MPLS' http:/ > /www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protocol-00.txt. > The protocol extensions enable the use of MPLS to route enhanced compressed > RTP (ECRTP) compressed packets over an MPLS LSP without compression/decompres > sion cycles at each router. > > The proposed extensions are based on the requirements documented in 'Requirem > ents for ECRTP over MPLS' http://www.ietf.org/internet-drafts/draft-ash-avt-e > crtp-over-mpls-reqs-01.txt. > > Thanks, > Jerry > > > Title : Protocol Extensions for ECRTP over MPLS > Author(s) : J. Ash > Filename : draft-ash-avt-ecrtp-over-mpls-protocol-00.txt > Pages : 0 > Date : 2004-2-5 Jerry, This looks to be a very good direction to go in. I've dropped MPLS from the Cc and put MPLS on the bcc so people know the discussion is on the AVT mailing list only. In your encapsulations you should make sure to avoid any values in the first byte that could be mistaken as IPv4 or IPv6 or any of the encapsulations being worked on by those working on VPN and PW. See "The PWE3 Control Word", Jonathan Stein, 22-Oct-02, draft-stein-pwe3-controlword-00.txt, for some early discussion on that. Note though that "Payload Type" is something that many providers require so that multipath can be used on IP traffic which consitutes the majority of traffic yet reordering is avoided for traffic which cannot be split based on what appears to be an IP header and the IP src/dst pair. It might be best to reserve a single fixed first byte for the "Packet Type" (and I suggest you make up a name for this shim such as SCID_Packet_Type) and use the second byte for the packet types that you have defined. Just as you have to get numbers for SCID_Request Object and Header_Compression_Reply Object from IANA, you'll have to coordinate with others over this number space, though it is less clear if IANA is the authority on this quite yet. Curtis _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 03:09:07 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA05155 for ; Tue, 10 Feb 2004 03:09:07 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqSwO-0005Fb-B9 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 03:08:39 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1A88IeM020077 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 03:08:18 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqSwC-0005BA-6J; Tue, 10 Feb 2004 03:08:08 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqStt-0004vQ-5T for avt@optimus.ietf.org; Tue, 10 Feb 2004 03:05:51 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA04974 for ; Tue, 10 Feb 2004 03:05:42 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqStp-0005yK-00 for avt@ietf.org; Tue, 10 Feb 2004 03:05:41 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqSsu-0005rH-00 for avt@ietf.org; Tue, 10 Feb 2004 03:04:46 -0500 Received: from mail0.u-aizu.ac.jp ([163.143.1.43]) by ietf-mx with esmtp (Exim 4.12) id 1AqSs4-0005lk-00; Tue, 10 Feb 2004 03:03:52 -0500 Received: from procsv3.u-aizu.ac.jp (localhost [127.0.0.1]) by mail0.u-aizu.ac.jp (8.11.6+3.4W/8.11.6/u-aizu internet-gw) with ESMTP id i1A83Ys15620; Tue, 10 Feb 2004 17:03:34 +0900 (JST) Received: from smldoc05 (smldoc05 [163.143.134.132]) by procsv3.u-aizu.ac.jp (8.9.3p2+3.1W/3.7Wistcmx+kanji) with SMTP id RAA29185; Tue, 10 Feb 2004 17:03:33 +0900 (JST) Message-ID: <00be01c3efac$6134ced0$84868fa3@smldoc05> From: "hui wang" To: , , , , , , , , , , , , , , , , , , , , , , , , , Cc: "Zhiyong PENG" , "hui wang" Date: Tue, 10 Feb 2004 17:03:33 +0900 Organization: The University of Aizu, Japan MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00BB_01C3EFF7.D0F8C230" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, LINES_OF_YELLING,LINES_OF_YELLING_2 autolearn=no version=2.60 Subject: [AVT] CFP of CIT2004 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. ------=_NextPart_000_00BB_01C3EFF7.D0F8C230 Content-Type: text/plain; charset="windows-1250" Content-Transfer-Encoding: quoted-printable With our apologize for any duplicates; -------------------- CIT2004 CALL FOR PAPER ----------------------- The 2004 International Conference on Computer and Information Technology = (CIT2004) Wuhan, China, 14-16 September 2004,=20 http://smlsvr01.u-aizu.ac.jp/~cit2004/ CALL FOR PAPERS =20 Information technology has been widely considered as one of the most=20 important emerging technologies for the 21st century, which has been = made=20 great impact on people and society. In the recent years, throughout=20 society, the explosion of computer network and information technology=20 has been changing the way people work and live. This conference serves = as=20 one of the major forums for researchers and practitioners from academia=20 and industry to discuss and exchange ideas and opinions, and envision=20 the future of computer and information technology.=20 In 2004, it will specially focus on graphics, multimedia, web = services,=20 and wireless/mobile/pervasive computing in the related research,=20 development and application fields. Topics of particular interest=20 include, but are not limited to: 1) Graphics and MultimediaGraphics systems,=20 shape abstraction modeling,=20 geometric modeling,=20 rendering algorithms,=20 virtual reality techniques,=20 volume visualization,=20 animation techniques,=20 pattern recognition,=20 image understanding,=20 interactive multimedia systems,=20 networked multimedia,=20 human-computer interaction 2) Web-based Services=20 =20 Web data management,=20 web mining,=20 semantic web,=20 web services performance and modeling,=20 e-learning,=20 XML structures,=20 grid-based services,=20 grid middleware and tools,=20 distributed algorithms,=20 peer-to-peer networks,=20 next generation internet technologies =20 3) wireless/mobile/pervasive Computing Wireless computing systems,=20 ad hoc networking service discovery,=20 wireless-phone computing,=20 mobile communication,=20 portable devices and smart sensors,=20 wearable computers and PDAs,=20 pervasive system concepts and architectures,=20 pervasive applications,=20 infrastructure and networks of ubiquitous computing =20 4) Applications=20 Intelligent health care system,=20 information retrieval,=20 knowledge management,=20 information design,=20 medical information systems,=20 database and application systems,=20 software agents,=20 software engineering,=20 natural language processing =20 IMPORTANT DATES Paper submission due: 20 April 2004 Acceptance notification: 5 June 2004 Camera-ready due: 25 June 2004 Author registration: 20 July 2004 PUBLICATIONS =20 The accepted papers have to be presented orally within 25 minutes=20 included discussion at the conference and will be published in=20 proceedings of CIT2004 by IEEE Computer Society. The selected best=20 papers will be published in special issues of International Journals. BEST PAPER AWARDS The program committee will select one winner for the Best Paper = Award=20 (all regular papers are eligible) and one winner for the Best Student = Paper=20 Award (only the regular papers whose first author is a full-time student = are eligible). Each winner will be presented with a certification and=20 a cheque. SUBMISSION GUIDELINESSubmissions should include an abstract,=20 5-7 keywords, the e-mail address of the corresponding author, and must = not=20 exceed 8 pages (IEEE format), including tables and figures, with PDF,=20 PostScript, or MS Word format. Submission of a paper should be regarded as an undertaking that, = should=20 the paper be accepted, at least one of the authors will attend the=20 conference to present the work. Submissions to CIT2004 will be conducted = electronically on the CIT2004 website. Authors unable to access e-mail=20 may send 4 hard copies of their papers to: PC Co-Chair, Dr. Hui Wang School of Computer Science and Engineering,=20 University of Aizu,Ikki-machi, Aizu-Wakamatsu City, Fukushima 965-8580, Japan =20 Email: hwang@u-aizu.ac.jp=20 Tel: +81-242-37-2666 Fax: +81-242-37-2728 CONFERENCE WEB SITE: =20 http://smlsvr01.u-aizu.ac.jp/~cit2004/ =20 HONORARY GENERAL CHAIRS Jingnan Liu, Wuhan University, China Tetsuhiko Ikegami, University of Aizu, Japan GENERAL CHAIRS Daming Wei, University of Aizu, Japan Yanxiang He, Wuhan University, China ADVISORY COMMITTEE =20 Chris Constantinou, Stanford University, USA Chin-Chen Chang, National Chung Cheng University, Taiwan Huowang Chen, Changsha Institute of Technology, China Keqing He, Wuhan University, China Lishan Kang, Wuhan University, China=20 Kae Dal Kwack, Hanyang University, Korea Deyi Li, Institute of China Electronic System Engineering, China Sanli Li, Tsinghua University, China Bole Shi, Fudan University, China Gengfeng Wu, Shanghai University, China Guoqing Wu, Wuhan University, China Fumio Okuyama, Suzuka University of Mecial Science, Japan Yoneo Yano, Tokushima University, Japan=20 =20 PROGRAM COMMITTEE CHAIRS =20 Hui Wang, University of Aizu, Japan Zhiyong Peng, Wuhan University, China=20 Atsushi Kara, University of Aizu, Japan PUBLICITY CHAIRS Qun Jin, Waseda University, Japan Qing Li, City University of Hong Kong, China Yanchun Zhang, Victoria University, Australia LOCAL ORGANISATION COMMITTEE =20 Shi Ying, Wuhan University, China Xusheng Yang, Wuhan University, China Huaibei Zhou, Wuhan University, China Jiaheng Cao, Wuhan University, China Xuhui Li, Wuhan University, China PROGRAM COMMITTEE Saeid Belkasim, Georgia State University, USA = =20 Subhash Bhalla, University of Aizu, Japan = =20 Wenxi Chen, University of Aizu, Japan = =20 Zixue Cheng, University of Aizu, Japan = =20 Michael Cohen, University of Aizu, Japan = =20 Brian d'Auriol, University of Texas at EP, USA = =20 Youdong Ding, Shanghai University, China = =20 Zuxiang Fang, Fudan University, China = =20 Jihong Guan, Wuhan University, China = =20 Guoqing Gu, East China Normal University, China = =20 Ning Gu, Fudan University, China = =20 Minyi Guo, University of Aizu, Japan = =20 Khairuddin Hashim, Tun Abdul Razak University, Malaysia = =20 Toshihiro Hayashi, Saga University, Japan = =20 Aiguo He, University of Aizu, Japan = =20 Tingting He, Huazhong Normal University, China = =20 Susantha Herath, St. Cloud State University, USA = =20 Hai Jin, Huazhong University of Science and Technology, China = =20 Hua Hu, Hangzhou Institute of Commerce, China = =20 Jicheng Hu, Wuhan University, China = =20 Xiaohua Hu, Drexel University, USA = =20 Jie Huang, University of Aizu, Japan = =20 Rajgopal Kannan, Louisiana State University, USA = =20 Keqin Li, State University of New York, USA = =20 Minglu Li, Shanghai Jiao Tong University, China = =20 Vitaliy Kluev, University of Aizu, Japan = =20 Yiwen Liang, Wuhan University, China = =20 Yong Liu, University of Aizu, Japan = =20 Zhen Liu, Nagasaki Institute of Applied Science, Japan = =20 Jianhua Ma, Hosei University, Japan = =20 William L. Martens, McGill University, Canada = =20 Geyong Min, University of Bradford, UK = =20 Nikolay N. Mirenkov, University of Aizu, Japan = =20 Mukesh Mohania, IBM India Res Lab, India = =20 Shoji Nishimura, Waseda University, Japan = =20 Fumio Okuyama, Suzuka University of Medical Science, Japan = =20 Incheon Paik, University of Aizu, Japan = =20 Yi Pan, Georgia State University , USA = =20 Lim Ee Peng, Nanyang Technological University , Singapore = =20 Sibabrata Ray, University of Alabama, USA = =20 Kazuyuki Saito, University of Aizu, Japan = =20 Stanislav G. Sedukhin, University of Aizu, Japan = =20 Timothy K. Shih, Tamkang University, Taiwan = =20 Jung-Pil Shin, University of Aizu, Japan = =20 Masahide Sugiyama, University of Aizu, Japan = =20 Xinmin Tian, Intel Corp., USA = =20 Jari Veijalainen, University of Jyvaskyla, Finland = =20 Lina Wang, Wuhan University, China =20 Ying-Hong Wang, Tamkang University, Taiwan = =20 Werner Winiwarter, University of Vienna, Austria = =20 Bing Wu, Dublin Institute Technology, Ireland = =20 Yang Xiao, University of Memphis, USA = =20 Laurence T. Yang, St. Francis Xavier University , Canada = =20 Jeffrey Xu Yu, Chinese University of Hong Kong, China = =20 Qiangfu Zhao, University of Aizu, Japan = =20 Liang Zhang, Fudan University, China = =20 Shensheng Zhang, Shanghai Jiao Tong University, China = =20 Shuigeng Zhou, Fudan University, China = =20 Xiaofang Zhou, University of Queensland, Australia = =20 -------------------- CIT2004 THE END ----------------------- =20 ------=_NextPart_000_00BB_01C3EFF7.D0F8C230 Content-Type: text/html; charset="windows-1250" Content-Transfer-Encoding: quoted-printable
 With our = apologize for=20 any duplicates;

--------------------  CIT2004  = CALL FOR=20 PAPER   -----------------------
 
The 2004 International Conference on Computer and = Information=20 Technology=20
           &nb= sp;           &nbs= p;      =20 (CIT2004)
          =        =20 Wuhan, China, 14-16 September 2004,
 
          &nbs= p;      =20 http://smlsvr01.u-aizu.ac= .jp/~cit2004/
 

CALL FOR PAPERS         =
 
   Information technology has been widely considered as = one of=20 the most
important emerging technologies for the 21st century, which = has=20 been made
great impact on people and society. In the recent years,=20 throughout
society, the explosion of computer network and = information=20 technology
has been changing the way people work and live. This = conference=20 serves as
one of the major forums for researchers and practitioners = from=20 academia
and industry to discuss and exchange ideas and opinions, = and=20 envision
the future of computer and information technology.
 
   In 2004, it will specially focus on graphics, = multimedia, web=20 services,
and wireless/mobile/pervasive computing in the related = research,=20
development and application fields. Topics of particular interest=20
include, but are not limited to:
 
1) Graphics and MultimediaGraphics systems,
 
 shape abstraction modeling,
 geometric modeling,=20
 rendering algorithms,
 virtual reality techniques,=20
 volume visualization,
 animation techniques,=20
 pattern recognition,
 image understanding,=20
 interactive multimedia systems,
 networked = multimedia,=20
 human-computer interaction
 
2) Web-based Services
 
 Web data management,=20
 web mining,
 semantic web,
 web services = performance=20 and modeling,
 e-learning,
 XML structures,=20
 grid-based services,
 grid middleware and tools,=20
 distributed algorithms,
 peer-to-peer networks,=20
 next generation internet technologies
 
3)=20 wireless/mobile/pervasive Computing
 
 Wireless computing systems,
 ad hoc networking = service=20 discovery,
 wireless-phone computing,
 mobile = communication,=20
 portable devices and smart sensors,
 wearable = computers and=20 PDAs,
 pervasive system concepts and architectures, =
 pervasive=20 applications,
 infrastructure and networks of ubiquitous=20 computing
 
4) Applications
 
 Intelligent health care system,
 information = retrieval,=20
 knowledge management,
 information design, =
 medical=20 information systems,
 database and application systems,=20
 software agents,
 software engineering, =
 natural=20 language processing
 
 
IMPORTANT DATES
 
 Paper submission = due:        =20 20 April 2004
 Acceptance = notification:      5=20 June 2004
 Camera-ready=20 due:           &nb= sp; 25=20 June 2004
 Author=20 registration:          20 = July=20 2004
 
PUBLICATIONS       
 
    The accepted papers have to be presented orally = within=20 25 minutes
included discussion at the conference and will be = published in=20
proceedings of CIT2004 by IEEE Computer Society. The selected best=20
papers will be published in special issues of International = Journals.
 
BEST PAPER AWARDS
 
    The program committee will select one winner for = the=20 Best Paper Award
(all regular papers are eligible) and one winner = for the=20 Best Student Paper
Award (only the regular papers whose first author = is a=20 full-time student
are eligible). Each winner will be presented with = a=20 certification and
a cheque. SUBMISSION GUIDELINESSubmissions = should=20 include an abstract,
5-7 keywords, the e-mail address of the = corresponding=20 author, and must not
exceed 8 pages (IEEE format), including tables = and=20 figures, with PDF,
PostScript, or MS Word format.
 
    Submission of a paper should be regarded as an=20 undertaking that, should
the paper be accepted, at least one of the = authors=20 will attend the
conference to present the work. Submissions to = CIT2004 will=20 be conducted
electronically on the CIT2004 website. Authors unable = to access=20 e-mail
may send 4 hard copies of their papers to:
 
 PC Co-Chair, Dr. Hui Wang
 School of Computer Science = and=20 Engineering,
 University of Aizu,Ikki-machi, Aizu-Wakamatsu=20 City,
 Fukushima 965-8580, Japan
 
 Email: hwang@u-aizu.ac.jp
 Tel: = +81-242-37-2666
 Fax: +81-242-37-2728
 
CONFERENCE WEB SITE:        =
 http://smlsvr01.u-aizu.ac= .jp/~cit2004/
 
HONORARY=20 GENERAL CHAIRS
 
 Jingnan Liu, Wuhan University, China
 Tetsuhiko = Ikegami,=20 University of Aizu, Japan
 
GENERAL CHAIRS
 
 Daming Wei, University of Aizu, Japan
 Yanxiang He, = Wuhan=20 University, China
 
ADVISORY COMMITTEE
 
 Chris Constantinou, Stanford=20 University, USA
 Chin-Chen Chang, National Chung Cheng = University,=20 Taiwan
 Huowang Chen, Changsha Institute of Technology,=20 China
 Keqing He, Wuhan University, China
 Lishan Kang, = Wuhan=20 University, China
 Kae Dal Kwack, Hanyang University,=20 Korea
 Deyi Li, Institute of China Electronic System = Engineering,=20 China
 Sanli Li, Tsinghua University, China
 Bole Shi, = Fudan=20 University, China
 Gengfeng Wu, Shanghai University,=20 China
 Guoqing Wu, Wuhan University, China
 Fumio = Okuyama,=20 Suzuka University of Mecial Science, Japan
 Yoneo Yano, = Tokushima=20 University, Japan 
 
PROGRAM COMMITTEE=20 CHAIRS
 
 Hui Wang, University of Aizu, = Japan
 Zhiyong=20 Peng, Wuhan University, China
 Atsushi Kara, University of = Aizu,=20 Japan
 
PUBLICITY CHAIRS
 
 Qun Jin, Waseda University, Japan
 Qing Li, City = University=20 of Hong Kong, China
 Yanchun Zhang, Victoria University, = Australia
 
LOCAL ORGANISATION  COMMITTEE
 
 Shi Ying, = Wuhan=20 University, China
 Xusheng Yang, Wuhan University,=20 China
 Huaibei Zhou, Wuhan University, China
 Jiaheng = Cao, Wuhan=20 University, China
 Xuhui Li, Wuhan University, China
 
PROGRAM COMMITTEE
 
 Saeid Belkasim, Georgia State University,=20 USA           &nbs= p;            = ;    =20
 Subhash Bhalla, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;        =20
 Wenxi Chen, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;           &nbs= p;        =20
 Zixue Cheng, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;           =20
 Michael Cohen, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;         =20
 Brian d'Auriol, University of Texas at EP,=20 USA           &nbs= p;            = ;   =20
 Youdong Ding, Shanghai University,=20 China           &n= bsp;           &nb= sp;         =20
 Zuxiang Fang, Fudan University,=20 China           &n= bsp;           &nb= sp;           &nbs= p;=20
 Jihong Guan, Wuhan University,=20 China           &n= bsp;           &nb= sp;           &nbs= p;=20
 Guoqing Gu, East China Normal University,=20 China           &n= bsp;           &nb= sp;  =20
 Ning Gu, Fudan University,=20 China           &n= bsp;           &nb= sp;           &nbs= p;     =20
 Minyi Guo, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;           &nbs= p; =20
 Khairuddin Hashim, Tun Abdul Razak University,=20 Malaysia           = ;      =20
 Toshihiro Hayashi, Saga University,=20 Japan           &n= bsp;           &nb= sp;        =20
 Aiguo He, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;           &nbs= p;  =20
 Tingting He, Huazhong Normal University,=20 China           &n= bsp;           &nb= sp;   =20
 Susantha Herath, St. Cloud State University,=20 USA           &nbs= p;            = ; =20
 Hai Jin, Huazhong University of Science and Technology,=20 China           &n= bsp;=20
 Hua Hu, Hangzhou Institute of Commerce,=20 China           &n= bsp;           &nb= sp;    =20
 Jicheng Hu, Wuhan University,=20 China           &n= bsp;           &nb= sp;           &nbs= p; =20
 Xiaohua Hu, Drexel University,=20 USA           &nbs= p;            = ;            =    =20
 Jie Huang, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;           &nbs= p; =20
 Rajgopal Kannan, Louisiana State University,=20 USA           &nbs= p;            = ;     =20
 Keqin Li, State University of New York,=20 USA           &nbs= p;            = ;      =20
 Minglu Li, Shanghai Jiao Tong University,=20 China           &n= bsp;           &nb= sp;  =20
 Vitaliy Kluev, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;         =20
 Yiwen Liang, Wuhan University,=20 China           &n= bsp;           &nb= sp;           &nbs= p;=20
 Yong Liu, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;           &nbs= p;  =20
 Zhen Liu, Nagasaki Institute of Applied Science,=20 Japan           &n= bsp;       =20
 Jianhua Ma, Hosei University,=20 Japan           &n= bsp;           &nb= sp;           &nbs= p; =20
 William L. Martens, McGill University,=20 Canada           &= nbsp;           &n= bsp;    =20
 Geyong Min, University of Bradford,=20 UK            = ;            =           =20
 Nikolay N. Mirenkov, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;   =20
 Mukesh Mohania, IBM India Res Lab,=20 India           &n= bsp;           &nb= sp;         =20
 Shoji Nishimura, Waseda University,=20 Japan           &n= bsp;           &nb= sp;       =20
 Fumio Okuyama, Suzuka University of Medical Science,=20 Japan           &n= bsp;           &nb= sp;      =20
 Incheon Paik, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;          =20
 Yi Pan, Georgia State University ,=20 USA           &nbs= p;            = ;           =20
 Lim Ee Peng, Nanyang Technological University ,=20 Singapore          &nbs= p;     =20
 Sibabrata Ray, University  of Alabama,=20 USA           &nbs= p;            = ;       =20
 Kazuyuki Saito, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;        =20
 Stanislav G. Sedukhin, University of Aizu,=20 Japan           &n= bsp;           &nb= sp; =20
 Timothy K. Shih, Tamkang University,=20 Taiwan           &= nbsp;           &n= bsp;     =20
 Jung-Pil Shin, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;         =20
 Masahide Sugiyama, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;     =20
 Xinmin Tian, Intel Corp.,=20 USA           &nbs= p;            = ;            =         =20
 Jari Veijalainen, University of Jyvaskyla,=20 Finland           =            =20
 Lina Wang, Wuhan University,=20 China           &n= bsp;           &nb= sp;       =20
 Ying-Hong Wang, Tamkang University,=20 Taiwan           &= nbsp;           &n= bsp;      =20
 Werner Winiwarter, University of Vienna,=20 Austria           =             &= nbsp;=20
 Bing Wu, Dublin Institute Technology,=20 Ireland           =             &= nbsp;    =20
 Yang Xiao, University  of Memphis,=20 USA           &nbs= p;            = ;           =20
 Laurence T. Yang, St. Francis Xavier University ,=20 Canada           &= nbsp;     =20
 Jeffrey Xu Yu, Chinese University of Hong Kong,=20 China           &n= bsp;       =20
 Qiangfu Zhao, University of Aizu,=20 Japan           &n= bsp;           &nb= sp;          =20
 Liang Zhang, Fudan University,=20 China           &n= bsp;           &nb= sp;           &nbs= p;=20
 Shensheng Zhang, Shanghai Jiao Tong University,=20 China           &n= bsp;        =20
 Shuigeng Zhou, Fudan University,=20 China           &n= bsp;           &nb= sp;          =20
 Xiaofang Zhou, University of Queensland, Australia =20             &= nbsp;      =20
 
--------------------  CIT2004  THE = END  =20 -----------------------
   
   =20
------=_NextPart_000_00BB_01C3EFF7.D0F8C230-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 05:23:39 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA10318 for ; Tue, 10 Feb 2004 05:23:39 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqV2s-0006wv-PB for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 05:23:12 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1AANA9x026712 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 05:23:10 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqV2j-0006wC-GH; Tue, 10 Feb 2004 05:23:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqV1l-0006ry-9b for avt@optimus.ietf.org; Tue, 10 Feb 2004 05:22:01 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA10270 for ; Tue, 10 Feb 2004 05:21:58 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqV1h-0004w1-00 for avt@ietf.org; Tue, 10 Feb 2004 05:21:58 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqV0n-0004p7-00 for avt@ietf.org; Tue, 10 Feb 2004 05:21:02 -0500 Received: from eagle.ericsson.se ([193.180.251.53]) by ietf-mx with esmtp (Exim 4.12) id 1AqUzn-0004ha-00 for avt@ietf.org; Tue, 10 Feb 2004 05:19:59 -0500 Received: from esealmw141.al.sw.ericsson.se ([153.88.254.120]) by eagle.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1AAJxAh022183 for ; Tue, 10 Feb 2004 11:20:00 +0100 Received: from esealnt612.al.sw.ericsson.se ([153.88.254.118]) by esealmw141.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 10 Feb 2004 11:19:59 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt612.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 1LJQFG9S; Tue, 10 Feb 2004 11:19:59 +0100 Message-ID: <4028AFCE.3080705@ericsson.com> Date: Tue, 10 Feb 2004 11:17:50 +0100 X-Sybari-Trust: d75b49a6 91259930 54753a94 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Mitsuyuki Hatanaka , Matthew Romaine CC: avt@ietf.org Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 10 Feb 2004 10:19:59.0743 (UTC) FILETIME=[703E50F0:01C3EFBF] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Signalling comments on draft-hatanaka-avt-atrac-family-00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi Hatanaka and Matthew, I have looked at the draft and will divide the comments into separate mails as they have different importance's. The simplification looks promising. This mails discuss the rather major signalling problem. There is need to resolve how the setup signalling for this payload format will work. The normal model is that one defines a MIME type, potentially with parameters that represents the codec over the defined payload format. If one has configuration information that needs to be conveyed these are included as MIME parameters that then is mapped into the description format, like the a=fmtp line in SDP. You will need to do the same. However as you have defined one payload format for a family of codecs there is importance that the you ensure that it can conveyed exactly what codec version, and its necessary parameters. I see two main branch of solutions, either use separate MIME types for each codec (probably more suitable if the number of codecs are few) or use a parameter that declares what codec is to be used. The first alternative is also more appropriate if the configuration information is different between the codecs. Please look also at my recent mails regarding channel information. To my understanding some of the ATRAC codecs support multi-channel content, thus also you will have these considerations. Please look at RFC 3267 or RFC 3558 for how it can look when defining the MIME parameter list. Please note that most of these parameters are in regards to the payload format configuration. For a proposal containing more codec related parameters, please look at draft-ietf-avt-rtp-h264-03.txt I am sorry that I can't be more specific, however my knowledge of the ATRAC codec is very limited. However if you want help you are welcome to contact us chairs. Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 07:01:37 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA13266 for ; Tue, 10 Feb 2004 07:01:37 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqWZh-0004Kr-1I for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 07:01:11 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1AC19Tr016664 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 07:01:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqWZa-0004KE-F5; Tue, 10 Feb 2004 07:01:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqWZW-0004JY-M4 for avt@optimus.ietf.org; Tue, 10 Feb 2004 07:00:58 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA13259 for ; Tue, 10 Feb 2004 07:00:54 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqWZS-00069a-00 for avt@ietf.org; Tue, 10 Feb 2004 07:00:54 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqWYN-00065T-00 for avt@ietf.org; Tue, 10 Feb 2004 06:59:47 -0500 Received: from eagle.ericsson.se ([193.180.251.53]) by ietf-mx with esmtp (Exim 4.12) id 1AqWXl-000615-00 for avt@ietf.org; Tue, 10 Feb 2004 06:59:09 -0500 Received: from esealmw142.al.sw.ericsson.se ([153.88.254.119]) by eagle.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1ABxAAh012052 for ; Tue, 10 Feb 2004 12:59:11 +0100 Received: from esealnt612.al.sw.ericsson.se ([153.88.254.118]) by esealmw142.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 10 Feb 2004 12:59:10 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt612.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 1LJQF7TP; Tue, 10 Feb 2004 12:37:30 +0100 Message-ID: <4028C1F9.2010701@ericsson.com> Date: Tue, 10 Feb 2004 12:35:21 +0100 X-Sybari-Trust: cd8f6d4d 91259930 54753a94 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Mitsuyuki Hatanaka , Matthew Romaine CC: avt@ietf.org Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 10 Feb 2004 11:59:10.0845 (UTC) FILETIME=[4B606AD0:01C3EFCD] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Editorial and formatting comments on draft-hatanaka-avt-rtp-atrac-family-00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Dear Hatanaka and Matthew, I have found a number of editorial comments on the draft. I do CC the list because a number of them is occurring regularly, and I therefore by presenting them to all people will reduce the reoccurrence of them. 1. The text in relation to RFC 2119, should be placed early, but having it on the first page is to early. The recommended place would be in a "definitions" or "conventions used in this document" section, which is located prior or directly after the introduction chapter. 2. Please ensure that the document gets the correct page breaks and page length. This is part of the ID-Nits: http://www.ietf.org/ID-nits.html 3. Please ensure that chapter headings are clearly visible. At least 2.2 has been wrapped into the text. 4. The usage of the normative language "MUST, MAY, SHOULD, etc." is lacking. It should not be overdone, however when interoperability needs to be ensured, like for how the number of frames field shall be interpreted, the use is motivated. There are also other places where improvements can be done. 5. The reference list is not split into normative and informative parts as is required since a while. Also reference 2 is not used. 6. The IPR statement is missing. Please add the appropriate statements from section 10.4 of RFC 2026. 7. The RTP header section. The only thing a payload format needs to care about in relation to the RTP header is the three fields, Timestamp, Marker bit, and payload type. The rest of the RTP header is used as defined by RFC 3550 and any profile. For example defining that that the X bit shall be set to 0 is not for a RTP payload format to do. There might be other mechanisms that use the header extension mechanism. Best Regards Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 07:05:29 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA13351 for ; Tue, 10 Feb 2004 07:05:29 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqWdT-0004uU-L5 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 07:05:03 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1AC53xH018841 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 07:05:03 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqWdS-0004sp-Nv; Tue, 10 Feb 2004 07:05:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqWdE-0004s6-2V for avt@optimus.ietf.org; Tue, 10 Feb 2004 07:04:48 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA13315 for ; Tue, 10 Feb 2004 07:04:43 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqWd9-0006SP-00 for avt@ietf.org; Tue, 10 Feb 2004 07:04:43 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqWcK-0006Ne-00 for avt@ietf.org; Tue, 10 Feb 2004 07:03:52 -0500 Received: from albatross-ext.wise.edt.ericsson.se ([193.180.251.49]) by ietf-mx with esmtp (Exim 4.12) id 1AqWbS-0006JA-00 for avt@ietf.org; Tue, 10 Feb 2004 07:02:58 -0500 Received: from esealmw142.al.sw.ericsson.se ([153.88.254.119]) by albatross-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1AC2wqY023153 for ; Tue, 10 Feb 2004 13:02:58 +0100 (MET) Received: from esealnt612.al.sw.ericsson.se ([153.88.254.118]) by esealmw142.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 10 Feb 2004 13:02:58 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt612.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 1LJQGKXF; Tue, 10 Feb 2004 13:02:56 +0100 Message-ID: <4028C7EF.2030007@ericsson.com> Date: Tue, 10 Feb 2004 13:00:47 +0100 X-Sybari-Trust: 378711a4 91259930 54753a94 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Mitsuyuki Hatanaka , Matthew Romaine CC: avt@ietf.org Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 10 Feb 2004 12:02:58.0520 (UTC) FILETIME=[D314DD80:01C3EFCD] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Further technical comments on draft-hatanaka-avt-rtp-atrac-family-00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Dear Hatanaka and Matthew, This email contains the last of my comments, which are of a technical nature. 1. I would like to see some more information about the codecs in the beginning of the draft. Especially properties like, possible sampling frequency, multi-channel support, frame sizes, etc. which effects the payload design. 2. The Frame Offset fields is not sufficiently defined. I don't understand how you can determine the TS offset for each frame in the packet using only this field. Also how does it work when there are more than 2 frames present in the same RTP payload? 3. What is the purpose of the frameID field? I am not certain I understand how it works, please elaborate on how it works and what purpose if fulfils. 4. The security section will need more work. I think there is need to discuss also authentication and integrity protection. Also congestion control might need some special consideration, due to redundancy transmission and possibility to vary bit-rate. Best Regards Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 09:30:43 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA19779 for ; Tue, 10 Feb 2004 09:30:43 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqYtz-0006Mt-6o for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 09:30:15 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1AEUFns024428 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 09:30:15 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqYtm-0006LF-Vc; Tue, 10 Feb 2004 09:30:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqYte-0006Ki-A9 for avt@optimus.ietf.org; Tue, 10 Feb 2004 09:29:54 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA19768 for ; Tue, 10 Feb 2004 09:29:51 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqYtc-0005OO-00 for avt@ietf.org; Tue, 10 Feb 2004 09:29:52 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqYse-0005JM-00 for avt@ietf.org; Tue, 10 Feb 2004 09:28:52 -0500 Received: from kcmso2.att.com ([192.128.134.71] helo=kcmso2.proxy.att.com) by ietf-mx with esmtp (Exim 4.12) id 1AqYsC-0005Ej-00 for avt@ietf.org; Tue, 10 Feb 2004 09:28:24 -0500 Received: from attrh5i.attrh.att.com ([135.38.62.12]) by kcmso2.proxy.att.com (AT&T IPNS/MSO-5.0) with ESMTP id i1AEH7qV022253 for ; Tue, 10 Feb 2004 08:27:54 -0600 Received: from KCCLUST06EVS1.ugd.att.com (135.38.164.88) by attrh5i.attrh.att.com (6.5.032) id 40169495007D448A; Tue, 10 Feb 2004 09:27:25 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Date: Tue, 10 Feb 2004 08:27:54 -0600 Message-ID: <9473683187ADC049A855ED2DA739ABCA02BA38E3@KCCLUST06EVS1.ugd.att.com> Thread-Topic: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt Thread-Index: AcPvKhdGaEmd/bjJQ4yVbbCc67m3RAAtkjhg From: "Ash, Gerald R (Jerry), ALABS" To: Cc: "Ash, Gerald R (Jerry), ALABS" , X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Subject: [AVT] RE: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Curtis, > > Please review and comment on 'Protocol Extensions for ECRTP over = MPLS' > > = http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protoco= l-00.txt=20 > > The protocol extensions enable the use of MPLS to route enhanced = compressed=20 > > RTP (ECRTP) compressed packets over an MPLS LSP without=20 > > compression/decompression cycles at each router. > >=20 > > The proposed extensions are based on the requirements documented in=20 > > 'Requirements for ECRTP over MPLS'=20 > > = http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-reqs-01= .txt. > >=20 > > Thanks, > > Jerry > Jerry, >=20 > This looks to be a very good direction to go in. Thanks Curtis! > In your encapsulations you should make sure to avoid any values in the > first byte that could be mistaken as IPv4 or IPv6 or any of the > encapsulations being worked on by those working on VPN and PW. See > "The PWE3 Control Word", Jonathan Stein, 22-Oct-02, > draft-stein-pwe3-controlword-00.txt, for some early discussion on > that. Note though that "Payload Type" is something that many > providers require so that multipath can be used on IP traffic which > constitutes the majority of traffic yet reordering is avoided for > traffic which cannot be split based on what appears to be an IP header > and the IP src/dst pair. >=20 > It might be best to reserve a single fixed first byte for the "Packet > Type" (and I suggest you make up a name for this shim such as > SCID_Packet_Type) and use the second byte for the packet types that > you have defined. Just as you have to get numbers for SCID_Request > Object and Header_Compression_Reply Object from IANA, you'll have to > coordinate with others over this number space, though it is less clear > if IANA is the authority on this quite yet. All good suggestions, will incorporate in the next Rev. Thanks a lot for your careful review, Jerry _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 09:34:29 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA19991 for ; Tue, 10 Feb 2004 09:34:29 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqYxd-0006XV-OI for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 09:34:02 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1AEY1ss025100 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 09:34:01 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqYxd-0006WI-41; Tue, 10 Feb 2004 09:34:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqYxW-0006Vr-VJ for avt@optimus.ietf.org; Tue, 10 Feb 2004 09:33:54 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA19985 for ; Tue, 10 Feb 2004 09:33:52 -0500 (EST) From: philippe.gentric@philips.com Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqYxV-0005p1-00 for avt@ietf.org; Tue, 10 Feb 2004 09:33:53 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqYwa-0005kh-00 for avt@ietf.org; Tue, 10 Feb 2004 09:32:56 -0500 Received: from gw-nl3.philips.com ([161.85.127.49]) by ietf-mx with esmtp (Exim 4.12) id 1AqYwN-0005fv-00 for avt@ietf.org; Tue, 10 Feb 2004 09:32:43 -0500 Received: from smtpscan-nl2.philips.com (smtpscan-nl2.philips.com [130.139.36.22]) by gw-nl3.philips.com (Postfix) with ESMTP id 90DFF2C196 for ; Tue, 10 Feb 2004 15:32:42 +0100 (MET) Received: from smtpscan-nl2.philips.com (localhost [127.0.0.1]) by localhost.philips.com (Postfix) with ESMTP id 3803D19C4E for ; Tue, 10 Feb 2004 15:32:42 +0100 (MET) Received: from smtprelay-nl2.philips.com (smtprelay-eur2.philips.com [130.139.36.35]) by smtpscan-nl2.philips.com (Postfix) with ESMTP id 0EA1219C4F for ; Tue, 10 Feb 2004 15:32:29 +0100 (MET) Received: from hbg001soh.diamond.philips.com (e1soh01.diamond.philips.com [130.143.165.45]) by smtprelay-nl2.philips.com (8.9.3p3/8.8.5-1.2.2m-19990317) with ESMTP id PAA10918 for ; Tue, 10 Feb 2004 15:32:28 +0100 (MET) To: avt@ietf.org X-Mailer: Lotus Notes Release 5.0.9a January 7, 2002 Message-ID: Date: Tue, 10 Feb 2004 15:32:29 +0100 X-MIMETrack: Serialize by Router on hbg001soh/H/SERVER/PHILIPS(Release 5.0.11 |July 24, 2002) at 10/02/2004 15:34:26 MIME-Version: 1.0 Content-type: text/plain; charset=us-ascii X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.4 required=5.0 tests=AWL,NO_REAL_NAME autolearn=no version=2.60 Subject: [AVT] draft-ietf-avt-uncomp-video-05.txt (Last Call announcement) Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Dear AVTers, Ladan, I have a couple of comments/questions about draft-ietf-avt-uncomp-video-05.txt Firstly the thing is globably good and sound, I like it. In 4.3 I have failed to understand how it is possible that YUV 4.2.0 progressive at 10 bits per sample can fit in a 5 octet pgroup (would it be possible that this would be 15 octet instead ?) [I confess I did not check all the pgroup sizes exhaustively] In 8. I have found one sentence where my english parser complains: "It is important to be note that uncompressed video can have immense..." best regards, Philippe Gentric Chief Architect Philips Software philippe.gentric@philips.com http://www.software.philips.com _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 11:09:38 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA25409 for ; Tue, 10 Feb 2004 11:09:38 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqaRh-0002oX-9m for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 11:09:12 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1AG99p4010800 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 11:09:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqaRZ-0002mV-MW; Tue, 10 Feb 2004 11:09:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqaQl-0002c6-Rr for avt@optimus.ietf.org; Tue, 10 Feb 2004 11:08:11 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA25253 for ; Tue, 10 Feb 2004 11:08:07 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqaQj-0007aR-00 for avt@ietf.org; Tue, 10 Feb 2004 11:08:09 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqaPn-0007RC-00 for avt@ietf.org; Tue, 10 Feb 2004 11:07:12 -0500 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47]) by ietf-mx with esmtp (Exim 4.12) id 1AqaOq-0007Gp-00 for avt@ietf.org; Tue, 10 Feb 2004 11:06:13 -0500 Received: from esealmw141.al.sw.ericsson.se ([153.88.254.120]) by penguin-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1AG6AYG021240 for ; Tue, 10 Feb 2004 17:06:10 +0100 (MET) Received: from esealnt611.al.sw.ericsson.se ([153.88.254.121]) by esealmw141.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 10 Feb 2004 17:06:10 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt611.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 1VSG5C5W; Tue, 10 Feb 2004 17:06:13 +0100 Message-ID: <402900F1.7040400@ericsson.com> Date: Tue, 10 Feb 2004 17:04:01 +0100 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Ross Finlayson CC: avt@ietf.org Subject: Re: [AVT] The RTP payload format for multichannel codecs's signal ling problem References: rsf@localhost (Unverified) <6.0.1.1.1.20040205135742.03461eb0@localhost> In-Reply-To: <6.0.1.1.1.20040205135742.03461eb0@localhost> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 10 Feb 2004 16:06:10.0680 (UTC) FILETIME=[CCAFC780:01C3EFEF] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi Ross, I don't think that is a good solution due to that if one is only capable of handling mono playback, then one might refuse to use this functionality, although one would in fact be able to support it. Therefore it seems rather important to be able to downgrade a channel setup from maximum to a small set. For a more critical example one might not support 6+1 channel, however one is interested of using 2 channels. Secondly, I don't know if the set of possible channels is obvious what requires less capability between all possible configuration. Is a quadraphonic setup less or more than a L+R, Center and Surround setup? Having explicit declaration of all used channel modes avoid these problems. Cheers Magnus Ross Finlayson wrote: >It seems to me that for any codec that carries channel etc. parameters >inband - and allows these parameters to change 'on the fly' - there is >an >implicit assumption that each receiver should be able to handle all >possible settings of these inband parameters. So, given this, your >first >proposed solution seems to make the most sense: Declare the AMR-WB+ RTP >payload type to be for stereo, even though all frames within such a >stream >might actually turn out to be mono. > > Ross. > > >_______________________________________________ >Audio/Video Transport Working Group >avt@ietf.org >https://www1.ietf.org/mailman/listinfo/avt > > > -- Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 11:27:38 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA26117 for ; Tue, 10 Feb 2004 11:27:38 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqaj4-0004Te-Uv for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 11:27:10 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1AGR67E017135 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 11:27:06 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqaix-0004SB-R2; Tue, 10 Feb 2004 11:26:59 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqait-0004Rb-IG for avt@optimus.ietf.org; Tue, 10 Feb 2004 11:26:55 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA26102 for ; Tue, 10 Feb 2004 11:26:53 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aqais-0001qN-00 for avt@ietf.org; Tue, 10 Feb 2004 11:26:54 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Aqai1-0001mG-00 for avt@ietf.org; Tue, 10 Feb 2004 11:26:01 -0500 Received: from porter.east.isi.edu ([65.114.168.19]) by ietf-mx with esmtp (Exim 4.12) id 1AqahM-0001hS-00 for avt@ietf.org; Tue, 10 Feb 2004 11:25:20 -0500 Received: from [65.114.168.149] (java.east.isi.edu [65.114.168.149]) by porter.east.isi.edu (8.12.8/8.12.8) with ESMTP id i1AGPJwN005989; Tue, 10 Feb 2004 11:25:19 -0500 (EST) In-Reply-To: References: Mime-Version: 1.0 (Apple Message framework v609) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: Content-Transfer-Encoding: 7bit Cc: avt@ietf.org From: Ladan Gharai Subject: Re: [AVT] draft-ietf-avt-uncomp-video-05.txt (Last Call announcement) Date: Tue, 10 Feb 2004 11:25:22 -0500 To: philippe.gentric@philips.com X-Mailer: Apple Mail (2.609) X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hello Philippe: Thank you for commenting on the draft. Please see comments inline. On Feb 10, 2004, at 9:32 AM, philippe.gentric@philips.com wrote: > > Dear AVTers, Ladan, > > I have a couple of comments/questions about > draft-ietf-avt-uncomp-video-05.txt > > Firstly the thing is globably good and sound, I like it. > > > In 4.3 I have failed to understand how it is possible that YUV 4.2.0 > progressive at 10 bits per sample > can fit in a 5 octet pgroup (would it be possible that this would be > 15 octet instead ?) You are absolutely correct, thank you for catching this - it is a 15 octet pgroup. > > [I confess I did not check all the pgroup sizes exhaustively] > > In 8. I have found one sentence where my english parser complains: > "It is important to be note that uncompressed video can have > immense..." will fix. > > > best regards, > > > > Philippe Gentric > Chief Architect > Philips Software > philippe.gentric@philips.com > http://www.software.philips.com > > > > _______________________________________________ > Audio/Video Transport Working Group > avt@ietf.org > https://www1.ietf.org/mailman/listinfo/avt > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 13:17:35 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA00921 for ; Tue, 10 Feb 2004 13:17:35 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqcRY-0005GF-2L for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 13:17:08 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1AIH83b020204 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 13:17:08 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqcRR-0005Ey-Be; Tue, 10 Feb 2004 13:17:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqcQY-0005Dv-OL for avt@optimus.ietf.org; Tue, 10 Feb 2004 13:16:06 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA00858 for ; Tue, 10 Feb 2004 13:16:02 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqcQW-0005YK-00 for avt@ietf.org; Tue, 10 Feb 2004 13:16:04 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqcPb-0005Sf-00 for avt@ietf.org; Tue, 10 Feb 2004 13:15:08 -0500 Received: from web41415.mail.yahoo.com ([66.218.93.81]) by ietf-mx with smtp (Exim 4.12) id 1AqcP7-0005MC-00 for avt@ietf.org; Tue, 10 Feb 2004 13:14:37 -0500 Message-ID: <20040210181406.10680.qmail@web41415.mail.yahoo.com> Received: from [209.246.224.110] by web41415.mail.yahoo.com via HTTP; Tue, 10 Feb 2004 10:14:06 PST Date: Tue, 10 Feb 2004 10:14:06 -0800 (PST) From: a a Subject: Re: [AVT] RE: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt To: "Ash, Gerald R \(Jerry\), ALABS" , avt@ietf.org Cc: "Ash, Gerald R \(Jerry\), ALABS" In-Reply-To: <9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Hi, It looks pretty good. I have a question rather than a comment: In this draft we are trying to add some new objects to the base RSVP-TE. RSVP or RSVP-TE so far have been kept immune from the applications that could make use of it. So, why are we planning to add something like "VoIP-CallIds" instead of some generic name or identifier that could be used by different applications in different contexts? The L3PID anyway would define the kind of the payload being carried and applications would be free to interpret that "generic identifier" in the fashion they want. (Pls. excuse me if I'm not privy to some information or earlier discussions). Today we have SIP (in VoIP networks) and that's why usage of VoIP-CallIds may be justified in some sense but tomorrow there could be some other protocol (that may use some other identifier instead of callId) and hence we may have to accomodate that as well. The other minor comments that I have are: * Though the draft states that packet type field would be prepended to the "packet formats" defined in ECRTP (RFC3545), a pictoral representation would be useful. * Most of the SIP RFCs and SIP drafts have associated example "Call Flows" with DETAILED message contents - either in separate drafts/RFCs or in Appendix sections to the main RFC/drafts. Can we do something similar for this draft as well? (It has some message seuqence shown but it's not that detailed). It would be useful to see the data plane encodings as well (with label stacks, packet types and compressed payloads etc.). Thanks. --- "Ash, Gerald R (Jerry), ALABS" wrote: > All, > > Please review and comment on 'Protocol Extensions > for ECRTP over MPLS' > http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protocol-00.txt. > The protocol extensions enable the use of MPLS to > route enhanced compressed RTP (ECRTP) compressed > packets over an MPLS LSP without > compression/decompression cycles at each router. > > The proposed extensions are based on the > requirements documented in 'Requirements for ECRTP > over MPLS' > http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-reqs-01.txt. > > Thanks, > Jerry > > -----Original Message----- > From: Internet-Drafts@ietf.org > [mailto:Internet-Drafts@ietf.org] > Sent: Thursday, February 05, 2004 3:43 PM > Subject: I-D > ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt > > A New Internet-Draft is available from the on-line > Internet-Drafts directories. > > > Title : Protocol Extensions for ECRTP over MPLS > Author(s) : J. Ash > Filename : > draft-ash-avt-ecrtp-over-mpls-protocol-00.txt > Pages : 0 > Date : 2004-2-5 > > VoIP typically uses the encapsulation > voice/RTP/UDP/IP. When MPLS labels > are added, this becomes > voice/RTP/UDP/IP/MPLS-labels. For an MPLS VPN, > the packet header is at least 48 bytes, while the > voice payload is often > no more than 30 bytes, for example. VoIP header > compression can > significantly reduce the VoIP overhead through > various compression > mechanisms, such as enhanced compressed RTP (ECRTP). > We consider using > MPLS to route ECRTP compressed packets over an MPLS > LSP without > compression/decompression cycles at each router. > Such an ECRTP over MPLS > capability can increase the bandwidth efficiency as > well as processing > scalability of the maximum number of simultaneous > VoIP flows that use > header compression at each router. In this draft we > propose to use > RSVP-TE extensions to signal the header compression > context and other > control messages between the ingress and egress LSR. > We re-use the > methods in ECRTP to determine the context. > > A URL for this Internet-Draft is: > http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protocol-00.txt. > > _______________________________________________ > Audio/Video Transport Working Group > avt@ietf.org > https://www1.ietf.org/mailman/listinfo/avt __________________________________ Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online. http://taxes.yahoo.com/filing.html _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 15:05:36 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA06442 for ; Tue, 10 Feb 2004 15:05:36 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqe84-000285-Ux for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 15:05:09 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1AK581r008184 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 15:05:08 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqe7z-00025W-Pt; Tue, 10 Feb 2004 15:05:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqe7C-0001Hp-2r for avt@optimus.ietf.org; Tue, 10 Feb 2004 15:04:14 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA06306 for ; Tue, 10 Feb 2004 15:04:10 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aqe79-0001m0-00 for avt@ietf.org; Tue, 10 Feb 2004 15:04:11 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Aqe68-0001eW-00 for avt@ietf.org; Tue, 10 Feb 2004 15:03:09 -0500 Received: from web41413.mail.yahoo.com ([66.218.93.79]) by ietf-mx with smtp (Exim 4.12) id 1Aqe5E-0001RF-00 for avt@ietf.org; Tue, 10 Feb 2004 15:02:12 -0500 Message-ID: <20040210200141.10125.qmail@web41413.mail.yahoo.com> Received: from [209.246.224.110] by web41413.mail.yahoo.com via HTTP; Tue, 10 Feb 2004 12:01:41 PST Date: Tue, 10 Feb 2004 12:01:41 -0800 (PST) From: a a Subject: Re: [AVT] RE: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt To: avt@ietf.org In-Reply-To: <20040210181406.10680.qmail@web41415.mail.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --- a a wrote: > Hi, > > It looks pretty good. I have a question rather than > a > comment: > > In this draft we are trying to add some new objects > to > the base RSVP-TE. RSVP or RSVP-TE so far have been > kept immune from the applications that could make > use > of it. So, why are we planning to add something like > "VoIP-CallIds" instead of some generic name or > identifier that could be used by different > applications in different contexts? The L3PID anyway > would define the kind of the payload being carried > and > applications would be free to interpret that > "generic > identifier" in the fashion they want. (Pls. excuse > me > if I'm not privy to some information or earlier > discussions). > > Today we have SIP (in VoIP networks) and that's why > usage of VoIP-CallIds may be justified in some sense > but tomorrow there could be some other protocol > (that > may use some other identifier instead of callId) and > hence we may have to accomodate that as well. > > The other minor comments that I have are: > * Though the draft states that packet type field > would > be prepended to the "packet formats" defined in > ECRTP > (RFC3545), a pictoral representation would be > useful. > > * Most of the SIP RFCs and SIP drafts have > associated > example "Call Flows" with DETAILED message contents > - > either in separate drafts/RFCs or in Appendix > sections > to the main RFC/drafts. Can we do something similar > for this draft as well? (It has some message > seuqence > shown but it's not that detailed). It would be > useful > to see the data plane encodings as well (with label > stacks, packet types and compressed payloads etc.). > > Thanks. > > > > > --- "Ash, Gerald R (Jerry), ALABS" > wrote: > > All, > > > > Please review and comment on 'Protocol Extensions > > for ECRTP over MPLS' > > > http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protocol-00.txt. > > The protocol extensions enable the use of MPLS to > > route enhanced compressed RTP (ECRTP) compressed > > packets over an MPLS LSP without > > compression/decompression cycles at each router. > > > > The proposed extensions are based on the > > requirements documented in 'Requirements for ECRTP > > over MPLS' > > > http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-reqs-01.txt. > > > > Thanks, > > Jerry > > > > -----Original Message----- > > From: Internet-Drafts@ietf.org > > [mailto:Internet-Drafts@ietf.org] > > Sent: Thursday, February 05, 2004 3:43 PM > > Subject: I-D > > > ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt > > > > A New Internet-Draft is available from the on-line > > Internet-Drafts directories. > > > > > > Title : Protocol Extensions for ECRTP over MPLS > > Author(s) : J. Ash > > Filename : > > draft-ash-avt-ecrtp-over-mpls-protocol-00.txt > > Pages : 0 > > Date : 2004-2-5 > > > > VoIP typically uses the encapsulation > > voice/RTP/UDP/IP. When MPLS labels > > are added, this becomes > > voice/RTP/UDP/IP/MPLS-labels. For an MPLS VPN, > > the packet header is at least 48 bytes, while the > > voice payload is often > > no more than 30 bytes, for example. VoIP header > > compression can > > significantly reduce the VoIP overhead through > > various compression > > mechanisms, such as enhanced compressed RTP > (ECRTP). > > We consider using > > MPLS to route ECRTP compressed packets over an > MPLS > > LSP without > > compression/decompression cycles at each router. > > Such an ECRTP over MPLS > > capability can increase the bandwidth efficiency > as > > well as processing > > scalability of the maximum number of simultaneous > > VoIP flows that use > > header compression at each router. In this draft > we > > propose to use > > RSVP-TE extensions to signal the header > compression > > context and other > > control messages between the ingress and egress > LSR. > > We re-use the > > methods in ECRTP to determine the context. > > > > A URL for this Internet-Draft is: > > > http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protocol-00.txt. > > > > _______________________________________________ > > Audio/Video Transport Working Group > > avt@ietf.org > > https://www1.ietf.org/mailman/listinfo/avt > > > __________________________________ > Do you Yahoo!? > Yahoo! Finance: Get your refund fast by filing > online. > http://taxes.yahoo.com/filing.html __________________________________ Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online. http://taxes.yahoo.com/filing.html _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 15:51:40 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA13209 for ; Tue, 10 Feb 2004 15:51:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqeqe-00042S-8F for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 15:51:12 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1AKpCQW015474 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 15:51:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqeqT-0003zq-Ot; Tue, 10 Feb 2004 15:51:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqeq6-0003zE-Qy for avt@optimus.ietf.org; Tue, 10 Feb 2004 15:50:38 -0500 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA13068; Tue, 10 Feb 2004 15:50:36 -0500 (EST) Message-Id: <200402102050.PAA13068@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: IETF-Announce: ; Cc: avt@ietf.org From: Internet-Drafts@ietf.org Reply-to: Internet-Drafts@ietf.org Date: Tue, 10 Feb 2004 15:50:36 -0500 Subject: [AVT] I-D ACTION:draft-ietf-avt-rfc3119bis-02.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Audio/Video Transport Working Group of the IETF. Title : A More Loss-Tolerant RTP Payload Format for MP3 Audio Author(s) : R. Finlayson Filename : draft-ietf-avt-rfc3119bis-02.txt Pages : 0 Date : 2004-2-10 This document describes a RTP (Real-Time Protocol) payload format for transporting MPEG (Moving Picture Experts Group) 1 or 2, layer III audio (commonly known as 'MP3'). This format is an alternative to that described in RFC 2250, and performs better if there is packet loss. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-avt-rfc3119bis-02.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-avt-rfc3119bis-02.txt". 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Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2004-2-10152444.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-avt-rfc3119bis-02.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-avt-rfc3119bis-02.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2004-2-10152444.I-D@ietf.org> --OtherAccess-- --NextPart-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 10 18:34:32 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id SAA29985 for ; Tue, 10 Feb 2004 18:34:32 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqhOI-0003eN-AP for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 18:34:06 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1ANY6ZJ014027 for avt-archive@odin.ietf.org; Tue, 10 Feb 2004 18:34:06 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqhOC-0003db-PM; Tue, 10 Feb 2004 18:34:00 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqhNR-0003Un-5E for avt@optimus.ietf.org; Tue, 10 Feb 2004 18:33:13 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id SAA29951 for ; Tue, 10 Feb 2004 18:33:08 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqhNO-0007gD-00 for avt@ietf.org; Tue, 10 Feb 2004 18:33:10 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqhMP-0007bK-00 for avt@ietf.org; Tue, 10 Feb 2004 18:32:10 -0500 Received: from ns.live.com ([66.80.62.34]) by ietf-mx with esmtp (Exim 4.12) id 1AqhLn-0007Wu-00 for avt@ietf.org; Tue, 10 Feb 2004 18:31:31 -0500 Received: from ns.live.com (localhost.live.com [127.0.0.1]) by ns.live.com (8.12.10/8.12.10) with ESMTP id i1ANVQGB041653 for ; Tue, 10 Feb 2004 15:31:26 -0800 (PST) (envelope-from rsf@ns.live.com) Received: (from rsf@localhost) by ns.live.com (8.12.10/8.12.9/Submit) id i1ANVQv8041652; Tue, 10 Feb 2004 15:31:26 -0800 (PST) (envelope-from rsf) Message-Id: <6.0.1.1.1.20040210151631.02d500f0@localhost> X-Sender: rsf@localhost (Unverified) X-Mailer: QUALCOMM Windows Eudora Version 6.0.1.1 Date: Tue, 10 Feb 2004 15:29:14 -0800 To: avt@ietf.org From: Ross Finlayson Subject: Re: [AVT] The RTP payload format for multichannel codecs's signal ling problem In-Reply-To: <402900F1.7040400@ericsson.com> References: <402900F1.7040400@ericsson.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , >>It seems to me that for any codec that carries channel etc. parameters >>inband - and allows these parameters to change 'on the fly' - there is >>an implicit assumption that each receiver should be able to handle all >>possible settings of these inband parameters. So, given this, your >>first proposed solution seems to make the most sense: Declare the AMR-WB+ >>RTP payload type to be for stereo, even though all frames within such a >>stream might actually turn out to be mono. >I don't think that is a good solution due to that if one is only capable >of handling mono playback, then one might refuse to use this >functionality, although one would in fact be able to support it. Therefore >it seems rather important to be able to downgrade a channel setup from >maximum to a small set. For a more critical example one might not support >6+1 channel, however one is interested of using 2 channels. > >Secondly, I don't know if the set of possible channels is obvious what >requires less capability between all possible configuration. Is a >quadraphonic setup less or more than a L+R, Center and Surround setup? >Having explicit declaration of all used channel modes avoid these problems. Magnus, That's true - however, explicitly declaring (in the SDP) which channel modes are intended to be used leads to the question of what should a receiver do if it later receives a stream with inband parameters that violate the modes that were declared earlier. E.g., if it was declared that only mono should be sent, then what should a receiver do if it later ends up receiving stereo? Note, of course, that this is only an issue for those payload formats where channel parameters are carried inband. If you're going to allow - for such payload formats - less than the complete channel functionality to be declared in advance, then the payload format specification needs to say *something* about what a receiver should do it it receives data with different functionality. Even saying "the receivers actions are undefined" in this case is better than saying nothing :-) Ross. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 11 07:07:36 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA28345 for ; Wed, 11 Feb 2004 07:07:36 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqt93-0004UT-8W for avt-archive@odin.ietf.org; Wed, 11 Feb 2004 07:07:10 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1BC79Lk017211 for avt-archive@odin.ietf.org; Wed, 11 Feb 2004 07:07:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqt8v-0004Qe-7H; Wed, 11 Feb 2004 07:07:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqt8a-0004Pz-Dv for avt@optimus.ietf.org; Wed, 11 Feb 2004 07:06:40 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA28330 for ; Wed, 11 Feb 2004 07:06:36 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aqt8W-0003Zr-00 for avt@ietf.org; Wed, 11 Feb 2004 07:06:36 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Aqt7Y-0003Ua-00 for avt@ietf.org; Wed, 11 Feb 2004 07:05:36 -0500 Received: from almso2.att.com ([192.128.166.71] helo=almso2.proxy.att.com) by ietf-mx with esmtp (Exim 4.12) id 1Aqt73-0003PE-00 for avt@ietf.org; Wed, 11 Feb 2004 07:05:10 -0500 Received: from attrh5i.attrh.att.com ([135.38.62.12]) by almso2.proxy.att.com (AT&T IPNS/MSO-5.0) with ESMTP id i1BC3ogv009708 for ; Wed, 11 Feb 2004 07:04:26 -0500 Received: from KCCLUST06EVS1.ugd.att.com (135.38.164.88) by attrh5i.attrh.att.com (6.5.032) id 401694950084AF74; Wed, 11 Feb 2004 07:03:23 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Subject: RE: [AVT] RE: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt Date: Wed, 11 Feb 2004 06:03:52 -0600 Message-ID: <9473683187ADC049A855ED2DA739ABCA0201F063@KCCLUST06EVS1.ugd.att.com> Thread-Topic: [AVT] RE: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt Thread-Index: AcPwAa5ZqeZ++hY3SeumRLQKJH+oDQAkyPrg From: "Ash, Gerald R (Jerry), ALABS" To: "a a" , Cc: "Ash, Gerald R (Jerry), ALABS" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Dear a a, > It looks pretty good.=20 Thanks. > I have a question rather than a comment: > In this draft we are trying to add some new objects to > the base RSVP-TE. RSVP or RSVP-TE so far have been > kept immune from the applications that could make use > of it. So, why are we planning to add something like > "VoIP-CallIds" instead of some generic name or > identifier that could be used by different > applications in different contexts? The L3PID anyway > would define the kind of the payload being carried and > applications would be free to interpret that "generic > identifier" in the fashion they want. (Pls. excuse me > if I'm not privy to some information or earlier > discussions). This is a good comment. I think a generic name is appropriate such that = the protocol is applicable to any real-time ECRTP flow over MPLS. We'll = generalize that in the next Rev. > Today we have SIP (in VoIP networks) and that's why > usage of VoIP-CallIds may be justified in some sense > but tomorrow there could be some other protocol (that > may use some other identifier instead of callId) and > hence we may have to accommodate that as well. Good point. Needs to be generalized. =20 > The other minor comments that I have are: > * Though the draft states that packet type field would > be prepended to the "packet formats" defined in ECRTP > (RFC3545), a pictorial representation would be useful. OK. =20 > * Most of the SIP RFCs and SIP drafts have associated > example "Call Flows" with DETAILED message contents - > either in separate drafts/RFCs or in Appendix sections > to the main RFC/drafts. Can we do something similar > for this draft as well? (It has some message sequence > shown but it's not that detailed). It would be useful > to see the data plane encodings as well (with label > stacks, packet types and compressed payloads etc.). As you suggest, I think a separate draft (or perhaps an Appendix) would = be appropriate for detailed message flows. Thanks a lot for your review, comments, and suggestions. Jerry > --- "Ash, Gerald R (Jerry), ALABS" > wrote: > > All, > >=20 > > Please review and comment on 'Protocol Extensions for ECRTP over = MPLS' > > = http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protoco= l-00.txt. > > The protocol extensions enable the use of MPLS to > > route enhanced compressed RTP (ECRTP) compressed packets over an = MPLS LSP without > > compression/decompression cycles at each router. > >=20 > > The proposed extensions are based on the > > requirements documented in 'Requirements for ECRTP over MPLS' > = http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-reqs-01= .txt. > >=20 > > Thanks, > > Jerry _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 11 09:43:42 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA02746 for ; Wed, 11 Feb 2004 09:43:42 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aqva5-0007R2-Jd for avt-archive@odin.ietf.org; Wed, 11 Feb 2004 09:43:14 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1BEhDv7028530 for avt-archive@odin.ietf.org; Wed, 11 Feb 2004 09:43:13 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqvZt-0007PG-PF; Wed, 11 Feb 2004 09:43:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AqvZr-0007Ow-Jo for avt@optimus.ietf.org; Wed, 11 Feb 2004 09:42:59 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA02721 for ; Wed, 11 Feb 2004 09:42:56 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AqvZp-00039S-00 for avt@ietf.org; Wed, 11 Feb 2004 09:42:57 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AqvYq-00032u-00 for avt@ietf.org; Wed, 11 Feb 2004 09:41:56 -0500 Received: from dundee.dcs.gla.ac.uk ([130.209.242.163]) by ietf-mx with esmtp (Exim 4.12) id 1AqvYN-0002vt-00 for avt@ietf.org; Wed, 11 Feb 2004 09:41:27 -0500 Received: from pub-233.nesc.ed.ac.uk ([129.215.30.233]:1471 helo=mangole.dcs.gla.ac.uk) by dundee.dcs.gla.ac.uk with asmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.04) id 1AqvXr-0000Mt-00; Wed, 11 Feb 2004 14:40:56 +0000 Date: Wed, 11 Feb 2004 13:45:03 +0000 From: Colin Perkins To: "Ash, Gerald R (Jerry), ALABS" Cc: avt@ietf.org, mpls@UU.NET, gash@att.com Subject: Re: [AVT] RE: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt Message-Id: <20040211134503.0d98b673.csp@csperkins.org> In-Reply-To: <9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> References: <9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> Organization: http://csperkins.org/ X-Mailer: Sylpheed version 0.9.9 (GTK+ 1.2.10; i386-portbld-freebsd4.9) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Folks, I'm happy that there is interest in this protocol, however I would like to remind folks that we have not yet agreed on the requirements documents, or decided the appropriate home for this work. At the risk of delaying this work for a few weeks, could we first make sure there is consensus that the requirements are appropriate, before trying to build a protocol that addresses them? Colin --> "Ash, Gerald R (Jerry), ALABS" writes: > All, > > Please review and comment on 'Protocol Extensions for ECRTP over MPLS' > http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protocol-00.txt. > The protocol extensions enable the use of MPLS to route enhanced > compressed RTP (ECRTP) compressed packets over an MPLS LSP without > compression/decompression cycles at each router. > > The proposed extensions are based on the requirements documented in > 'Requirements for ECRTP over MPLS' > http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-reqs-01.txt. > > Thanks, > Jerry > > -----Original Message----- > From: Internet-Drafts@ietf.org [mailto:Internet-Drafts@ietf.org] > Sent: Thursday, February 05, 2004 3:43 PM > Subject: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt > > A New Internet-Draft is available from the on-line Internet-Drafts > directories. > > > Title : Protocol Extensions for ECRTP over MPLS > Author(s) : J. Ash > Filename : draft-ash-avt-ecrtp-over-mpls-protocol-00.txt > Pages : 0 > Date : 2004-2-5 > > VoIP typically uses the encapsulation voice/RTP/UDP/IP. When MPLS labels > are added, this becomes voice/RTP/UDP/IP/MPLS-labels. For an MPLS VPN, > the packet header is at least 48 bytes, while the voice payload is often > no more than 30 bytes, for example. VoIP header compression can > significantly reduce the VoIP overhead through various compression > mechanisms, such as enhanced compressed RTP (ECRTP). We consider using > MPLS to route ECRTP compressed packets over an MPLS LSP without > compression/decompression cycles at each router. Such an ECRTP over MPLS > capability can increase the bandwidth efficiency as well as processing > scalability of the maximum number of simultaneous VoIP flows that use > header compression at each router. In this draft we propose to use > RSVP-TE extensions to signal the header compression context and other > control messages between the ingress and egress LSR. We re-use the > methods in ECRTP to determine the context. > > A URL for this Internet-Draft is: > http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protocol-00.txt. > > _______________________________________________ > Audio/Video Transport Working Group > avt@ietf.org > https://www1.ietf.org/mailman/listinfo/avt -- Colin Perkins http://csperkins.org/ _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 12 00:30:37 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id AAA25297 for ; Thu, 12 Feb 2004 00:30:37 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ar9QP-0004z2-Uh for avt-archive@odin.ietf.org; Thu, 12 Feb 2004 00:30:10 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1C5U9OL019105 for avt-archive@odin.ietf.org; Thu, 12 Feb 2004 00:30:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ar9QH-0004xM-Mn; Thu, 12 Feb 2004 00:30:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ar9QC-0004wd-9E for avt@optimus.ietf.org; Thu, 12 Feb 2004 00:29:56 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id AAA25284 for ; Thu, 12 Feb 2004 00:29:52 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Ar9Q9-0004h1-00 for avt@ietf.org; Thu, 12 Feb 2004 00:29:53 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Ar9PB-0004c9-00 for avt@ietf.org; Thu, 12 Feb 2004 00:28:54 -0500 Received: from gh-mail.centurytel.net ([209.206.160.252]) by ietf-mx with esmtp (Exim 4.12) id 1Ar9OK-0004WY-00 for avt@ietf.org; Thu, 12 Feb 2004 00:28:01 -0500 Received: from real.com (pppoe-209-206-242-80-rb.gh.centurytel.net [209.206.242.80]) by gh-mail.centurytel.net (8.12.10/8.12.10) with ESMTP id i1C5Rvrc006583; Wed, 11 Feb 2004 23:27:57 -0600 (CST) Message-ID: <402AAC47.3090700@real.com> Date: Wed, 11 Feb 2004 14:27:19 -0800 From: Damon Lanphear User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20031014 Thunderbird/0.3 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Ladan Gharai CC: avt@ietf.org Subject: Re: [AVT] New Draft: RTP Profile for TCP Friendly Rate Control References: <4A55F4D4-5A9D-11D8-89ED-000A95C47376@isi.edu> In-Reply-To: <4A55F4D4-5A9D-11D8-89ED-000A95C47376@isi.edu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.6 required=5.0 tests=DATE_IN_PAST_06_12 autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit It should be possible to implement a sender based variant of TFRC using the existing set of RTP protocol . The RTT can be deduced from the RTCP RR at the sender, as can a loss event mapping. A loss event is defined by TFRC as one or more packet losses in a single RTT. If RTCP RRs are received once per RTT, then the loss event rate can be reasonably deduced using the difference in the RTCP RR cumulative loss field between consecuative RTCP RRs. Ladan Gharai wrote: > Dear AVT'ers: > > I have just submitted a new draft draft-gharai-avt-tfrc-profile-00.txt > to the Internet Drafts editor. The draft is also available on line at > http://www.east.isi.edu/projects/MACC/tfrc-profile.txt > > This is a preliminary draft for a RTP profile for TFRC, "RTP/AVPCC". > Please read and comment on the draft, in particular on the following > two items: > > (I) A TFRC receiver depends on receiving estimates of the > current RTT and the send time of each RTP packet, in order to compute > its loss event rate. > A simplistic approach to providing this information to the > receiver is to add fixed fields to the RTP data header. This approach > has a number of draw backs: (1) current implementations may not be > able to parse such packets; (2) additional overhead of 8 octets in > each data packet. > Ideally, a TFRC receiver would be able to make do with the > standard RTP time stamp (which denotes sampling or presentation time) > - and would be able to compute the RTT itself (with the added bonus of > also providing it to the TFRC sender). > This raises two questions: (1) does the RTP time stamp suffice > for loss event calculations? and (2) is it possible to have the > receiver compute RTTs? > > > (II) A TFRC sender requires feedback at least once per RTT. > Depending on the data rate of a flow and the RTT, this TFRC > requirement may result in violation of RTCPs minimum interval and > bandwidth restrictions/recommendations. According to RFC3550 a > profile MAY specify control traffic bandwidth as a separate session > parameter. Is there a similar provision for profiles where the scaled > minimum RTCP interval does not suffice? (i.e. where does the profile > state that it cannot abide by the recommended minimum RTCP interval?) > > Ladan Gharai > http://www.east.isi.edu/~ladan > > > _______________________________________________ > Audio/Video Transport Working Group > avt@ietf.org > https://www1.ietf.org/mailman/listinfo/avt _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 12 03:16:37 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA13760 for ; Thu, 12 Feb 2004 03:16:37 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArC12-0007eY-7X for avt-archive@odin.ietf.org; Thu, 12 Feb 2004 03:16:08 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1C8G8r8029369 for avt-archive@odin.ietf.org; Thu, 12 Feb 2004 03:16:08 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArC0x-0007cx-G5; Thu, 12 Feb 2004 03:16:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArC0s-0007cI-NL for avt@optimus.ietf.org; Thu, 12 Feb 2004 03:15:58 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA13752 for ; Thu, 12 Feb 2004 03:15:57 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1ArC0q-00055B-00 for avt@ietf.org; Thu, 12 Feb 2004 03:15:56 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1ArBzt-000503-00 for avt@ietf.org; Thu, 12 Feb 2004 03:14:57 -0500 Received: from web41902.mail.yahoo.com ([66.218.93.153]) by ietf-mx with smtp (Exim 4.12) id 1ArByw-0004qX-00 for avt@ietf.org; Thu, 12 Feb 2004 03:13:58 -0500 Message-ID: <20040212081328.39416.qmail@web41902.mail.yahoo.com> Received: from [202.134.200.4] by web41902.mail.yahoo.com via HTTP; Thu, 12 Feb 2004 00:13:28 PST Date: Thu, 12 Feb 2004 00:13:28 -0800 (PST) From: shailendra singh To: avt@ietf.org MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-1771124792-1076573608=:37931" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.8 required=5.0 tests=AWL,DEAR_SOMETHING,HTML_20_30, HTML_MESSAGE autolearn=no version=2.60 Subject: [AVT] answer to my query Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --0-1771124792-1076573608=:37931 Content-Type: text/plain; charset=us-ascii Dear sir/madam, Actually I am working on a mutimedia video conferencing.But I am not able to synchronize audio and video when transmitting it.Kindly suggest me any algorithm for lip synchronization so that I can implement it into C Or C++ Or VC++. I need ur help kindly help me. Shailendra Singh --------------------------------- Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online --0-1771124792-1076573608=:37931 Content-Type: text/html; charset=us-ascii
Dear sir/madam,
Actually I am working on a mutimedia video conferencing.But I am not able to synchronize audio and video when transmitting it.Kindly suggest me any algorithm for lip synchronization so that I can implement it into C Or C++ Or VC++.
                          I need ur help kindly help me.
 


Shailendra Singh

Do you Yahoo!?
Yahoo! Finance: Get your refund fast by filing online --0-1771124792-1076573608=:37931-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 12 19:14:47 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id TAA27563 for ; Thu, 12 Feb 2004 19:14:47 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArQyJ-0005Cg-8n for avt-archive@odin.ietf.org; Thu, 12 Feb 2004 19:14:19 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1D0EJwO019953 for avt-archive@odin.ietf.org; Thu, 12 Feb 2004 19:14:19 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArQy3-00056e-MA; Thu, 12 Feb 2004 19:14:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArQxf-0004vO-3e for avt@optimus.ietf.org; Thu, 12 Feb 2004 19:13:39 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id TAA27373 for ; Thu, 12 Feb 2004 19:13:36 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1ArQxb-0000tI-00 for avt@ietf.org; Thu, 12 Feb 2004 19:13:35 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1ArQwF-0000XV-00 for avt@ietf.org; Thu, 12 Feb 2004 19:12:12 -0500 Received: from pr-66-150-46-254.wgate.com ([66.150.46.254] helo=mail.tvol.net) by ietf-mx with esmtp (Exim 4.12) id 1ArQuO-00003M-00 for avt@ietf.org; Thu, 12 Feb 2004 19:10:16 -0500 Received: from jesup.eng.tvol.net ([10.32.2.26]) by mail.tvol.net with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id D23Z81WJ; Thu, 12 Feb 2004 19:10:01 -0500 Reply-to: Randell Jesup To: shailendra singh Cc: avt@ietf.org Subject: Re: [AVT] answer to my query References: <20040212081328.39416.qmail@web41902.mail.yahoo.com> From: Randell Jesup Date: 12 Feb 2004 19:12:18 -0500 In-Reply-To: <20040212081328.39416.qmail@web41902.mail.yahoo.com> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , shailendra singh writes: >Actually I am working on a mutimedia video conferencing.But I am not >able to synchronize audio and video when transmitting it.Kindly suggest >me any algorithm for lip synchronization so that I can implement it into >C Or C++ Or VC++. If you're using RTP, you'll need to use the RTCP SR messages to correlate the RTP timestamps of the two streams. Once you know the correlation, you can synchronize properly (how you decide to do that is up to you and depends on too many things to go into here). Until you have SR's from both, you'll need to make assumptions about the timestamp correlation. If you're not using RTP, then this really isn't the right place to ask. -- Randell Jesup, Worldgate Communications, ex-Scala, ex-Amiga OS team rjesup@wgate.com "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -Benjamin Franklin, Historical Review of Pennsylvania, 1759. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Fri Feb 13 05:02:37 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA01362 for ; Fri, 13 Feb 2004 05:02:37 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ara9F-0003C8-LF for avt-archive@odin.ietf.org; Fri, 13 Feb 2004 05:02:13 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1DA2Dfe012234 for avt-archive@odin.ietf.org; Fri, 13 Feb 2004 05:02:13 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ara94-0003AW-5y; Fri, 13 Feb 2004 05:02:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ara56-0002x8-Rv for avt@optimus.ietf.org; Fri, 13 Feb 2004 04:57:56 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA01059 for ; Fri, 13 Feb 2004 04:57:49 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Ara4x-0006J0-00 for avt@ietf.org; Fri, 13 Feb 2004 04:57:48 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Ara46-0006Et-00 for avt@ietf.org; Fri, 13 Feb 2004 04:56:54 -0500 Received: from p-mail2.rd.francetelecom.com ([195.101.245.16]) by ietf-mx with esmtp (Exim 4.12) id 1Ara3P-0006AS-00 for avt@ietf.org; Fri, 13 Feb 2004 04:56:11 -0500 Received: from parmhs2.rd.francetelecom.fr ([10.193.117.61]) by parsmtp2.rd.francetelecom.com with Microsoft SMTPSVC(5.0.2195.6747); Fri, 13 Feb 2004 10:56:12 +0100 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Date: Fri, 13 Feb 2004 10:56:12 +0100 Message-ID: <448914041F29D7499FA5F0B8ED1C708701F8E859@parmhs2.rd.francetelecom.fr> Thread-Topic: Clearmode in context of ISDN7 kHz calls Thread-Index: AcPv8EdzDc2q9ibhRyClbru+vtSS1ACJk6NA From: =?iso-8859-1?Q?GARCIN_S=E9bastien_FTRD/DAC/ISS?= To: "zzx-IETF-AVT" X-OriginalArrivalTime: 13 Feb 2004 09:56:13.0173 (UTC) FILETIME=[9D2E4250:01C3F217] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Subject: [AVT] Clearmode in context of ISDN7 kHz calls Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Hi all, I have a question with regard to the "RTP payload format for a 64 kbit/s = transparent call" draft. It is said that Clearmode can be used to = transfer ISDN 7 kHz voice streams. However payload type 9 is also = supposed to transfer G722 audio streams.=20 If this is correct, what is the criteria for selecting clearmode = (dynamic PT) or the static payload type 9? Thanks, Regards=20 S=E9bastien Garcin France T=E9l=E9com R&D =20 _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Fri Feb 13 05:24:28 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA02173 for ; Fri, 13 Feb 2004 05:24:28 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AraUP-00051g-5D for avt-archive@odin.ietf.org; Fri, 13 Feb 2004 05:24:05 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1DAO5Hb019268 for avt-archive@odin.ietf.org; Fri, 13 Feb 2004 05:24:05 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AraUL-0004zz-QW; Fri, 13 Feb 2004 05:24:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AraUE-0004zi-I1 for avt@optimus.ietf.org; Fri, 13 Feb 2004 05:23:54 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA02151 for ; Fri, 13 Feb 2004 05:23:47 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AraU5-0000wo-00 for avt@ietf.org; Fri, 13 Feb 2004 05:23:45 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AraT9-0000sx-00 for avt@ietf.org; Fri, 13 Feb 2004 05:22:47 -0500 Received: from thoth.sbs.de ([192.35.17.2]) by ietf-mx with esmtp (Exim 4.12) id 1AraSD-0000oh-00 for avt@ietf.org; Fri, 13 Feb 2004 05:21:49 -0500 Received: from mail1.siemens.de (mail1.siemens.de [139.23.33.14]) by thoth.sbs.de (8.11.7/8.11.7) with ESMTP id i1DALpK03124; Fri, 13 Feb 2004 11:21:51 +0100 (MET) Received: from mchp9daa.mch.sbs.de (mchp9daa.mch.sbs.de [139.25.137.99]) by mail1.siemens.de (8.11.7/8.11.7) with ESMTP id i1DALpV15243; Fri, 13 Feb 2004 11:21:51 +0100 (MET) Received: by mchp9daa.mch.sbs.de with Internet Mail Service (5.5.2657.72) id ; Fri, 13 Feb 2004 11:21:15 +0100 Message-ID: From: Kreuter Ruediger To: =?iso-8859-1?Q?=27GARCIN_S=E9bastien_FTRD/DAC/ISS=27?= , zzx-IETF-AVT Subject: RE: [AVT] Clearmode in context of ISDN7 kHz calls Date: Fri, 13 Feb 2004 11:20:56 +0100 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable H S=E9basttien, if both ends of a RTP connection, i.e. e.g. both VoIP media gateways,=20 support G.722, then you can use this Codec for ISDN 7kHz voice trunks (using RTP PT=3D9) . Unfortunately many Gateways in the field do not support G.722. In that case Clearmode is the choice to be used (RTP PT<>9). And Clearmode must be supported anyway for ISDN data. Best regards R=FCdiger Kreuter Siemens AG Corporate Technology -----Original Message----- From: GARCIN S=E9bastien FTRD/DAC/ISS [mailto:sebastien.garcin@francetelecom.com]=20 Sent: Friday, February 13, 2004 10:56 AM To: zzx-IETF-AVT Subject: [AVT] Clearmode in context of ISDN7 kHz calls Hi all, I have a question with regard to the "RTP payload format for a 64 = kbit/s transparent call" draft. It is said that Clearmode can be used to = transfer ISDN 7 kHz voice streams. However payload type 9 is also supposed to transfer G722 audio streams.=20 If this is correct, what is the criteria for selecting clearmode = (dynamic PT) or the static payload type 9? Thanks, Regards=20 S=E9bastien Garcin France T=E9l=E9com R&D =20 _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Fri Feb 13 11:48:35 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA19538 for ; Fri, 13 Feb 2004 11:48:35 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArgU3-0003Y5-SK for avt-archive@odin.ietf.org; Fri, 13 Feb 2004 11:48:08 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1DGm7Hv013637 for avt-archive@odin.ietf.org; Fri, 13 Feb 2004 11:48:07 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArgTy-0003WW-SJ; Fri, 13 Feb 2004 11:48:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArgTT-0003Ts-HX for avt@optimus.ietf.org; Fri, 13 Feb 2004 11:47:31 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA19389 for ; Fri, 13 Feb 2004 11:47:28 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1ArgTS-0002WH-00 for avt@ietf.org; Fri, 13 Feb 2004 11:47:30 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1ArgSE-0002Fy-00 for avt@ietf.org; Fri, 13 Feb 2004 11:46:16 -0500 Received: from david.siemens.de ([192.35.17.14]) by ietf-mx with esmtp (Exim 4.12) id 1ArgQA-0001md-00 for avt@ietf.org; Fri, 13 Feb 2004 11:44:06 -0500 Received: from mail3.siemens.de (mail3.siemens.de [139.25.208.14]) by david.siemens.de (8.11.7/8.11.7) with ESMTP id i1DGi6t19029 for ; Fri, 13 Feb 2004 17:44:06 +0100 (MET) Received: from blues.mchh.siemens.de (blues.mchh.siemens.de [139.21.204.206]) by mail3.siemens.de (8.11.7/8.11.7) with ESMTP id i1DGi5T09221 for ; Fri, 13 Feb 2004 17:44:05 +0100 (MET) Received: from mchh246e.mchh.siemens.de (mchh246e.mchh.siemens.de [139.21.200.56]) by blues.mchh.siemens.de (8.9.3/8.9.1) with ESMTP id RAA19235 for ; Fri, 13 Feb 2004 17:43:49 +0100 (MET) Received: by mchh246e.mchh.siemens.de with Internet Mail Service (5.5.2657.72) id <1Z5N8CTD>; Fri, 13 Feb 2004 17:44:05 +0100 Message-ID: From: Belling Thomas To: "'avt@ietf.org'" Cc: Oestreich Stefan Date: Fri, 13 Feb 2004 17:44:02 +0100 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C3F250.961A9B9C" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.2 required=5.0 tests=AWL,HTML_20_30,HTML_MESSAGE autolearn=no version=2.60 Subject: [AVT] Size of RTCP packets using IPv6 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01C3F250.961A9B9C Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi all, within the 3GPP there were some discussions about realistic sizes of = RTCP compound packets in an IPv6 Network. Apart from the IPv6/UDP header each packet contains at least a SR (52 = bytes) or RR (32 bytes), plus SDES package including a CNAME is also = mandated in each compound RTCP package. This includes a header of fixed = size (6 bytes), plus a "host" or "user@host" part of variable size.. The last part is tricky. According to RFC 1132 (which was written for = IPv4, not taking into account the larger IPv6 address space), "Host = software MUST handle host names of up to 63 characters and SHOULD = handle host names of up to 255 characters." Expressing a full IPv6 = address in ASCI notation also requires up to 39 characters. I assume = one should expect this part to be at least around 100 bytes. Other = opinions? There were also some ideas to restrict the recommended size of compound = RTCP packets to around 90 bytes (exluding IP/UDP), and optimise = transmission for such a size. I doubt this is a good idea: * My guess of a "minimum" size already exceeds this value. * translators and mixers should combine RTCP packets * A host should send only one RTCP compound packet by report interval, = because this is assumed in the bandwidth/frequency algorithms for = calculating the RTCP sending times. This implies the host should = combine any information it needs to send in this period within one = compoung packet. * Host may therefore need to combine several sender and receiver = reports (e.g. if multiple senders/receivers are involved, or multiple = media streams per host), or may need to add mandatory RTCP extension = packets defined in RTP profiles. Do you agree? Acoording to your experience, what are realsitic sizes of RTCP packets = with IPv6? Thank you for your help. Thomas Belling ---------------------------------- Dr. Thomas Belling Siemens AG =20 Sankt-Martin-Str. 76=20 D-81541 M=FCnchen Germany ICM N PG SP ST N1 MCH M 34 307 Tel +49 89 636 75207 Fax +49 89 636 75577 Mobile +49 172 2974678 Email Thomas.Belling@siemens.com ------_=_NextPart_001_01C3F250.961A9B9C Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Size of RTCP packets using IPv6

Hi all,


within the 3GPP there were some = discussions about realistic sizes of RTCP compound packets in an IPv6 = Network.

Apart from the IPv6/UDP header each = packet contains at least a SR (52 bytes) or RR (32 bytes), plus = SDES package including a CNAME is also mandated in = each compound RTCP package. This includes a header of fixed size (6 = bytes), plus a "host" or "user@host" part of variable size..

The last part is tricky. According to RFC 1132 = (which was written for IPv4, not taking into account the larger IPv6 = address space), "Host software MUST handle host names of up to 63 = characters and SHOULD handle host names of up to 255 characters." = Expressing a full IPv6 address in ASCI notation also requires up to 39 = characters. I assume one should expect this part to be at least around = 100 bytes. Other opinions?

There were also some ideas to restrict the = recommended size of compound RTCP packets to around 90 bytes (exluding = IP/UDP), and optimise transmission for such a size.

I doubt this is a good idea:

  • My guess of a "minimum" size = already exceeds this value.
  • translators and mixers should combine RTCP = packets
  • A host should send only one RTCP compound = packet by report interval, because this is assumed in the = bandwidth/frequency algorithms for calculating the RTCP sending times. = This implies the host should combine any information it needs to send = in this period within one compoung packet.
  • Host may therefore need to combine several = sender and receiver reports (e.g. if multiple senders/receivers are = involved, or multiple media streams per host), or may need to add = mandatory RTCP extension packets defined in RTP profiles.

Do you agree?


Acoording to your experience, what are = realsitic sizes of RTCP packets with IPv6?


Thank you for your help.

Thomas Belling





----------------------------------
Dr. Thomas Belling
Siemens = AG          
Sankt-Martin-Str. 76
D-81541 M=FCnchen = Germany
ICM N PG SP ST N1
MCH M 34 307
Tel     +49 = 89 636 75207
Fax     +49 = 89 636 75577
Mobile  +49 172 = 2974678
Email   = Thomas.Belling@siemens.com



------_=_NextPart_001_01C3F250.961A9B9C-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Fri Feb 13 16:10:34 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id QAA03782 for ; Fri, 13 Feb 2004 16:10:34 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArkZa-0003os-A3 for avt-archive@odin.ietf.org; Fri, 13 Feb 2004 16:10:06 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1DLA66N014648 for avt-archive@odin.ietf.org; Fri, 13 Feb 2004 16:10:06 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArkZX-0003nh-Bo; Fri, 13 Feb 2004 16:10:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArkZ8-0003mV-PY for avt@optimus.ietf.org; Fri, 13 Feb 2004 16:09:38 -0500 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id QAA03618; Fri, 13 Feb 2004 16:09:35 -0500 (EST) Message-Id: <200402132109.QAA03618@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: IETF-Announce: ; Cc: avt@ietf.org From: Internet-Drafts@ietf.org Reply-to: Internet-Drafts@ietf.org Date: Fri, 13 Feb 2004 16:09:35 -0500 Subject: [AVT] I-D ACTION:draft-ietf-avt-rfc2833bis-04.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Audio/Video Transport Working Group of the IETF. Title : RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals Author(s) : H. Schulzrinne, S. Petrack Filename : draft-ietf-avt-rfc2833bis-04.txt Pages : 77 Date : 2004-2-12 This memo describes how to carry dual-tone multifrequency (DTMF) signaling, other tone signals and telephony events in RTP packets. This document updates RFC 2833. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-avt-rfc2833bis-04.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-avt-rfc2833bis-04.txt". 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Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2004-2-13163007.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-avt-rfc2833bis-04.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-avt-rfc2833bis-04.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2004-2-13163007.I-D@ietf.org> --OtherAccess-- --NextPart-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Fri Feb 13 19:22:40 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id TAA16747 for ; Fri, 13 Feb 2004 19:22:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArnZV-0000w2-8g for avt-archive@odin.ietf.org; Fri, 13 Feb 2004 19:22:13 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1E0MDKL003543 for avt-archive@odin.ietf.org; Fri, 13 Feb 2004 19:22:13 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArnZK-0000te-4U; Fri, 13 Feb 2004 19:22:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArnYc-0000t6-FV for avt@optimus.ietf.org; Fri, 13 Feb 2004 19:21:18 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id TAA16708 for ; Fri, 13 Feb 2004 19:21:14 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1ArnYa-0004bc-00 for avt@ietf.org; Fri, 13 Feb 2004 19:21:16 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1ArnXc-0004Xu-00 for avt@ietf.org; Fri, 13 Feb 2004 19:20:17 -0500 Received: from relay2.eecs.berkeley.edu ([169.229.60.28]) by ietf-mx with esmtp (Exim 4.12) id 1ArnWp-0004V4-00 for avt@ietf.org; Fri, 13 Feb 2004 19:19:27 -0500 Received: from relay3.EECS.Berkeley.EDU (localhost [127.0.0.1]) by relay2.EECS.Berkeley.EDU (8.12.10/8.9.3) with ESMTP id i1E0JQwL001711 for ; Fri, 13 Feb 2004 16:19:27 -0800 (PST) Received: from gateway.EECS.Berkeley.EDU (nsmail@gateway.EECS.Berkeley.EDU [169.229.60.73]) by relay3.EECS.Berkeley.EDU (8.12.10/8.9.3) with ESMTP id i1E0JQFU022497 for ; Fri, 13 Feb 2004 16:19:26 -0800 (PST) Received: from [128.32.34.73] (dhcp-34-73.CS.Berkeley.EDU [128.32.34.73]) by gateway.EECS.Berkeley.EDU (Netscape Messaging Server 4.15) with ESMTP id HT1SWC00.7MF for ; Fri, 13 Feb 2004 16:19:24 -0800 Mime-Version: 1.0 (Apple Message framework v612) Content-Transfer-Encoding: 7bit Message-Id: <70C0994F-5E83-11D8-B2B7-00039372C384@eecs.berkeley.edu> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed To: avt@ietf.org From: "John Lazzaro" Date: Fri, 13 Feb 2004 16:19:23 -0800 X-Mailer: Apple Mail (2.612) X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.3 required=5.0 tests=AWL,SUBJ_ALL_CAPS autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] RTP MIDI ... Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit > On Fri, 30 Jan 2004 10:27:13 -0800 John Lazzaro wrote: > > Tentatively, the plan for the RTP MIDI documents is to wait until > the 12th of February for comments, then spend the next four > days updating the documents to submit -02.txt versions in time > for the Feb 16th deadline. At the very least, -02.txt will be adjusted > for the new Offer/Answer requirements. > > So, it would be ideal if folks who were interested in RTP > MIDI could find the time to do a read-through and send along > comments by Feb 12. If that's not possible, it would be good to > know that there were folks who were planning to send in > comments but needed more time to read them ... thanks, Plans have changed -- a few folks from the MMA asked for 6 weeks to read over the candidate Last Call -01.txt documents. So -01.txt are the Seoul RTP MIDI documents. No one from the IETF side of the house has sent in comments -- I'm assuming people are too busy at the moment working on their own documents. Once the smoke clears, please consider reading over: http://www1.ietf.org/internet-drafts/draft-ietf-avt-rtp-midi-format -01.txt http://www1.ietf.org/internet-drafts/draft-ietf-avt-rtp-midi- guidelines-01.txt and sending in reviews, it would be great if post-Seoul, I could combine IETF and MMA reviews and produce -02.txt documents that are ready for Last Call. Thanks! --- John Lazzaro http://www.cs.berkeley.edu/~lazzaro lazzaro [at] cs [dot] berkeley [dot] edu --- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sat Feb 14 05:07:38 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA13882 for ; Sat, 14 Feb 2004 05:07:38 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Arwha-0006GC-Mb for avt-archive@odin.ietf.org; Sat, 14 Feb 2004 05:07:11 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1EA7ADg024006 for avt-archive@odin.ietf.org; Sat, 14 Feb 2004 05:07:10 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1ArwhR-0006Cj-NW; Sat, 14 Feb 2004 05:07:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Arwh9-0006Bw-Vq for avt@optimus.ietf.org; Sat, 14 Feb 2004 05:06:44 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA13837 for ; Sat, 14 Feb 2004 05:06:41 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Arwh6-0001XV-00 for avt@ietf.org; Sat, 14 Feb 2004 05:06:40 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Arwg8-0001U2-00 for avt@ietf.org; Sat, 14 Feb 2004 05:05:41 -0500 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47]) by ietf-mx with esmtp (Exim 4.12) id 1Arwfq-0001QH-00 for avt@ietf.org; Sat, 14 Feb 2004 05:05:22 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by penguin-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1EA5MYG024003 for ; Sat, 14 Feb 2004 11:05:22 +0100 (MET) Received: from esealnt611.al.sw.ericsson.se ([153.88.254.121]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Sat, 14 Feb 2004 11:05:22 +0100 Received: from ericsson.com (sealwp02-132.sw.ericsson.se [153.88.142.132]) by esealnt611.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 166ANTSY; Sat, 14 Feb 2004 11:05:24 +0100 Message-ID: <402DF259.2070206@ericsson.com> Date: Sat, 14 Feb 2004 11:03:05 +0100 X-Sybari-Trust: a973d987 c77f3eb6 787eb308 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: avt@ietf.org CC: Colin Perkins Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 14 Feb 2004 10:05:22.0745 (UTC) FILETIME=[0F2A0A90:01C3F2E2] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Publishing draft-ietf-avt-rtp-retransmission-10.txt as Proposed standard Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, In november and December we had discussion about the IPR situation for the RTP retransmission document. We chairs interprets the situation to be rough consensus, with some voices raised against, for having it published as a proposed standard. The last revision (number 10) addresses the comment of clarifying that the solution is encumbered through a note in the introduction plus correct IPR statements in the document and on the IETF IPR page. We are therefore now going to request that this document is advanced toward proposed standard. Best Regards Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. 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E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sun Feb 15 21:41:40 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id VAA10148 for ; Sun, 15 Feb 2004 21:41:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AsYh7-0001oC-7U for avt-archive@odin.ietf.org; Sun, 15 Feb 2004 21:41:13 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1G2fDZP006901 for avt-archive@odin.ietf.org; Sun, 15 Feb 2004 21:41:13 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AsYgx-0001mM-AK; Sun, 15 Feb 2004 21:41:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AsYfy-0001js-6B for avt@optimus.ietf.org; Sun, 15 Feb 2004 21:40:02 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id VAA10088 for ; Sun, 15 Feb 2004 21:39:59 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AsYfv-0004H2-00 for avt@ietf.org; Sun, 15 Feb 2004 21:39:59 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AsYex-0004Cf-00 for avt@ietf.org; Sun, 15 Feb 2004 21:39:00 -0500 Received: from zcars04e.nortelnetworks.com ([47.129.242.56]) by ietf-mx with esmtp (Exim 4.12) id 1AsYe2-00046E-00 for avt@ietf.org; Sun, 15 Feb 2004 21:38:02 -0500 Received: from zcard307.ca.nortel.com (zcard307.ca.nortel.com [47.129.242.67]) by zcars04e.nortelnetworks.com (Switch-2.2.6/Switch-2.2.0) with ESMTP id i1G2bQn27252 for ; Sun, 15 Feb 2004 21:37:26 -0500 (EST) Received: from zcard0kc.ca.nortel.com ([47.129.242.164]) by zcard307.ca.nortel.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id 1FN1CF7G; Sun, 15 Feb 2004 21:37:26 -0500 Received: from nortelnetworks.com (acart1h2.ca.nortel.com [47.129.129.210]) by zcard0kc.ca.nortel.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id DBDZJHPF; Sun, 15 Feb 2004 21:37:27 -0500 Message-ID: <40302CE2.9000700@nortelnetworks.com> Date: Sun, 15 Feb 2004 21:37:22 -0500 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: Tom Taylor User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6b) Gecko/20031205 Thunderbird/0.4 X-Accept-Language: en-us, en MIME-Version: 1.0 To: avt@ietf.org Subject: Re: [AVT] I-D ACTION:draft-ietf-avt-rfc2833bis-04.txt References: <200402132109.QAA03618@ietf.org> In-Reply-To: <200402132109.QAA03618@ietf.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit This draft has a lot of new material about the events previously defined, plus a few new data events. A bunch of normative text was added. I hope it doesn't contradict current practice -- it was added in response to questions Flemming Andreason had way back last spring. We had intended that Henning give it his blessing before it went out, but he has been too busy. So anything that doesn't look right is my responsibility. Please let me know about it. I'll be setting up the IANA registry mentioned in the document. Tom Taylor Internet-Drafts@ietf.org wrote: > A New Internet-Draft is available from the on-line Internet-Drafts directories. > This draft is a work item of the Audio/Video Transport Working Group of the IETF. > > Title : RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals > Author(s) : H. Schulzrinne, S. Petrack > Filename : draft-ietf-avt-rfc2833bis-04.txt > Pages : 77 > Date : 2004-2-12 > > This memo describes how to carry dual-tone multifrequency (DTMF) > signaling, other tone signals and telephony events in RTP packets. > This document updates RFC 2833. > > A URL for this Internet-Draft is: > http://www.ietf.org/internet-drafts/draft-ietf-avt-rfc2833bis-04.txt > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 16 09:04:39 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA18972 for ; Mon, 16 Feb 2004 09:04:39 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AsjM3-0000Cu-BY for avt-archive@odin.ietf.org; Mon, 16 Feb 2004 09:04:11 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1GE4BR7000795 for avt-archive@odin.ietf.org; Mon, 16 Feb 2004 09:04:11 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AsjLu-0000CF-Hj; Mon, 16 Feb 2004 09:04:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AsjLG-00005x-2E for avt@optimus.ietf.org; Mon, 16 Feb 2004 09:03:22 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA18913 for ; Mon, 16 Feb 2004 09:03:19 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AsjLE-0006Kx-00 for avt@ietf.org; Mon, 16 Feb 2004 09:03:20 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AsjKT-0006IF-00 for avt@ietf.org; Mon, 16 Feb 2004 09:02:33 -0500 Received: from eagle.ericsson.se ([193.180.251.53]) by ietf-mx with esmtp (Exim 4.12) id 1AsjJy-0006Df-00 for avt@ietf.org; Mon, 16 Feb 2004 09:02:02 -0500 Received: from esealmw142.al.sw.ericsson.se ([153.88.254.119]) by eagle.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1GE21Ah019746 for ; Mon, 16 Feb 2004 15:02:01 +0100 Received: from esealnt610.al.sw.ericsson.se ([153.88.254.120]) by esealmw142.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Mon, 16 Feb 2004 15:02:01 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt610.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 1LJH0175; Mon, 16 Feb 2004 15:03:15 +0100 Message-ID: <4030CD57.7030009@ericsson.com> Date: Mon, 16 Feb 2004 15:01:59 +0100 X-Sybari-Trust: 7056ce2e c77f3eb6 787eb308 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: avt@ietf.org CC: Colin Perkins Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 16 Feb 2004 14:02:01.0314 (UTC) FILETIME=[72FF3C20:01C3F495] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] WG agenda time Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, If you haven't yet submitted a request for WG agenda, please do so as soon as possible. We will accept them until midnight (24.00 GMT). Submitting a draft before the deadline, is not sufficient to receive any time on the AVT WG session agenda time. The request shall be sent to both us chairs. In the request include the following information: A. Presentation Title: B. Name of presenter: C. Draft Reference(s): D. Requested amount of time in minutes: Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 16 09:28:31 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA19956 for ; Mon, 16 Feb 2004 09:28:31 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Asjj9-0001fz-1I for avt-archive@odin.ietf.org; Mon, 16 Feb 2004 09:28:03 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1GES2p2006379 for avt-archive@odin.ietf.org; Mon, 16 Feb 2004 09:28:02 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Asjj7-0001du-Pn; Mon, 16 Feb 2004 09:28:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AshT3-00081k-3c for avt@optimus.ietf.org; Mon, 16 Feb 2004 07:03:22 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA13055 for ; Mon, 16 Feb 2004 07:03:12 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AshSy-0006Jj-00 for avt@ietf.org; Mon, 16 Feb 2004 07:03:12 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AshS2-0006HB-00 for avt@ietf.org; Mon, 16 Feb 2004 07:02:15 -0500 Received: from sj-iport-4.cisco.com ([171.68.10.86]) by ietf-mx with esmtp (Exim 4.12) id 1AshRY-0006B9-00; Mon, 16 Feb 2004 07:01:44 -0500 Received: from cisco.com (mrwint.cisco.com [64.103.71.48]) by ams-msg-core-1.cisco.com (8.12.10/8.12.6) with ESMTP id i1GC0ZhQ018159; Mon, 16 Feb 2004 13:00:35 +0100 (MET) Received: from cisco.com (rtp-vpn2-22.cisco.com [10.82.240.22]) by cisco.com (8.8.8/2.6/Cisco List Logging/8.8.8) with ESMTP id MAA18243; Mon, 16 Feb 2004 12:00:29 GMT Message-ID: <4030B0DB.5060508@cisco.com> Date: Mon, 16 Feb 2004 12:00:27 +0000 From: Stewart Bryant Reply-To: stbryant@cisco.com Organization: Cisco Systems, Inc. User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Curtis Villamizar CC: avt@ietf.org, "pwe3@ietf.org" References: <200402091628.i19GSwRa084489@workhorse.fictitious.org> In-Reply-To: <200402091628.i19GSwRa084489@workhorse.fictitious.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Re: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit There are some operations that need to be able to distinguish between IP and non-IP MPLS payloads. For example a router performing ECMP based on the IP addresses or other information in the IP header, or an IPFIX/PSAMP packet sampling system that needs to analyse the payload contents. We identified this need in PWE3 and proposed a solution. This is described in sections 5.4.3 and 5.4.4 of the PWE3 Architecture draft: http://www.ietf.org/internet-drafts/draft-ietf-pwe3-arch-06.txt In essence we proposed that the nibble that immediately follows the MPLS bottom label has the following semantics: Value Meaning 0 PWE3 payload* 1 Identified payload type (see below) 4 IPv4 6 IPv6 * It might be argued that this should be changed to mean "unidentified payload type" The identified payload type above is the first nibble in a longword with the following definition: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |0 0 0 1| reserved = 0 | PA | Protocol ID | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | As defined by PPP DLL protocol definition | | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 14: PWE3 PID The meaning of the fields of the PWE3 PID (Figure 14) is as follows: PA protocol authority for the user plane or the control plane protocol ID 0 = PPP DLL 1-15 = Reserved Protocol ID Protocol ID following the format defined by the protocol authority identified in PA. Bits 4 to 11 inclusive are reserved for future use and must be zero. PWE3 currently describes this in terms of historic IP version numbers, but IESG feedback is that we need to use a new registry. The proposal is that there is a new "nibble that follows the MPLS label" registry. This will still have the values and semantics described above. A new draft describing this will be submitted when the IETF embargo on new drafts lifts, and the PWE3 architecture draft modified accordingly. Note that this does not change the existing PWE3 protocol or headers, just the way that we describe the protocol. If this proposal gains approval, the implication for ecrtp-over-mpls would be that it should either: 1) Run under first nibble 0 2) Run under first nibble 1 with an ecrtp-over-mpls as the PPP-DLL value 3) Request a first nibble value from the new registry - Stewart Curtis Villamizar wrote: > ------- Blind-Carbon-Copy > > To: "Ash, Gerald R (Jerry), ALABS" > cc: avt@ietf.org > Reply-To: curtis@fictitious.org > Subject: Re: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt > In-reply-to: Your message of "Mon, 09 Feb 2004 07:39:42 CST." > <9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> > Date: Mon, 09 Feb 2004 11:28:58 -0500 > From: Curtis Villamizar > > > In message <9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> > , "Ash, Gerald R (Jerry), ALABS" writes: > >>All, >> >>Please review and comment on 'Protocol Extensions for ECRTP over MPLS' http:/ >>/www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protocol-00.txt. >> The protocol extensions enable the use of MPLS to route enhanced compressed >>RTP (ECRTP) compressed packets over an MPLS LSP without compression/decompres >>sion cycles at each router. >> >>The proposed extensions are based on the requirements documented in 'Requirem >>ents for ECRTP over MPLS' http://www.ietf.org/internet-drafts/draft-ash-avt-e >>crtp-over-mpls-reqs-01.txt. >> >>Thanks, >>Jerry >> >> >> Title : Protocol Extensions for ECRTP over MPLS >> Author(s) : J. Ash >> Filename : draft-ash-avt-ecrtp-over-mpls-protocol-00.txt >> Pages : 0 >> Date : 2004-2-5 > > > > Jerry, > > This looks to be a very good direction to go in. I've dropped MPLS > from the Cc and put MPLS on the bcc so people know the discussion is > on the AVT mailing list only. > > In your encapsulations you should make sure to avoid any values in the > first byte that could be mistaken as IPv4 or IPv6 or any of the > encapsulations being worked on by those working on VPN and PW. See > "The PWE3 Control Word", Jonathan Stein, 22-Oct-02, > draft-stein-pwe3-controlword-00.txt, for some early discussion on > that. Note though that "Payload Type" is something that many > providers require so that multipath can be used on IP traffic which > consitutes the majority of traffic yet reordering is avoided for > traffic which cannot be split based on what appears to be an IP header > and the IP src/dst pair. > > It might be best to reserve a single fixed first byte for the "Packet > Type" (and I suggest you make up a name for this shim such as > SCID_Packet_Type) and use the second byte for the packet types that > you have defined. Just as you have to get numbers for SCID_Request > Object and Header_Compression_Reply Object from IANA, you'll have to > coordinate with others over this number space, though it is less clear > if IANA is the authority on this quite yet. > > Curtis > > ------- End of Blind-Carbon-Copy > > > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 16 09:28:34 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA19987 for ; Mon, 16 Feb 2004 09:28:34 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AsjjD-0001ia-4a for avt-archive@odin.ietf.org; Mon, 16 Feb 2004 09:28:07 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1GES7dS006587 for avt-archive@odin.ietf.org; Mon, 16 Feb 2004 09:28:07 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AsjjA-0001hW-73; Mon, 16 Feb 2004 09:28:04 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AsiTs-0004Fp-TM for avt@optimus.ietf.org; Mon, 16 Feb 2004 08:08:12 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id IAA15306 for ; Mon, 16 Feb 2004 08:08:11 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AsiTr-00026k-00 for avt@ietf.org; Mon, 16 Feb 2004 08:08:11 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AsiSv-00024K-00 for avt@ietf.org; Mon, 16 Feb 2004 08:07:14 -0500 Received: from sj-iport-5.cisco.com ([171.68.10.87]) by ietf-mx with esmtp (Exim 4.12) id 1AsiSW-00021X-00; Mon, 16 Feb 2004 08:06:49 -0500 Received: from ams-msg-core-1.cisco.com (144.254.74.60) by sj-iport-5.cisco.com with ESMTP; 16 Feb 2004 05:06:32 -0800 Received: from cisco.com (mrwint.cisco.com [64.103.71.48]) by ams-msg-core-1.cisco.com (8.12.10/8.12.6) with ESMTP id i1GD5ohQ005157; Mon, 16 Feb 2004 14:05:50 +0100 (MET) Received: from cisco.com (rtp-vpn2-22.cisco.com [10.82.240.22]) by cisco.com (8.8.8/2.6/Cisco List Logging/8.8.8) with ESMTP id NAA20106; Mon, 16 Feb 2004 13:06:12 GMT Message-ID: <4030C043.3030509@cisco.com> Date: Mon, 16 Feb 2004 13:06:11 +0000 From: Stewart Bryant Reply-To: stbryant@cisco.com Organization: Cisco Systems, Inc. User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Sasha Vainshtein CC: avt@ietf.org, pwe3@ietf.org, Curtis Villamizar References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Re: [PWE3] Re: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol- 00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Sasha Vainshtein wrote: > Stewart and all, > > I am not sure I understand the idea about the new registry. > ECMP safety of the "generic" CW is based on the fact that > value 0 is not used in the "protocol versions" registry, and > the decision to swap the CW and RTP header in TDM PWs over MPLS > has been based on value 8 (that is what the nibble in question is > in the RTP header) has been allocated for something called PIP in this > registry even if it probably has never been used. The protocol (and values) will stay the same. We are only talking about the way that we formally describe the protocol. The issue was that the IESG did not like PWE3 changing the IP version registry, but our incomming AD thought that a new registry, as described, would be more acceptable. > > If we go for the new registry, what is going to happen if somebody, > at some time, decides to allocate value 4 (or, in fact, any value between 4 > and 9) in it? Do we expect IANA to maintain the linkage between the > two seemingly unrelated registries? 4 and 6 will be preallocated, so that they do not get trodden on. We need to find out if there is any use of 5, 7, 8 and 9. I.e. are there any routers in the Internet that carry IP versions 5, 7, 8 or 9 over MPLS. If there are, we need to include them in the registry as pre-allocated values. If not, then a new implementation would need to operate under the rules proposed below (i.e. run under 0, 1 or their own value). The IESG would advise IANA on the usage of this registry. - Stewart > > With best regards, > Sasha Vainshtein > email: sasha@axerra.com > tel: +972-3-7659993 (office) > +972-8-9254948 (res.) > +972-58-674833 (cell.) > > > > >>-----Original Message----- >>From: Stewart Bryant [mailto:stbryant@cisco.com] >>Sent: Monday, February 16, 2004 2:00 PM >>To: Curtis Villamizar >>Cc: avt@ietf.org; pwe3@ietf.org >>Subject: [PWE3] Re: I-D >>ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt >> >> >> >>There are some operations that need to be able to distinguish >>between IP and non-IP MPLS payloads. For example a router >>performing ECMP based on the IP addresses or other information >>in the IP header, or an IPFIX/PSAMP packet sampling system >>that needs to analyse the payload contents. >> >>We identified this need in PWE3 and proposed a solution. This >>is described in sections 5.4.3 and 5.4.4 of the PWE3 Architecture >>draft: >> >>http://www.ietf.org/internet-drafts/draft-ietf-pwe3-arch-06.txt >> >>In essence we proposed that the nibble that immediately follows >>the MPLS bottom label has the following semantics: >> >>Value Meaning >>0 PWE3 payload* >>1 Identified payload type (see below) >>4 IPv4 >>6 IPv6 >> >>* It might be argued that this should be changed to mean >>"unidentified payload type" >> >>The identified payload type above is the first nibble >>in a longword with the following definition: >> >> 0 1 2 3 >> 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 >>7 8 9 0 1 >> >>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >> |0 0 0 1| reserved = 0 | PA | Protocol ID >> | >> >>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >> | As defined by PPP DLL protocol definition >> | >> | >> | >> >>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >> >> Figure 14: PWE3 PID >> >> The meaning of the fields of the PWE3 PID (Figure 14) is >>as follows: >> >> >> PA protocol authority for the user plane or the >>control plane >> protocol ID >> 0 = PPP DLL >> 1-15 = Reserved >> >> Protocol ID >> Protocol ID following the format defined by the protocol >> authority identified in PA. >> >> Bits 4 to 11 inclusive are reserved for future use and >>must be zero. >> >>PWE3 currently describes this in terms of historic IP version numbers, >>but IESG feedback is that we need to use a new registry. >> >>The proposal is that there is a new "nibble that follows the MPLS >>label" registry. This will still have the values and >>semantics described >>above. A new draft describing this will be submitted when the IETF >>embargo on new drafts lifts, and the PWE3 architecture draft modified >>accordingly. Note that this does not change the existing PWE3 protocol >>or headers, just the way that we describe the protocol. >> >>If this proposal gains approval, the implication for ecrtp-over-mpls >>would be that it should either: >> >>1) Run under first nibble 0 >>2) Run under first nibble 1 with an ecrtp-over-mpls as the >>PPP-DLL value >>3) Request a first nibble value from the new registry >> >>- Stewart >> >> >>Curtis Villamizar wrote: >> >> >>>------- Blind-Carbon-Copy >>> >>>To: "Ash, Gerald R (Jerry), ALABS" >>>cc: avt@ietf.org >>>Reply-To: curtis@fictitious.org >>>Subject: Re: I-D >> >>ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt >> >>>In-reply-to: Your message of "Mon, 09 Feb 2004 07:39:42 CST." >>> >> >><9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> >> >>>Date: Mon, 09 Feb 2004 11:28:58 -0500 >>>From: Curtis Villamizar >>> >>> >>>In message >> >><9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> >> >>>, "Ash, Gerald R (Jerry), ALABS" writes: >>> >>> >>>>All, >>>> >>>>Please review and comment on 'Protocol Extensions for ECRTP >> >>over MPLS' http:/ >> >>>>/www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls- >> >>protocol-00.txt. >> >>>>The protocol extensions enable the use of MPLS to route >> >>enhanced compressed >> >>>>RTP (ECRTP) compressed packets over an MPLS LSP without >> >>compression/decompres >> >>>>sion cycles at each router. >>>> >>>>The proposed extensions are based on the requirements >> >>documented in 'Requirem >> >>>>ents for ECRTP over MPLS' >> >>http://www.ietf.org/internet-drafts/draft-ash-avt-e >> >>>>crtp-over-mpls-reqs-01.txt. >>>> >>>>Thanks, >>>>Jerry >>>> >>>> >>>> Title : Protocol Extensions for ECRTP over MPLS >>>> Author(s) : J. Ash >>>> Filename : draft-ash-avt-ecrtp-over-mpls-protocol-00.txt >>>> Pages : 0 >>>> Date : 2004-2-5 >>> >>> >>> >>>Jerry, >>> >>>This looks to be a very good direction to go in. I've dropped MPLS >>>from the Cc and put MPLS on the bcc so people know the discussion is >>>on the AVT mailing list only. >>> >>>In your encapsulations you should make sure to avoid any >> >>values in the >> >>>first byte that could be mistaken as IPv4 or IPv6 or any of the >>>encapsulations being worked on by those working on VPN and PW. See >>>"The PWE3 Control Word", Jonathan Stein, 22-Oct-02, >>>draft-stein-pwe3-controlword-00.txt, for some early discussion on >>>that. Note though that "Payload Type" is something that many >>>providers require so that multipath can be used on IP traffic which >>>consitutes the majority of traffic yet reordering is avoided for >>>traffic which cannot be split based on what appears to be >> >>an IP header >> >>>and the IP src/dst pair. >>> >>>It might be best to reserve a single fixed first byte for >> >>the "Packet >> >>>Type" (and I suggest you make up a name for this shim such as >>>SCID_Packet_Type) and use the second byte for the packet types that >>>you have defined. Just as you have to get numbers for SCID_Request >>>Object and Header_Compression_Reply Object from IANA, you'll have to >>>coordinate with others over this number space, though it is >> >>less clear >> >>>if IANA is the authority on this quite yet. >>> >>>Curtis >>> >>>------- End of Blind-Carbon-Copy >>> >>> >>> >> >> >>_______________________________________________ >>pwe3 mailing list >>pwe3@ietf.org >>https://www1.ietf.org/mailman/listinfo/pwe3 >> > > > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 16 10:14:37 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA19959 for ; Mon, 16 Feb 2004 09:28:31 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Asjj9-0001hL-L4 for avt-archive@odin.ietf.org; Mon, 16 Feb 2004 09:28:03 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1GES21A006403 for avt-archive@odin.ietf.org; Mon, 16 Feb 2004 09:28:02 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Asjj8-0001ek-MH; Mon, 16 Feb 2004 09:28:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Ashu3-0001y7-I5 for avt@optimus.ietf.org; Mon, 16 Feb 2004 07:31:11 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA13909 for ; Mon, 16 Feb 2004 07:31:10 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Ashu2-0000CL-00 for avt@ietf.org; Mon, 16 Feb 2004 07:31:10 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Asht4-00009Y-00 for avt@ietf.org; Mon, 16 Feb 2004 07:30:11 -0500 Received: from [80.74.100.67] (helo=antivir2) by ietf-mx with smtp (Exim 4.12) id 1Ashs9-00005f-00; Mon, 16 Feb 2004 07:29:13 -0500 Received: from 192.168.254.14 by antivir2 (InterScan E-Mail VirusWall NT); Mon, 16 Feb 2004 14:28:14 +0200 Received: by TLV1 with Internet Mail Service (5.5.2653.19) id ; Mon, 16 Feb 2004 14:26:08 +0200 Message-ID: From: Sasha Vainshtein To: "'stbryant@cisco.com'" Cc: avt@ietf.org, pwe3@ietf.org, Curtis Villamizar Date: Mon, 16 Feb 2004 14:26:08 +0200 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="ISO-8859-8" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.3 required=5.0 tests=AWL autolearn=no version=2.60 Subject: [AVT] RE: [PWE3] Re: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol- 00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Stewart and all, I am not sure I understand the idea about the new registry. ECMP safety of the "generic" CW is based on the fact that value 0 is not used in the "protocol versions" registry, and the decision to swap the CW and RTP header in TDM PWs over MPLS has been based on value 8 (that is what the nibble in question is in the RTP header) has been allocated for something called PIP in this registry even if it probably has never been used. If we go for the new registry, what is going to happen if somebody, at some time, decides to allocate value 4 (or, in fact, any value between 4 and 9) in it? Do we expect IANA to maintain the linkage between the two seemingly unrelated registries? With best regards, Sasha Vainshtein email: sasha@axerra.com tel: +972-3-7659993 (office) +972-8-9254948 (res.) +972-58-674833 (cell.) > -----Original Message----- > From: Stewart Bryant [mailto:stbryant@cisco.com] > Sent: Monday, February 16, 2004 2:00 PM > To: Curtis Villamizar > Cc: avt@ietf.org; pwe3@ietf.org > Subject: [PWE3] Re: I-D > ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt > > > > There are some operations that need to be able to distinguish > between IP and non-IP MPLS payloads. For example a router > performing ECMP based on the IP addresses or other information > in the IP header, or an IPFIX/PSAMP packet sampling system > that needs to analyse the payload contents. > > We identified this need in PWE3 and proposed a solution. This > is described in sections 5.4.3 and 5.4.4 of the PWE3 Architecture > draft: > > http://www.ietf.org/internet-drafts/draft-ietf-pwe3-arch-06.txt > > In essence we proposed that the nibble that immediately follows > the MPLS bottom label has the following semantics: > > Value Meaning > 0 PWE3 payload* > 1 Identified payload type (see below) > 4 IPv4 > 6 IPv6 > > * It might be argued that this should be changed to mean > "unidentified payload type" > > The identified payload type above is the first nibble > in a longword with the following definition: > > 0 1 2 3 > 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 > 7 8 9 0 1 > > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > |0 0 0 1| reserved = 0 | PA | Protocol ID > | > > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > | As defined by PPP DLL protocol definition > | > | > | > > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > > Figure 14: PWE3 PID > > The meaning of the fields of the PWE3 PID (Figure 14) is > as follows: > > > PA protocol authority for the user plane or the > control plane > protocol ID > 0 = PPP DLL > 1-15 = Reserved > > Protocol ID > Protocol ID following the format defined by the protocol > authority identified in PA. > > Bits 4 to 11 inclusive are reserved for future use and > must be zero. > > PWE3 currently describes this in terms of historic IP version numbers, > but IESG feedback is that we need to use a new registry. > > The proposal is that there is a new "nibble that follows the MPLS > label" registry. This will still have the values and > semantics described > above. A new draft describing this will be submitted when the IETF > embargo on new drafts lifts, and the PWE3 architecture draft modified > accordingly. Note that this does not change the existing PWE3 protocol > or headers, just the way that we describe the protocol. > > If this proposal gains approval, the implication for ecrtp-over-mpls > would be that it should either: > > 1) Run under first nibble 0 > 2) Run under first nibble 1 with an ecrtp-over-mpls as the > PPP-DLL value > 3) Request a first nibble value from the new registry > > - Stewart > > > Curtis Villamizar wrote: > > > ------- Blind-Carbon-Copy > > > > To: "Ash, Gerald R (Jerry), ALABS" > > cc: avt@ietf.org > > Reply-To: curtis@fictitious.org > > Subject: Re: I-D > ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt > > In-reply-to: Your message of "Mon, 09 Feb 2004 07:39:42 CST." > > > <9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> > > Date: Mon, 09 Feb 2004 11:28:58 -0500 > > From: Curtis Villamizar > > > > > > In message > <9473683187ADC049A855ED2DA739ABCA0201F057@KCCLUST06EVS1.ugd.att.com> > > , "Ash, Gerald R (Jerry), ALABS" writes: > > > >>All, > >> > >>Please review and comment on 'Protocol Extensions for ECRTP > over MPLS' http:/ > >>/www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls- > protocol-00.txt. > >> The protocol extensions enable the use of MPLS to route > enhanced compressed > >>RTP (ECRTP) compressed packets over an MPLS LSP without > compression/decompres > >>sion cycles at each router. > >> > >>The proposed extensions are based on the requirements > documented in 'Requirem > >>ents for ECRTP over MPLS' > http://www.ietf.org/internet-drafts/draft-ash-avt-e > >>crtp-over-mpls-reqs-01.txt. > >> > >>Thanks, > >>Jerry > >> > >> > >> Title : Protocol Extensions for ECRTP over MPLS > >> Author(s) : J. Ash > >> Filename : draft-ash-avt-ecrtp-over-mpls-protocol-00.txt > >> Pages : 0 > >> Date : 2004-2-5 > > > > > > > > Jerry, > > > > This looks to be a very good direction to go in. I've dropped MPLS > > from the Cc and put MPLS on the bcc so people know the discussion is > > on the AVT mailing list only. > > > > In your encapsulations you should make sure to avoid any > values in the > > first byte that could be mistaken as IPv4 or IPv6 or any of the > > encapsulations being worked on by those working on VPN and PW. See > > "The PWE3 Control Word", Jonathan Stein, 22-Oct-02, > > draft-stein-pwe3-controlword-00.txt, for some early discussion on > > that. Note though that "Payload Type" is something that many > > providers require so that multipath can be used on IP traffic which > > consitutes the majority of traffic yet reordering is avoided for > > traffic which cannot be split based on what appears to be > an IP header > > and the IP src/dst pair. > > > > It might be best to reserve a single fixed first byte for > the "Packet > > Type" (and I suggest you make up a name for this shim such as > > SCID_Packet_Type) and use the second byte for the packet types that > > you have defined. Just as you have to get numbers for SCID_Request > > Object and Header_Compression_Reply Object from IANA, you'll have to > > coordinate with others over this number space, though it is > less clear > > if IANA is the authority on this quite yet. > > > > Curtis > > > > ------- End of Blind-Carbon-Copy > > > > > > > > > _______________________________________________ > pwe3 mailing list > pwe3@ietf.org > https://www1.ietf.org/mailman/listinfo/pwe3 > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 17 04:55:55 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA21142 for ; Tue, 17 Feb 2004 04:55:55 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At1wt-0003Io-OI for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 04:55:27 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1H9tRtj012529 for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 04:55:27 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At1wa-0003DQ-Ts; Tue, 17 Feb 2004 04:55:08 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AslTY-0002Mk-NZ for avt@optimus.ietf.org; Mon, 16 Feb 2004 11:20:04 -0500 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA00239 for ; Mon, 16 Feb 2004 11:20:02 -0500 (EST) Received: from nobody by optimus.ietf.org with local (Exim 4.20) id 1AslT4-0002Kv-2L; Mon, 16 Feb 2004 11:19:34 -0500 X-test-idtracker: no To: IETF-Announce :; From: The IESG Reply-to: iesg@ietf.org Message-Id: Date: Mon, 16 Feb 2004 11:19:34 -0500 Subject: [AVT] Last Call: 'Tunneling multiplexed Compressed RTP ('TCRTP')' to BCP Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , The IESG has received a request from the Audio/Video Transport WG to conside the following document: - 'Tunneling multiplexed Compressed RTP ('TCRTP') ' as a BCP The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send any comments to the iesg@ietf.org or ietf@ietf.org mailing lists by 2004-03-12. The file can be obtained via http://www.ietf.org/internet-drafts/draft-ietf-avt-tcrtp-07.txt _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 17 04:55:59 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA21159 for ; Tue, 17 Feb 2004 04:55:59 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At1wt-0003Ir-Qk for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 04:55:30 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1H9tRn2012528 for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 04:55:27 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At1wW-0003Cz-Ln; Tue, 17 Feb 2004 04:55:04 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AskR6-0001Dn-IT for avt@optimus.ietf.org; Mon, 16 Feb 2004 10:13:28 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA22541 for ; Mon, 16 Feb 2004 10:13:25 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AskR4-0002eR-00 for avt@ietf.org; Mon, 16 Feb 2004 10:13:26 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AskQB-0002ax-00 for avt@ietf.org; Mon, 16 Feb 2004 10:12:31 -0500 Received: from workhorse.fictitious.org ([209.150.1.230]) by ietf-mx with esmtp (Exim 4.12) id 1AskPf-0002XP-00; Mon, 16 Feb 2004 10:12:00 -0500 Received: from workhorse.fictitious.org (localhost.fictitious.org [127.0.0.1]) by workhorse.fictitious.org (8.12.9p2/8.12.8) with ESMTP id i1GF8ORX038352; Mon, 16 Feb 2004 10:08:24 -0500 (EST) (envelope-from curtis@workhorse.fictitious.org) Message-Id: <200402161508.i1GF8ORX038352@workhorse.fictitious.org> To: stbryant@cisco.com cc: Sasha Vainshtein , avt@ietf.org, pwe3@ietf.org, Curtis Villamizar Reply-To: curtis@fictitious.org In-reply-to: Your message of "Mon, 16 Feb 2004 13:06:11 GMT." <4030C043.3030509@cisco.com> Date: Mon, 16 Feb 2004 10:08:24 -0500 From: Curtis Villamizar X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Subject: [AVT] Re: [PWE3] Re: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol- 00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , In message <4030C043.3030509@cisco.com>, Stewart Bryant writes: > > > 4 and 6 will be preallocated, so that they do not get trodden on. > > We need to find out if there is any use of 5, 7, 8 and 9. I.e. > are there any routers in the Internet that carry IP versions > 5, 7, 8 or 9 over MPLS. If there are, we need to include them > in the registry as pre-allocated values. If not, then a > new implementation would need to operate under the rules > proposed below (i.e. run under 0, 1 or their own value). > > The IESG would advise IANA on the usage of this registry. > > - Stewart For all pracical purposes 7, 8 and 9 are not used at all, over MPLS or otherwise. These are left overs from the competing proposals to replace IPv4. The decision was made to go with IPv6. Since then none of them have been used. It would be reasonable for IESG/IANA to declare these values as having been temporarily assigned for protocol experiments which are long ago over and available for reclaim, but apparently they are choosing not to do so. There is (or was at some point) some use of 5 (ST-II). Use of ST-II may have disappeared, but I'm uncertain of that. IESG does have a very good point in that what these are being used for is not IP version numbers where the other 20 bytes are also an IP header. That IPv4 and IPv6 values are reserved in the new registry to allow the largest single contributor of traffic to be placed in MPLS without a shim is good, and not breaking very widespread current usage is good. If you reserve any number for "other IP version" then an IP packet with 5, 7, 8 and 9 or any new assignments of IP versions could be carried with a shim. Curtis _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 17 04:55:59 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA21160 for ; Tue, 17 Feb 2004 04:55:59 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At1wt-0003Ip-P8 for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 04:55:30 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1H9tRUK012527 for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 04:55:27 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At1we-0003Eb-4f; Tue, 17 Feb 2004 04:55:12 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aso7W-0006yW-On for avt@optimus.ietf.org; Mon, 16 Feb 2004 14:09:31 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id OAA12078 for ; Mon, 16 Feb 2004 14:09:28 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aso7U-0002Z0-00 for avt@ietf.org; Mon, 16 Feb 2004 14:09:28 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Aso6c-0002WG-00 for avt@ietf.org; Mon, 16 Feb 2004 14:08:35 -0500 Received: from [80.74.100.67] (helo=antivir2) by ietf-mx with smtp (Exim 4.12) id 1Aso6G-0002S2-00; Mon, 16 Feb 2004 14:08:12 -0500 Received: from 192.168.254.14 by antivir2 (InterScan E-Mail VirusWall NT); Mon, 16 Feb 2004 21:07:21 +0200 Received: by TLV1 with Internet Mail Service (5.5.2653.19) id ; Mon, 16 Feb 2004 21:05:15 +0200 Message-ID: From: Sasha Vainshtein To: "'curtis@fictitious.org'" , stbryant@cisco.com Cc: avt@ietf.org, pwe3@ietf.org Date: Mon, 16 Feb 2004 21:05:14 +0200 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="ISO-8859-8" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.3 required=5.0 tests=AWL autolearn=no version=2.60 Subject: [AVT] RE: [PWE3] Re: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol- 00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Curtis and Stewart, Thank you for the detailed explanation. To handle the new registry in a "safe" way, I would suggest to specify that only values 0 to 3 can be used, with 0 assigned to unindentified payload type, 1 - to identified payload type and leave 2 and 3 unassigned. In parallel IANA should declare values 1 to 3 (currently unassigned) as reserved in the version numbers registry to prevent any attempt to assign these values in future. Does it make sense? With best regards, Sasha Vainshtein email: sasha@axerra.com tel: +972-3-7659993 (office) +972-8-9254948 (res.) +972-58-674833 (cell.) > -----Original Message----- > From: Curtis Villamizar [mailto:curtis@workhorse.fictitious.org] > Sent: Monday, February 16, 2004 5:08 PM > To: stbryant@cisco.com > Cc: Sasha Vainshtein; avt@ietf.org; pwe3@ietf.org; Curtis Villamizar > Subject: Re: [PWE3] Re: I-D > ACTION:draft-ash-avt-ecrtp-over-mpls-protocol- 00.txt > > > > In message <4030C043.3030509@cisco.com>, Stewart Bryant writes: > > > > > > 4 and 6 will be preallocated, so that they do not get trodden on. > > > > We need to find out if there is any use of 5, 7, 8 and 9. I.e. > > are there any routers in the Internet that carry IP versions > > 5, 7, 8 or 9 over MPLS. If there are, we need to include them > > in the registry as pre-allocated values. If not, then a > > new implementation would need to operate under the rules > > proposed below (i.e. run under 0, 1 or their own value). > > > > The IESG would advise IANA on the usage of this registry. > > > > - Stewart > > > For all pracical purposes 7, 8 and 9 are not used at all, over MPLS or > otherwise. These are left overs from the competing proposals to > replace IPv4. The decision was made to go with IPv6. Since then none > of them have been used. It would be reasonable for IESG/IANA to > declare these values as having been temporarily assigned for protocol > experiments which are long ago over and available for reclaim, but > apparently they are choosing not to do so. There is (or was at some > point) some use of 5 (ST-II). Use of ST-II may have disappeared, but > I'm uncertain of that. > > IESG does have a very good point in that what these are being used for > is not IP version numbers where the other 20 bytes are also an IP > header. That IPv4 and IPv6 values are reserved in the new registry to > allow the largest single contributor of traffic to be placed in MPLS > without a shim is good, and not breaking very widespread current usage > is good. If you reserve any number for "other IP version" then an IP > packet with 5, 7, 8 and 9 or any new assignments of IP versions could > be carried with a shim. > > Curtis > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 17 04:55:59 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA21161 for ; Tue, 17 Feb 2004 04:55:59 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At1wt-0003Iq-PU for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 04:55:30 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1H9tRdM012530 for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 04:55:27 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At1wf-0003FA-K8; Tue, 17 Feb 2004 04:55:13 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AspG7-0007DK-Ug for avt@optimus.ietf.org; Mon, 16 Feb 2004 15:22:28 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA17750 for ; Mon, 16 Feb 2004 15:22:26 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AspG6-00014C-00 for avt@ietf.org; Mon, 16 Feb 2004 15:22:26 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AspF7-00012F-00 for avt@ietf.org; Mon, 16 Feb 2004 15:21:26 -0500 Received: from workhorse.fictitious.org ([209.150.1.230]) by ietf-mx with esmtp (Exim 4.12) id 1AspEZ-00010c-00; Mon, 16 Feb 2004 15:20:52 -0500 Received: from workhorse.fictitious.org (localhost.fictitious.org [127.0.0.1]) by workhorse.fictitious.org (8.12.9p2/8.12.8) with ESMTP id i1GKHPRX042297; Mon, 16 Feb 2004 15:17:25 -0500 (EST) (envelope-from curtis@workhorse.fictitious.org) Message-Id: <200402162017.i1GKHPRX042297@workhorse.fictitious.org> To: Sasha Vainshtein cc: "'curtis@fictitious.org'" , stbryant@cisco.com, avt@ietf.org, pwe3@ietf.org Reply-To: curtis@fictitious.org In-reply-to: Your message of "Mon, 16 Feb 2004 21:05:14 +0200." Date: Mon, 16 Feb 2004 15:17:24 -0500 From: Curtis Villamizar X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Subject: [AVT] Re: [PWE3] Re: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol- 00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , In message , Sasha Vainshtein writ es: > Curtis and Stewart, > Thank you for the detailed explanation. > > To handle the new registry in a "safe" way, I would suggest to specify > that only values 0 to 3 can be used, with 0 assigned to unindentified > payload type, 1 - to identified payload type and leave 2 and 3 unassigned. > > In parallel IANA should declare values 1 to 3 (currently unassigned) > as reserved in the version numbers registry to prevent any attempt to > assign these values in future. > > Does it make sense? > > With best regards, > Sasha Vainshtein > email: sasha@axerra.com > tel: +972-3-7659993 (office) > +972-8-9254948 (res.) > +972-58-674833 (cell.) No it doesn't make sense. Separate number spaces allow a value to be reserved for "other IP version" in which case there would be a shim followed by the complete 20 byte IP header with the version number filled in there. The values of 4 and 6 can be marked as "reserved to accommodate direct encapsulation of IPv4 and IPv6". If you wanted to be nice to ST-II then you could also reserve the number 5, but there is no ST-II over MPLS currently flowing so there is no concern over breaking a current deployment by requiring a shim. For the purpose of multipath, 4 and 6 are splitable, looking into the IPv4 or IPv6 headers for src/dst addresses. Any other value is either not supported by the multipath implementation or if supported, must look deeper into the packet. For example with TUBA traffic (version 7?) the shim would have the value for "other IP version" followed by a full header with the actual version in it. The TUBA traffic would be splitable by looking into the 20 byte addresses (but chances of running at line rate would be real small which is part of why we don't see any TUBA traffic). Curtis ps - No modern router supports IPv 7 8, or 9. No commercial router, or ISP deployed router ever supported IPv 7 8, or 9. No IPv 7 8, or 9 has been seen on a commercial network in nearly a decade. Other than TUBA (over OSI) there probably has never been any of this traffic on anything but a demo setup. > > -----Original Message----- > > From: Curtis Villamizar [mailto:curtis@workhorse.fictitious.org] > > Sent: Monday, February 16, 2004 5:08 PM > > To: stbryant@cisco.com > > Cc: Sasha Vainshtein; avt@ietf.org; pwe3@ietf.org; Curtis Villamizar > > Subject: Re: [PWE3] Re: I-D > > ACTION:draft-ash-avt-ecrtp-over-mpls-protocol- 00.txt > > > > > > > > In message <4030C043.3030509@cisco.com>, Stewart Bryant writes: > > > > > > > > > 4 and 6 will be preallocated, so that they do not get trodden on. > > > > > > We need to find out if there is any use of 5, 7, 8 and 9. I.e. > > > are there any routers in the Internet that carry IP versions > > > 5, 7, 8 or 9 over MPLS. If there are, we need to include them > > > in the registry as pre-allocated values. If not, then a > > > new implementation would need to operate under the rules > > > proposed below (i.e. run under 0, 1 or their own value). > > > > > > The IESG would advise IANA on the usage of this registry. > > > > > > - Stewart > > > > > > For all pracical purposes 7, 8 and 9 are not used at all, over MPLS or > > otherwise. These are left overs from the competing proposals to > > replace IPv4. The decision was made to go with IPv6. Since then none > > of them have been used. It would be reasonable for IESG/IANA to > > declare these values as having been temporarily assigned for protocol > > experiments which are long ago over and available for reclaim, but > > apparently they are choosing not to do so. There is (or was at some > > point) some use of 5 (ST-II). Use of ST-II may have disappeared, but > > I'm uncertain of that. > > > > IESG does have a very good point in that what these are being used for > > is not IP version numbers where the other 20 bytes are also an IP > > header. That IPv4 and IPv6 values are reserved in the new registry to > > allow the largest single contributor of traffic to be placed in MPLS > > without a shim is good, and not breaking very widespread current usage > > is good. If you reserve any number for "other IP version" then an IP > > packet with 5, 7, 8 and 9 or any new assignments of IP versions could > > be carried with a shim. > > > > Curtis > > > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 17 05:13:35 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA21752 for ; Tue, 17 Feb 2004 05:13:35 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At2Dz-0004pZ-At for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 05:13:07 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1HAD7Y8018532 for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 05:13:07 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At2Du-0004lq-0D; Tue, 17 Feb 2004 05:13:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At2Dq-0004lX-FF for avt@optimus.ietf.org; Tue, 17 Feb 2004 05:12:58 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA21739 for ; Tue, 17 Feb 2004 05:12:55 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1At2Dn-0002kK-00 for avt@ietf.org; Tue, 17 Feb 2004 05:12:55 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1At2Ct-0002gl-00 for avt@ietf.org; Tue, 17 Feb 2004 05:12:00 -0500 Received: from eagle.ericsson.se ([193.180.251.53]) by ietf-mx with esmtp (Exim 4.12) id 1At2CN-0002e2-00 for avt@ietf.org; Tue, 17 Feb 2004 05:11:27 -0500 Received: from esealmw142.al.sw.ericsson.se ([153.88.254.119]) by eagle.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1HABRAh023686 for ; Tue, 17 Feb 2004 11:11:27 +0100 Received: from esealnt610.al.sw.ericsson.se ([153.88.254.120]) by esealmw142.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 17 Feb 2004 11:11:27 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt610.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 1LJ2HA6T; Tue, 17 Feb 2004 11:12:44 +0100 Message-ID: <4031E840.8040609@ericsson.com> Date: Tue, 17 Feb 2004 11:09:04 +0100 X-Sybari-Trust: 02887964 c77f3eb6 8a146bd5 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: avt@ietf.org Content-Type: multipart/mixed; boundary="------------020906090803010304030507" X-OriginalArrivalTime: 17 Feb 2004 10:11:27.0464 (UTC) FILETIME=[67CAFE80:01C3F53E] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Subject: [AVT] [Fwd: I-D ACTION:draft-sjoberg-avt-rtp-amrwbplus-01.txt] Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. --------------020906090803010304030507 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Hi, An updated version of the AMR-WB+ payload format is available. We have made the following changes: - Clarified and given recommendations on interoperability with the AMR-WB payload format. - Added a offer/Answer consideration section - Proposed a solution on how to declared the mono and stereo channels. Cheers Magnus -------- Original Message -------- Subject: I-D ACTION:draft-sjoberg-avt-rtp-amrwbplus-01.txt Date: Mon, 16 Feb 2004 21:37:25 +0100 From: Internet-Drafts@ietf.org Reply-To: Internet-Drafts@ietf.org A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Real-Time Transport Protocol (RTP) Payload Format and Adaptive Multi-Rate Wideband plus (AMR-WB+) Audio Codec Author(s) : J. Sjoberg Filename : draft-sjoberg-avt-rtp-amrwbplus-01.txt Pages : 30 Date : 2004-2-16 This document specifies a real-time transport protocol (RTP) payload format to be used for Adaptive Multi-Rate Wideband plus (AMR-WB+) encoded audio signals. The AMR-WB+ codec is an audio extension of the AMR-WB codec providing additional modes designed to give higher quality of music and speech than the original modes. The payload format is designed according to the principles outlined in the existing payload formats for AMR and AMR-WB, RFC3267 [9]. A MIME type registration is included for AMR-WB+. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-sjoberg-avt-rtp-amrwbplus-01.t xt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-sjoberg-avt-rtp-amrwbplus-01.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-sjoberg-avt-rtp-amrwbplus-01.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. -- Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. --------------020906090803010304030507 Content-Type: message/rfc822; name="(null).eml" Content-Disposition: inline; filename="(null).eml" Subject: Date: Mon, 16 Feb 2004 22:57:50 +0100 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----_=_NextPart_002_01C3F4D8.92C92AC6" ------_=_NextPart_002_01C3F4D8.92C92AC6 Content-Type: text/plain This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. ------_=_NextPart_002_01C3F4D8.92C92AC6 Content-Type: application/octet-stream; name="ATT15742" Content-Disposition: attachment; filename="ATT15742" Content-type: message/external-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2004-2-16122442.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-sjoberg-avt-rtp-amrwbplus-01.txt ------_=_NextPart_002_01C3F4D8.92C92AC6 Content-Type: message/external-body; site="internet-drafts"; dir="draft-sjoberg-avt-rtp-amrwbplus-01.txt"; mode="ftp.ietf.org"; access-type="anon-ftp" ------_=_NextPart_002_01C3F4D8.92C92AC6-- --------------020906090803010304030507-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 17 10:14:34 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA02936 for ; Tue, 17 Feb 2004 10:14:34 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At6vH-0004mz-Bk for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 10:14:07 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1HFE7sg018363 for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 10:14:07 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At6vB-0004kA-9b; Tue, 17 Feb 2004 10:14:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At6uJ-0004Xu-8B for avt@optimus.ietf.org; Tue, 17 Feb 2004 10:13:07 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA02751 for ; Tue, 17 Feb 2004 10:13:03 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1At6uH-0006m6-00 for avt@ietf.org; Tue, 17 Feb 2004 10:13:05 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1At6tL-0006ho-00 for avt@ietf.org; Tue, 17 Feb 2004 10:12:07 -0500 Received: from web41903.mail.yahoo.com ([66.218.93.154]) by ietf-mx with smtp (Exim 4.12) id 1At6sS-0006aS-00 for avt@ietf.org; Tue, 17 Feb 2004 10:11:12 -0500 Message-ID: <20040217151041.11169.qmail@web41903.mail.yahoo.com> Received: from [202.134.200.4] by web41903.mail.yahoo.com via HTTP; Tue, 17 Feb 2004 07:10:41 PST Date: Tue, 17 Feb 2004 07:10:41 -0800 (PST) From: shailendra singh To: magnus.westerlund@ericsson.com Cc: avt@ietf.org MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-200092367-1077030641=:10059" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=1.0 required=5.0 tests=AWL,DEAR_SOMETHING, HTML_MESSAGE autolearn=no version=2.60 Subject: [AVT] Help me Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --0-200092367-1077030641=:10059 Content-Type: text/plain; charset=us-ascii Dear sir, I am working on multimedia video conferencing.I have to do Lip synchronization(audio video synchronization).I am using protocols RTP,SIP,RTCP. but unable to do this. Kindly help me and suggest any method or any algorithm for achieving this . I have to submit my project this week . Please help me I am wiating for ur response. regards. Shailendra Singh --------------------------------- Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online --0-200092367-1077030641=:10059 Content-Type: text/html; charset=us-ascii
Dear sir,
I am working on multimedia video conferencing.I have to do Lip synchronization(audio video synchronization).I am using protocols RTP,SIP,RTCP.
but unable to do this. Kindly help me and suggest any method or any algorithm for achieving this .
I have to submit my project this week .
Please help me I am wiating for ur response.
regards.


Shailendra Singh

Do you Yahoo!?
Yahoo! Finance: Get your refund fast by filing online --0-200092367-1077030641=:10059-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 17 10:31:33 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA04606 for ; Tue, 17 Feb 2004 10:31:32 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At7Bi-0008Ti-3s for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 10:31:06 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1HFV6uQ032589 for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 10:31:06 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At7Bd-0008Rl-UP; Tue, 17 Feb 2004 10:31:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At7B7-0008QB-1g for avt@optimus.ietf.org; Tue, 17 Feb 2004 10:30:29 -0500 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA04429; Tue, 17 Feb 2004 10:30:24 -0500 (EST) Message-Id: <200402171530.KAA04429@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: IETF-Announce: ; Cc: avt@ietf.org From: Internet-Drafts@ietf.org Reply-to: Internet-Drafts@ietf.org Date: Tue, 17 Feb 2004 10:30:24 -0500 Subject: [AVT] I-D ACTION:draft-ietf-avt-rtp-h264-04.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Audio/Video Transport Working Group of the IETF. Title : RTP payload Format for JVT Video Author(s) : S. Wenger Filename : draft-ietf-avt-rtp-h264-04.txt Pages : 59 Date : 2004-2-17 This memo describes an RTP Payload format for the ITU-T Recommendation H.264 video codec. This codec was designed as a joint project of the Video Coding Experts Group (VCEG) of ITU-T and the Moving Picture Experts Group (MPEG) of ISO/IEC. Recommendation H.264 was approved by ITU-T on May 2003, and the approved draft specification is available for public review. ISO/IEC International Standard 14496-10 will be technically identical to ITU-T Recommendation H.264. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-avt-rtp-h264-04.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-avt-rtp-h264-04.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-avt-rtp-h264-04.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2004-2-17102945.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-avt-rtp-h264-04.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-avt-rtp-h264-04.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2004-2-17102945.I-D@ietf.org> --OtherAccess-- --NextPart-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 17 12:05:35 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA17592 for ; Tue, 17 Feb 2004 12:05:35 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At8eh-0004nQ-Lh for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 12:05:07 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1HH57hx018436 for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 12:05:07 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At8eb-0004mO-Rw; Tue, 17 Feb 2004 12:05:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1At8eN-0004lY-Se for avt@optimus.ietf.org; Tue, 17 Feb 2004 12:04:47 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA17516 for ; Tue, 17 Feb 2004 12:04:44 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1At8eL-0006OD-00 for avt@ietf.org; Tue, 17 Feb 2004 12:04:45 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1At8cq-00065L-00 for avt@ietf.org; Tue, 17 Feb 2004 12:03:14 -0500 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47]) by ietf-mx with esmtp (Exim 4.12) id 1At8ap-0005ey-00 for avt@ietf.org; Tue, 17 Feb 2004 12:01:07 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by penguin-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1HH15YG017265 for ; Tue, 17 Feb 2004 18:01:05 +0100 (MET) Received: from esealnt611.al.sw.ericsson.se ([153.88.254.121]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 17 Feb 2004 18:01:05 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt611.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 166B2K3K; Tue, 17 Feb 2004 18:01:17 +0100 Message-ID: <40324842.20407@ericsson.com> Date: Tue, 17 Feb 2004 17:58:42 +0100 X-Sybari-Trust: efe03573 c77f3eb6 201da35e 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Belling Thomas CC: "'avt@ietf.org'" , Oestreich Stefan Subject: Re: [AVT] Size of RTCP packets using IPv6 References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 17 Feb 2004 17:01:05.0677 (UTC) FILETIME=[A18CABD0:01C3F577] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi Thomas, [Taking chair hat off] I would like to point out to you that using explicit IPv6 addresses is probably not the smartest move for having a short and compact CNAME. I think that a CNAME of around 25 bytes is realistic if one makes the effort to find short and good CNAMEs. For a mobile phone the MSID@operator.com would result in such a size as long as one tries to use short domain names. It would also fullfill the requirements on a CNAME. I do not expect that a mobile phone will be capable of handling two simultanous non-related media sessions. Thus this would provide global unique names. See more comments inline: Belling Thomas wrote: > Hi all, > > > within the 3GPP there were some discussions about realistic sizes of > RTCP compound packets in an IPv6 Network. > > Apart from the IPv6/UDP header each packet contains at least a SR (52 > bytes) or RR (32 bytes), plus SDES package including a CNAME is also > mandated in each compound RTCP package. This includes a header of fixed > size (6 bytes), plus a "host" or "user@host" part of variable size.. > > The last part is tricky. According to RFC 1132 (which was written for > IPv4, not taking into account the larger IPv6 address space), "Host > software MUST handle host names of up to 63 characters and SHOULD handle > host names of up to 255 characters." Expressing a full IPv6 address in > ASCI notation also requires up to 39 characters. I assume one should > expect this part to be at least around 100 bytes. Other opinions? I think this depends very much on the scenario and where the user is connected. A lot of people can have a rather short ones. I think Colin at his previous work could have has one like this: csp@cruncher.isi.edu This is a 20 characters, and me taking the liberty to invent a host name of 8 characters. Then on the other side the maximum length is 255 characters. I think that rather many will suffice with a maximum of 40 chars. A few extreme cases could come up to the 100 you mention. However this takes either a surprisingly long domain name or explicit IPv6 address combined with the user name from hell. > > There were also some ideas to restrict the recommended size of compound > RTCP packets to around 90 bytes (exluding IP/UDP), and optimise > transmission for such a size. > > I doubt this is a good idea: > > * My guess of a "minimum" size already exceeds this value. > * translators and mixers should combine RTCP packets > * A host should send only one RTCP compound packet by report > interval, because this is assumed in the bandwidth/frequency > algorithms for calculating the RTCP sending times. This implies > the host should combine any information it needs to send in this > period within one compoung packet. > * Host may therefore need to combine several sender and receiver > reports (e.g. if multiple senders/receivers are involved, or > multiple media streams per host), or may need to add mandatory > RTCP extension packets defined in RTP profiles. > > Do you agree? > I think a size of RTCP packets of around 100 bytes without lower layers are possible, under the following restrictions from the scenario - VoIP one to one communication, i.e. no conferences with mixers, one SSRC per end-point. - One selects CNAME in a smart way. - One does not have any RTCP extensions. - No need for further SDES items. However if one needs to support a wider application scenario than the one the calculations was done for, then of course the size will be bigger. I would also like to point out the greater need for RTCP in a conference application. In a conference application you have greater need to use the SDES items to identify who is actually speaking. This is even more important if some kind of mixer, or traffic reflector is used. Also the need for SSRC collision detection, network feedback becomes more important as one has more participants in a session. > > Acoording to your experience, what are realsitic sizes of RTCP packets > with IPv6? > I think this is a very hard question as it depends on the scenario. From 60 bytes of RTCP when on is alone in the session, to a whole MTU reporting on a multiple of sources, plus using extended reporting, for example RFC 3611. I am still hoping that this 3GPP debate will be resolved in such a way that RTCP will not be turned off, and that RTCP can received a reasonable QoS in regards to the media flow. Best Regards Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 17 23:25:40 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id XAA27678 for ; Tue, 17 Feb 2004 23:25:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtJGn-0000JF-GY for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 23:25:12 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1I4P9AC001188 for avt-archive@odin.ietf.org; Tue, 17 Feb 2004 23:25:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtJGg-0000Ib-5U; Tue, 17 Feb 2004 23:25:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtJGW-0000Hy-6u for avt@optimus.ietf.org; Tue, 17 Feb 2004 23:24:52 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id XAA27647 for ; Tue, 17 Feb 2004 23:24:49 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AtJGU-00000K-00 for avt@ietf.org; Tue, 17 Feb 2004 23:24:50 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AtJFI-0007kb-00 for avt@ietf.org; Tue, 17 Feb 2004 23:23:37 -0500 Received: from ns5.sony.co.jp ([137.153.0.45]) by ietf-mx with esmtp (Exim 4.12) id 1AtJEi-0007hq-00 for avt@ietf.org; Tue, 17 Feb 2004 23:23:01 -0500 Received: from mail7.sony.co.jp (mail7.sony.co.jp [43.0.1.209]) Received: from mail7.sony.co.jp (localhost [127.0.0.1]) by mail7.sony.co.jp (R8/Sony) with ESMTP id i1I4Mq009858 for ; Wed, 18 Feb 2004 13:22:52 +0900 (JST) Received: from jptkyxim01.jp.sony.com (jptkyxim01.jp.sony.com [43.15.17.87]) by mail7.sony.co.jp (R8/Sony) with ESMTP id i1I4MpC09839 for ; Wed, 18 Feb 2004 13:22:51 +0900 (JST) Received: from jptkyxwa01.jp.sony.com ([43.15.31.1]) by jptkyxim01.jp.sony.com with Microsoft SMTPSVC(5.0.2195.5329); Wed, 18 Feb 2004 13:22:51 +0900 Received: from [43.13.117.153] ([43.13.117.153]) by jptkyxwa01.jp.sony.com with Microsoft SMTPSVC(5.0.2195.5329); Wed, 18 Feb 2004 13:22:51 +0900 Mime-Version: 1.0 (Apple Message framework v612) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: <1CDE927C-61CA-11D8-A1E4-000393CC2B7A@jp.sony.com> Content-Transfer-Encoding: 7bit Cc: avt@ietf.org, Mitsuyuki Hatanaka , Jun Matsumoto From: Matthew Romaine Date: Wed, 18 Feb 2004 13:22:50 +0900 To: Magnus Westerlund X-Mailer: Apple Mail (2.612) X-OriginalArrivalTime: 18 Feb 2004 04:22:51.0415 (UTC) FILETIME=[DF44F270:01C3F5D6] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] ATRAC Family Payload update Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Magnus and the avt crew, I have compiled comments thus far regarding the new ATRAC payload format, and have attempted to resolve each issue. Please let me know if the responses are heading in the right direction. Magnus wrote: "There is need to resolve how the setup signalling for this payload format will work. The normal model is that one defines a MIME type..." A few new sections have been added to the draft, which I have inserted below. Is this along the lines of what is needed? 5.1 ATRAC Family MIME Registraion The MIME subtype for the Adaptive TRansform Codec Family (ATRAC Family) is allocated from the Vendor tree since ATRAC is intended to be used with commercial products, and use of ATRAC requires a license from Sony Corporation, the vendor. Note, any unspecified parameter MUST be ignored by the receiver. Media Type name: audio Media subtype name: ATRACFAMILY Required parameters: profile: ATRAC, ATRAC3, ATRAC-X frameSampleSize: 512, 1024, 2048 sampleRate: 32000, 44100, 48000, 88100, 96000 frameLength: [license required] channels: 1, 2, 3, 4, 5, 6, 7, 8 Optional parameters: maxptime: The maximum amount of media which can be encapsulated in a payload packet, expressed as time in milliseconds. The time is calculated as the sum of the time the media present in the packet represents. The time SHOULD be a multiple of the frame size. If this parameter is not present, the sender MAY encapsulate a maximum of 16 encoded frames into one RTP packet. ptime: see RFC2327 [2] Encoding considerations: This type is defined for transfer via RTP (RFC 1889). File extensions: at1, atr, at3, atx Macintosh file type code: none Object identifier or OID: none Intended usage: LIMITED USE Only licensees of ATRAC technology may use this type. 5.2 Mapping MIME Parameters into SDP The information carried in the MIME media type specification has a specific mapping to fields in the Session Description Protocol (SDP) [2], which is commonly used to describe RTP sessions. When SDP is used to specify sessions employing the ATRAC family of codecs, the mapping is as follows: - The MIME type ("audio") goes in SDP "m=" as the media name - The MIME subtype (payload format name) goes in SDP "a=rtpmap" as the encoding name. The RTP clock rate in "a=rtpmap" MUST be as indicated in the required parameter "sampleRate". - The parameters "ptime" and "maxptime" go in the SDP "a=ptime" and "a=maxptime" attributes, respectively. - Any remaining parameters go in the SDP "a=fmtp" attribute by copying them directly from the MIME media type string as a semicolon separated list of parameter=value pairs. Some example SDP session descriptions utilizing ATRAC encodings follow. In these examples, long a=fmtp lines are folded to meet the column width constraints of this document; the backslash ("\") at the end of a line and the carriage return that follows it should be ignored. Example usage of ATRAC with stereo at 44100Hz encoded with ATRAC3: m = audio 49120 RTP/AVP 99 a = rtpmap:99 ATRACFAMILY/44100 a = fmtp:99 profile=ATRAC3; frameSampleSize=1024; frameLength=312; \ channels=2 a = maxptime:20 Example usage of ATRAC with 5.1 setup at 48000Hz encoded with ATRAC-X: m = audio 49120 RTP/AVP 99 a = rtpmap:99 ATRACFAMILY/48000 a = fmtp:99 profile=ATRAC-X; frameSampleSize=2048; \ frameLength=1156; channels=6 a = maxptime:50 (An Offer/Answer Model consideration is still being drafted.) Magnus wrote: "I would like to see some more information about the codecs in the beginning of the draft. Especially properties like, possible sampling frequency, multi-channel support, frame sizes, etc. which effects the payload design." Here is how the details section in the introduction now reads: Early versions of the ATRAC codec handled only two channels of audio at 44.1kHz sampling frequency, with typical bit-rates between 66kbps and 132kbps. The latest version allows for up to 8 channels of audio at 96kHz sampling frequency. The feasible bit-rate range has also expanded to from 8kbps to 1400kbps. Depending on the version of ATRAC used, the sample-frame size is either 512, 1024 or 2048. Actual bit-rates are determined by specifying a fixed encoded frame-size. In other words, instead of requesting a stereo 44.1kHz stream at, say, 64kbps, one would tell the encoder to create encoded frame-sizes of 364bytes. Magnus wrote: "The Frame Offset fields is not sufficiently defined. I don't understand how you can determine the TS offset for each frame in the packet using only this field. Also how does it work when there are more than 2 frames present in the same RTP payload?" Here is how the new Frame Offset section reads: Frame Offset (FrOff): 4 bits The purpose of frame offsets is to provide a basic mechanism for the transmission of redundant data. Using the current packet's timestamp as a reference, the frame offset is converted to units of the timestamp. Since frame-size lengths are fixed after being determined during SDP initiations (one of either 512, 1024, or 2048 samples), the playback time of the first frame (in relation to the current timestamp) in the packet can then be calculated. As an example of using Frame Offsets, consider a situation when FrOff is 3. If a packet has 5 frames of audio, with each frame representing 1024 samples of audio, then we calculate that playback begins 3 frames (3072 samples) before the current timestamp. (The only other necessary variable is sampling frequency, which MUST have been established during SDP negotiations). This field SHOULD NOT be used in packets containing fragmented data. Magnus wrote: "The security section will need more work. I think there is need to discuss also authentication and integrity protection. Also congestion control might need some special consideration, due to redundancy transmission and possibility to vary bit-rate." Is a model similar to what exists in the AMR-WB+ draft sufficient? thanks, matt ---------------------------------------- Matthew M.I. Romaine IMNC Audio Codec Group Sony Corporation phone: 03-5448-6065 fax: 03-5448-5617 ---------------------------------------- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 18 05:38:41 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA05363 for ; Wed, 18 Feb 2004 05:38:41 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtP5q-0001Xa-1G for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 05:38:14 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1IAcEpR005919 for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 05:38:14 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtP5d-0001T8-8o; Wed, 18 Feb 2004 05:38:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtP5S-0001QD-Js for avt@optimus.ietf.org; Wed, 18 Feb 2004 05:37:50 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA05345 for ; Wed, 18 Feb 2004 05:37:47 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AtP5P-0004k1-00 for avt@ietf.org; Wed, 18 Feb 2004 05:37:47 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AtP4W-0004gt-00 for avt@ietf.org; Wed, 18 Feb 2004 05:36:53 -0500 Received: from albatross-ext.wise.edt.ericsson.se ([193.180.251.49]) by ietf-mx with esmtp (Exim 4.12) id 1AtP44-0004du-00 for avt@ietf.org; Wed, 18 Feb 2004 05:36:24 -0500 Received: from esealmw141.al.sw.ericsson.se ([153.88.254.120]) by albatross-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1IAaPqY025342 for ; Wed, 18 Feb 2004 11:36:25 +0100 (MET) Received: from esealnt611.al.sw.ericsson.se ([153.88.254.121]) by esealmw141.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Wed, 18 Feb 2004 11:36:24 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt611.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 166BP6JR; Wed, 18 Feb 2004 11:36:38 +0100 Message-ID: <40333F97.4070005@ericsson.com> Date: Wed, 18 Feb 2004 11:33:59 +0100 X-Sybari-Trust: 877c4d82 c77f3eb6 63d53497 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: avt@ietf.org CC: Ladan Gharai , Colin Perkins Subject: Re: [AVT] WG Last Call: draft-ietf-avt-uncomp-video-05.txt References: <401E08DF.8010605@ericsson.com> In-Reply-To: <401E08DF.8010605@ericsson.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 18 Feb 2004 10:36:24.0877 (UTC) FILETIME=[0EBBD5D0:01C3F60B] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, The WG last call for the RTP payload format for uncompressed video has ended. We have received comments from Philippe Gentric endorsing publication. The typos found by Philippe has been corrected in the submitted update. Therefore I will now request that draft-ietf-avt-uncomp-video-06.txt is published as an proposed standard. Cheers Magnus -- Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 18 09:34:40 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA12754 for ; Wed, 18 Feb 2004 09:34:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtSmD-0002q2-4F for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 09:34:13 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1IEYCgC010748 for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 09:34:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtSm1-0002lb-Sm; Wed, 18 Feb 2004 09:34:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtSlc-0002l0-4v for avt@optimus.ietf.org; Wed, 18 Feb 2004 09:33:36 -0500 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA12653; Wed, 18 Feb 2004 09:33:33 -0500 (EST) Message-Id: <200402181433.JAA12653@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: IETF-Announce: ; Cc: avt@ietf.org From: Internet-Drafts@ietf.org Reply-to: Internet-Drafts@ietf.org Date: Wed, 18 Feb 2004 09:33:32 -0500 Subject: [AVT] I-D ACTION:draft-ietf-avt-text-red-01.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Audio/Video Transport Working Group of the IETF. Title : Registration of the text/red MIME Sub-Type Author(s) : P. Jones Filename : draft-ietf-avt-text-red-01.txt Pages : 6 Date : 2004-2-18 This document defines the text/red MIME sub-type. The actual RTP packetization for this MIME type is specified in RFC 2198. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-avt-text-red-01.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-avt-text-red-01.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-avt-text-red-01.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2004-2-18094429.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-avt-text-red-01.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-avt-text-red-01.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2004-2-18094429.I-D@ietf.org> --OtherAccess-- --NextPart-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 18 10:19:58 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA12756 for ; Wed, 18 Feb 2004 09:34:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtSmD-0002q3-4h for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 09:34:13 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1IEYCSu010750 for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 09:34:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtSm3-0002lm-8e; Wed, 18 Feb 2004 09:34:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtSlk-0002l6-Ss for avt@optimus.ietf.org; Wed, 18 Feb 2004 09:33:44 -0500 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA12667; Wed, 18 Feb 2004 09:33:41 -0500 (EST) Message-Id: <200402181433.JAA12667@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: IETF-Announce: ; Cc: avt@ietf.org From: Internet-Drafts@ietf.org Reply-to: Internet-Drafts@ietf.org Date: Wed, 18 Feb 2004 09:33:41 -0500 Subject: [AVT] I-D ACTION:draft-ietf-avt-rtcpssm-06.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Audio/Video Transport Working Group of the IETF. Title : RTCP Extensions for Single-Source Multicast Sessions with Unicase Feedback Author(s) : J. Chesterfield Filename : draft-ietf-avt-rtcpssm-06.txt Pages : 39 Date : 2004-2-18 This document specifies a modification to the Real-time Transport Control Protocol (RTCP) to use unicast feedback. The proposed extension is useful for single source multicast sessions such as Source Specific Multicast (SSM) communication where the traditional model of many-to-many group communication is either not possible or not preferred. In addition, it can be applied to any group that might benefit from a sender controlled summarised reporting mechanism. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-avt-rtcpssm-06.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-avt-rtcpssm-06.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-avt-rtcpssm-06.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2004-2-18094446.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-avt-rtcpssm-06.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-avt-rtcpssm-06.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2004-2-18094446.I-D@ietf.org> --OtherAccess-- --NextPart-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 18 10:19:59 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA12755 for ; Wed, 18 Feb 2004 09:34:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtSmD-0002q1-3m for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 09:34:13 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1IEYC1v010751 for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 09:34:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtSm1-0002lT-5l; Wed, 18 Feb 2004 09:34:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtSlJ-0002kf-SK for avt@optimus.ietf.org; Wed, 18 Feb 2004 09:33:17 -0500 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA12638; Wed, 18 Feb 2004 09:33:14 -0500 (EST) Message-Id: <200402181433.JAA12638@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: IETF-Announce: ; Cc: avt@ietf.org From: Internet-Drafts@ietf.org Reply-to: Internet-Drafts@ietf.org Date: Wed, 18 Feb 2004 09:33:14 -0500 Subject: [AVT] I-D ACTION:draft-ietf-avt-ulp-09.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Audio/Video Transport Working Group of the IETF. Title : An RTP Payload Format for Generic FEC Author(s) : A. Li Filename : draft-ietf-avt-ulp-09.txt Pages : 36 Date : 2004-2-18 This document specifies a payload format for generic Forward Error Correction (FEC) for media data encapsulated in RTP. It is based on the exclusive-or (parity) operation, and it is a generalized algorithms that includes Uneven Level Protection (ULP). The payload format described in this draft allows end systems to apply protection using arbitrary protection lengths and levels, in addition to using arbitrary protection group sizes. It enables complete recovery or partial recovery of the critical payload and RTP header fields depending on the packet loss situation. This scheme is completely backward compatible with non-FEC capable hosts. Those receivers that do not know about FEC can simply ignore the protection data. This draft will obsolete RFC 2733 and RFC 3009. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-avt-ulp-09.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-avt-ulp-09.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-avt-ulp-09.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2004-2-18094410.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-avt-ulp-09.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-avt-ulp-09.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2004-2-18094410.I-D@ietf.org> --OtherAccess-- --NextPart-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 18 13:13:33 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA05968 for ; Wed, 18 Feb 2004 13:13:32 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtWC2-0003VN-Gs for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 13:13:06 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1IID6DD013449 for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 13:13:06 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtWBx-0003U0-Tu; Wed, 18 Feb 2004 13:13:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtWBB-0003O3-6S for avt@optimus.ietf.org; Wed, 18 Feb 2004 13:12:13 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA05878 for ; Wed, 18 Feb 2004 13:12:09 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AtWB9-00053d-00 for avt@ietf.org; Wed, 18 Feb 2004 13:12:11 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AtWAB-0004zs-00 for avt@ietf.org; Wed, 18 Feb 2004 13:11:11 -0500 Received: from sj-iport-1-in.cisco.com ([171.71.176.70] helo=sj-iport-1.cisco.com) by ietf-mx with esmtp (Exim 4.12) id 1AtW9Z-0004uH-00 for avt@ietf.org; Wed, 18 Feb 2004 13:10:34 -0500 Received: from edison.cisco.com (edison.cisco.com [171.71.180.109]) by sj-core-2.cisco.com (8.12.10/8.12.6) with ESMTP id i1IIA14U029562; Wed, 18 Feb 2004 10:10:01 -0800 (PST) Received: from DWINGW2K4 ([128.107.170.213] (may be forged)) by edison.cisco.com (8.8.6 (PHNE_14041)/CISCO.SERVER.1.2) with SMTP id KAA28761; Wed, 18 Feb 2004 10:10:00 -0800 (PST) From: "Dan Wing" To: "IETF AVT mailing list" Cc: "Flemming Andreasen" , "Dave Oran" Date: Wed, 18 Feb 2004 10:10:00 -0800 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] verifying bearer connectivity Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Flemming Andreasen is planning to present draft-wing-avt-rtp-noop and its companion, draft-andreasen-mmusic-connectivityprecondition-00.txt, at the upcoming AVT meeting in Seoul. Their abstracts are below. We wanted to ensure that AVT is aware of these individual contributions. These I-Ds provide a mechanism to verify the existance of, and quality of, the bearer path prior to alerting the user. draft-wing-avt-rtp-noop-00.txt abstract: This document defines an no-op payload format for the Real-time Transport Protocol (RTP), and a mechanism to request an immediate RTCP report. This can be used to verify RTP connectivity and to keep Network Address Translator (NAT) bindings and Firewall pinholes open. http://www.ietf.org/internet-drafts/draft-wing-avt-rtp-noop-00.txt The IESG has been made aware of IPR surrounding -wing-avt-rtp-noop-, and a pointer to http://www.ietf.org/ipr.html will be in the -01 revision of draft-wing-avt-rtp-noop. draft-andreasen-mmusic-connectivityprecondition-00.txt abstract: This document defines a new connectivity precondition for the Session Description Protocol precondition framework described in RFC 3312. A connecitivity precondition can be used to delay session establishment or modification until media stream connectivity has been verified successfully. http://www.ietf.org/internet-drafts/draft-andreasen-mmusic-connectivitypreco ndition-00.txt -Dan Wing _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 18 14:15:39 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id OAA10804 for ; Wed, 18 Feb 2004 14:15:39 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtXA7-0000IZ-CJ for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 14:15:11 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1IJFBfU001110 for avt-archive@odin.ietf.org; Wed, 18 Feb 2004 14:15:11 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtXA0-0000Fk-CY; Wed, 18 Feb 2004 14:15:04 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtX9P-00009S-Nt for avt@optimus.ietf.org; Wed, 18 Feb 2004 14:14:27 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id OAA10435 for ; Wed, 18 Feb 2004 14:14:22 -0500 (EST) From: csp@csperkins.org Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AtX9L-0003tW-00 for avt@ietf.org; Wed, 18 Feb 2004 14:14:23 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AtX6m-0003Jj-00 for avt@ietf.org; Wed, 18 Feb 2004 14:11:45 -0500 Received: from dukar1973.demon.nl ([82.161.26.18] helo=ietf.org) by ietf-mx with smtp (Exim 4.12) id 1AtX4i-0002qI-00 for avt@ietf.org; Wed, 18 Feb 2004 14:09:36 -0500 To: avt@ietf.org Date: Wed, 18 Feb 2004 20:11:38 +0100 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="40505880" Message-Id: X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=3.7 required=5.0 tests=MICROSOFT_EXECUTABLE, MSGID_FROM_MTA_SHORT,NO_REAL_NAME autolearn=no version=2.60 Subject: [AVT] hi Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , --40505880 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit why? --40505880 Content-Type: text/plain Content-Transfer-Encoding: 7bit [Filename: talk.exe, Content-Type: application/octet-stream] The attachment file in the message has been removed by eManager. --40505880-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 19 04:14:48 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA07179 for ; Thu, 19 Feb 2004 04:14:48 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtkG9-0006u7-Hn for avt-archive@odin.ietf.org; Thu, 19 Feb 2004 04:14:20 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1J9EHAt026534 for avt-archive@odin.ietf.org; Thu, 19 Feb 2004 04:14:17 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtkFt-0006sw-Ju; Thu, 19 Feb 2004 04:14:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtkEx-0006qh-7a for avt@optimus.ietf.org; Thu, 19 Feb 2004 04:13:03 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA06909 for ; Thu, 19 Feb 2004 04:13:00 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AtkEt-0006kf-00 for avt@ietf.org; Thu, 19 Feb 2004 04:12:59 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AtkE0-0006gZ-00 for avt@ietf.org; Thu, 19 Feb 2004 04:12:05 -0500 Received: from mail3.pi.se ([195.7.64.137] ident=root) by ietf-mx with esmtp (Exim 4.12) id 1AtkD1-0006Zl-00 for avt@ietf.org; Thu, 19 Feb 2004 04:11:03 -0500 Received: from vit (136.240.13.217.in-addr.dgcsystems.net [217.13.240.136]) (authenticated (0 bits)) by mail3.pi.se (8.12.10/8.11.2) with ESMTP id i1J98agu016360; Thu, 19 Feb 2004 10:08:40 +0100 (CET) From: "Gunnar Hellstrom" To: "avt IETF" Cc: "Paul Jones" , "Toip list" , "Text Telephone Forum" Subject: [AVT] draft-ietf-avt-rfc2793bis-02 RTP packetisation for text conversation published Date: Thu, 19 Feb 2004 10:10:23 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by mail3.pi.se id i1J98agu016360 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL,HTML_50_60 autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable A new internet draft: draft-ietf-avt-rfc2793bis-02 has been published. It= is intended for real time chatracter by character text transmission in RTP. Below the announcement copied here, there is a list of comments and responses on the -01 version. The new draft will be reviewed in the avt meeting in IETF 59, with the intention that this work shall rapidly approach the last call state. A couple of other activities in the interactive text conversation area wi= ll be briefly covered in the same session to complete the picture of maturin= g support for real time text over IP connections, including, but not only covering SIP calls. -----------Announcement--------------------------------------------------= --- --- A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : RTP Payload for Text Conversation Author(s) : G. Hellstrom, P. Jones Filename : draft-ietf-avt-rfc2793bis-02.txt Pages : 20 Date : 2004-2-18 This memo describes how to carry text conversation session contents in RTP packets. Text conversation session contents are specified in ITU-T Recommendation T.140 [1]. Text conversation is used alone or in connection to other conversational facilities such as video and voice, to form multimedia conversation services. This RTP payload description contains an optional possibility to include redundant text from already transmitted packets in order to reduce the risk of text loss caused by packet loss. The redundancy coding follows RFC 2198. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-avt-rfc2793bis-02.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the messag= e. Internet-Drafts are also available by anonymous FTP. Login with the usern= ame "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-avt-rfc2793bis-02.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-avt-rfc2793bis-02.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. -------------Comments on the -01 version ( mainly from Magnus Westerlund) and answers --------------------- 1. Abstract: You need to remove the [1] reference. ; Thu, 19 Feb 2004 05:37:39 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtlYO-0004vG-AP for avt-archive@odin.ietf.org; Thu, 19 Feb 2004 05:37:12 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1JAbCad018870 for avt-archive@odin.ietf.org; Thu, 19 Feb 2004 05:37:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtlYF-0004rZ-Am; Thu, 19 Feb 2004 05:37:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtlXd-0004pF-52 for avt@optimus.ietf.org; Thu, 19 Feb 2004 05:36:25 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA12816 for ; Thu, 19 Feb 2004 05:36:21 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AtlXZ-0004Cn-00 for avt@ietf.org; Thu, 19 Feb 2004 05:36:21 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AtlWX-00044H-00 for avt@ietf.org; Thu, 19 Feb 2004 05:35:18 -0500 Received: from eagle.ericsson.se ([193.180.251.53]) by ietf-mx with esmtp (Exim 4.12) id 1AtlVT-0003yz-00 for avt@ietf.org; Thu, 19 Feb 2004 05:34:12 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by eagle.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1JAYDAh028140 for ; Thu, 19 Feb 2004 11:34:13 +0100 Received: from esealnt611.al.sw.ericsson.se ([153.88.254.121]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Thu, 19 Feb 2004 11:34:12 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt611.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 166B6GA2; Thu, 19 Feb 2004 11:34:29 +0100 Message-ID: <40349091.3080000@ericsson.com> Date: Thu, 19 Feb 2004 11:31:45 +0100 X-Sybari-Trust: 93f7bc50 c77f3eb6 a03ace1c 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: IETF AVT WG Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 19 Feb 2004 10:34:12.0945 (UTC) FILETIME=[EA825C10:01C3F6D3] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Updated RFCs on Copyright and IPR in relation to IETF Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, I would like to make all WG participants aware of that 3 RFC has been published that updates your rights in submission to the IETF. I would recommend that you look at them. Reasons why you should look at them are: - RFC 3667 updates what an Internet draft needs to contain, thus it is important that any document editor reads this. - RFC 3667 also regulates what rights you grant with any contribution to the IETF. Please note that as contribution is also counted email to the WG, speaking at the WG meeting. Please read the RFC for authoritative text on this. - RFC 3668 describes what rules that apply for IPR disclosures, thus it applies to any contributing to the IETF. - RFC 3669 contains guidelines for how to handle IPR in the WG. This can be useful reading for people discussing, having or disclosing IPR. See document information, abstract and links below. Cheers Magnus BCP 78 RFC 3667 Title: IETF Rights in Contributions Author(s): S. Bradner Status: Best Current Practice Date: February 2004 Mailbox: sob@harvard.edu Pages: 18 Characters: 43297 SeeAlso: BCP 78 I-D Tag: draft-ietf-ipr-submission-rights-08.txt URL: ftp://ftp.rfc-editor.org/in-notes/rfc3667.txt The IETF policies about rights in Contributions to the IETF are designed to ensure that such Contributions can be made available to the IETF and Internet communities while permitting the authors to retain as many rights as possible. This memo details the IETF policies on rights in Contributions to the IETF. It also describes the objectives that the policies are designed to meet. This memo updates RFC 2026, and, with RFC 3668, replaces Section 10 of RFC 2026. BCP 79 RFC 3668 Title: Intellectual Property Rights in IETF Technology Author(s): S. Bradner Status: Best Current Practice Date: February 2004 Mailbox: sob@harvard.edu Pages: 17 Characters: 41365 SeeAlso: BCP 79 I-D Tag: draft-ietf-ipr-technology-rights-12.txt URL: ftp://ftp.rfc-editor.org/in-notes/rfc3668.txt The IETF policies about Intellectual Property Rights (IPR), such as patent rights, relative to technologies developed in the IETF are designed to ensure that IETF working groups and participants have as much information about any IPR constraints on a technical proposal as possible. The policies are also intended to benefit the Internet community and the public at large, while respecting the legitimate rights of IPR holders. This memo details the IETF policies concerning IPR related to technology worked on within the IETF. It also describes the objectives that the policies are designed to meet. This memo updates RFC 2026 and, with RFC 3667, replaces Section 10 of RFC 2026. This memo also updates paragraph 4 of Section 3.2 of RFC 2028, for all purposes, including reference [2] in RFC 2418. RFC 3669 Title: Guidelines for Working Groups on Intellectual Property Issues Author(s): S. Brim Status: Informational Date: February 2004 Mailbox: sbrim@cisco.com Pages: 17 Characters: 40946 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-ipr-wg-guidelines-05.txt URL: ftp://ftp.rfc-editor.org/in-notes/rfc3669.txt This memo lays out a conceptual framework and rules of thumb useful for working groups dealing with Intellectual Property Rights (IPR) issues. It documents specific examples of how IPR issues have been dealt with in the IETF. -- Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 19 06:11:33 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA14262 for ; Thu, 19 Feb 2004 06:11:33 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Atm5D-0007wk-3w for avt-archive@odin.ietf.org; Thu, 19 Feb 2004 06:11:07 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1JBB7FD030485 for avt-archive@odin.ietf.org; Thu, 19 Feb 2004 06:11:07 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Atm58-0007v0-T2; Thu, 19 Feb 2004 06:11:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Atm4I-0007t8-W7 for avt@optimus.ietf.org; Thu, 19 Feb 2004 06:10:11 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA14201 for ; Thu, 19 Feb 2004 06:10:06 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Atm4F-0006A3-00 for avt@ietf.org; Thu, 19 Feb 2004 06:10:07 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Atm3I-00067f-00 for avt@ietf.org; Thu, 19 Feb 2004 06:09:09 -0500 Received: from mail.pel.panasonic.de ([194.162.191.12]) by ietf-mx with esmtp (Exim 4.12) id 1Atm2s-00065J-00 for avt@ietf.org; Thu, 19 Feb 2004 06:08:42 -0500 Received: from MCOMREYJ ([10.10.100.173]) by mail.pel.panasonic.de with Microsoft SMTPSVC(5.0.2195.6713); Thu, 19 Feb 2004 12:07:31 +0100 From: "Jose Rey" To: Date: Thu, 19 Feb 2004 12:07:42 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 Importance: Normal X-OriginalArrivalTime: 19 Feb 2004 11:07:31.0156 (UTC) FILETIME=[91892940:01C3F6D8] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] 3GPP Timed Text Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi all, at the 59th IETF I will have some time to give an update on the 3GPP Timed Text work. Since the last IETF there has been some offline discussion. The result of this activity and the comments received in the last meeting is reflected in the current draft: draft-rey-avt-3gpp-timed-text-02.txt. The main changes are: - modular header: similar to that in draft-ietf-avt-rtp-h264-xx.txt, where an the TYPE value specifies header composition. Take a look at section 4.2. - complex modifier headers have been removed: as a consequence payload format is simpler than in -01. As a consequence resiliency for modifier box fragments is reduced, as only complete modifier box contents are useful. For such fragments FEC, retransmission, repetition SHOULD be used. It is estimated that applying such measures is simpler than the previous headers. Check section 4.1. - text string fragments are always displayable as text strings. - coordination of the payload format structure to enable transport using MPEG simple (RFC3640). Looking forward to your comments, ------------------------------- Jose Rey Mobile Multimedia Group Panasonic European Labs GmbH D-63225 Langen, Germany Tel.:+49-6103-766-134 Fax :+49-6103-766-166 Email: rey@panasonic.de Visit: www.pel.panasonic.de ------------------------------- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 19 08:43:37 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id IAA18300 for ; Thu, 19 Feb 2004 08:43:37 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtoSK-0002KO-Hy for avt-archive@odin.ietf.org; Thu, 19 Feb 2004 08:43:08 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1JDh8wA008915 for avt-archive@odin.ietf.org; Thu, 19 Feb 2004 08:43:08 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtoSD-0002Ig-IY; Thu, 19 Feb 2004 08:43:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtjMe-0001mG-Qz for avt@optimus.ietf.org; Thu, 19 Feb 2004 03:16:56 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA04951 for ; Thu, 19 Feb 2004 03:16:55 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AtjMc-0003pE-00 for avt@ietf.org; Thu, 19 Feb 2004 03:16:54 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AtjLj-0003o0-00 for avt@ietf.org; Thu, 19 Feb 2004 03:16:00 -0500 Received: from laas.laas.fr ([140.93.0.15]) by ietf-mx with esmtp (Exim 4.12) id 1AtjKq-0003mC-00 for avt@ietf.org; Thu, 19 Feb 2004 03:15:04 -0500 Received: from mistral.laas.fr (mistral [195.83.132.79]) by laas.laas.fr (8.12.10/8.12.10) with ESMTP id i1J8F4fa021716 for ; Thu, 19 Feb 2004 09:15:04 +0100 (CET) Received: from localhost by mistral.laas.fr (8.9.1a/8.9.3) with ESMTP id JAA27496 for ; Thu, 19 Feb 2004 09:15:04 +0100 (MET) X-Authentication-Warning: mistral.laas.fr: fnivor owned process doing -bs Date: Thu, 19 Feb 2004 09:15:03 +0100 (MET) From: Frederic Nivor X-X-Sender: fnivor@mistral To: avt@ietf.org Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Spam-Score: 0 () X-Scanned-By: MIMEDefang at CNRS-LAAS X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Subject: [AVT] question about congestion control Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Hi, I want to know if RTP include some congestion control mechanisms in the specifications, or applications using RTP need to implement their own congestion control mechanisms ?? Thanks. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 19 09:03:32 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA18914 for ; Thu, 19 Feb 2004 09:03:32 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Atolc-0004J2-Oj for avt-archive@odin.ietf.org; Thu, 19 Feb 2004 09:03:04 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1JE34aI016552 for avt-archive@odin.ietf.org; Thu, 19 Feb 2004 09:03:04 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AtolZ-0004IQ-5Y; Thu, 19 Feb 2004 09:03:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Atokl-0004CI-EY for avt@optimus.ietf.org; Thu, 19 Feb 2004 09:02:11 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA18890 for ; Thu, 19 Feb 2004 09:02:08 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Atokj-0005lA-00 for avt@ietf.org; Thu, 19 Feb 2004 09:02:10 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Atojo-0005jU-00 for avt@ietf.org; Thu, 19 Feb 2004 09:01:12 -0500 Received: from albatross-ext.wise.edt.ericsson.se ([193.180.251.49]) by ietf-mx with esmtp (Exim 4.12) id 1Atoiq-0005hR-00 for avt@ietf.org; Thu, 19 Feb 2004 09:00:12 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by albatross-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1JE0AqY028301 for ; Thu, 19 Feb 2004 15:00:10 +0100 (MET) Received: from esealnt612.al.sw.ericsson.se ([153.88.254.118]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Thu, 19 Feb 2004 15:00:10 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt612.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FGDGTKW6; Thu, 19 Feb 2004 15:00:10 +0100 Message-ID: <4034C0D6.9020300@ericsson.com> Date: Thu, 19 Feb 2004 14:57:42 +0100 X-Sybari-Trust: af45b7e5 c77f3eb6 1886a979 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Frederic Nivor CC: avt@ietf.org Subject: Re: [AVT] question about congestion control References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 19 Feb 2004 14:00:10.0071 (UTC) FILETIME=[AFEE2670:01C3F6F0] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi Frederic, RTP/RTCP or any existing profile does not specify a congestion control algorithm to use, only that any data transmission should use it. With the intention that any transfers over best-effort networks without guaranteed QoS SHALL use congestion control. RTCP provides certain network related measurements that can be used to implement congestion control with. The AVT has very recently received a proposal to develop a profile for TFRC with RTP/RTCP. This will be discussed in Seoul in two weeks. So the bottom line is: Yes, the application needs to implement congestion control itself. To simplify the implementation effort of using congestion control is one of the reasons why DCCP is being developed. Cheers Magnus Frederic Nivor wrote: > Hi, I want to know if RTP include some congestion control mechanisms in > the specifications, or applications using RTP need to implement their > own > congestion control mechanisms ?? > Thanks. > > > _______________________________________________ > Audio/Video Transport Working Group > avt@ietf.org > https://www1.ietf.org/mailman/listinfo/avt > -- Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Fri Feb 20 10:28:41 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA28361 for ; Fri, 20 Feb 2004 10:28:41 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AuCZa-0001J6-T2 for avt-archive@odin.ietf.org; Fri, 20 Feb 2004 10:28:15 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1KFSEj0005023 for avt-archive@odin.ietf.org; Fri, 20 Feb 2004 10:28:14 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AuCZO-0001IJ-0G; Fri, 20 Feb 2004 10:28:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AuCZK-0001Hw-Fl for avt@optimus.ietf.org; Fri, 20 Feb 2004 10:27:58 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA28340 for ; Fri, 20 Feb 2004 10:27:54 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AuCZI-0001Vx-00 for avt@ietf.org; Fri, 20 Feb 2004 10:27:56 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AuCYL-0001TH-00 for avt@ietf.org; Fri, 20 Feb 2004 10:26:58 -0500 Received: from albatross-ext.wise.edt.ericsson.se ([193.180.251.49]) by ietf-mx with esmtp (Exim 4.12) id 1AuCXo-0001RC-00 for avt@ietf.org; Fri, 20 Feb 2004 10:26:24 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by albatross-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1KFQNqY014944 for ; Fri, 20 Feb 2004 16:26:24 +0100 (MET) Received: from esealnt611.al.sw.ericsson.se ([153.88.254.121]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Fri, 20 Feb 2004 16:26:23 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt611.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id 166CK1H6; Fri, 20 Feb 2004 16:26:44 +0100 Message-ID: <4036268A.8020702@ericsson.com> Date: Fri, 20 Feb 2004 16:23:54 +0100 X-Sybari-Trust: 713e1ba2 c77f3eb6 1886a979 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Ladan Gharai , IETF AVT WG Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 20 Feb 2004 15:26:23.0828 (UTC) FILETIME=[E6249140:01C3F7C5] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Comments on draft-gharai-avt-tfrc-profile-00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, This draft is a very interesting piece of work. It contains a number of interesting issues. Of which the first one is: Should we do this work in AVT? My personal opinion is that doing this is probably a good thing. I am not especially optimistic about a quick deployment of DCCP thus making it possible to use TFRC that way. I think that AVT is the right group for doing the profile as we know RTP and RTCP best. However we will need TFRC expertise to join AVT so that we don't miss some important limitation and ensure that TFRC will work well. This is all something that will need discussion with our AD. Before we can do this work we will need a recharter. Further issues that will need to be discussed is: - I think that using a profile for this is probably the right way. Not for the reason of the header changes which would make it required, rather for the signalling that both end points needs to support the feedback gathering and reporting correctly. This will clearly increase the number of profiles with 2-4 new profiles. The reason is that the old or on the way profiles needs to be expressed combined with congestion control. I would think that combinations with SRTP and AVPF is probably needed. - I think the header extensions proposed should be reconsidered. Adding extra overhead if not really needed is not a good thing. As also expressed in the draft there seems to be alternatives to the two fields. Transmission timestamp. First it is possible to use sender side measurements to perform the RTT measurements. Secondly the field does not need to be 32 bits. I think somewhere around 24-16 bits is sufficient. The only reason to add this field in my view seems to be the extended feedback it could provide. We could for example fix the jitter calculations by basing them on this field, instead of the display timestamp. The RTT field. To this field there are multiple alternatives. First, run RTCP XR RTT measurements in each RTCP packet from the receiver. Thus enabling the client to measure the RTT by itself. This would also be consistent if a receiver is a sender also. Second alternative would be to let the sender report the RTT to the receiver in each RTCP packet from the sender. - I think extending the receiver report is a bad choice. I think putting this extended report in another RTCP packet type is a better choice. One alternative to a new RTCP packet type would be to use XR, where there is a lot of extra code points. The reason I see for not changing the RTP or RTCP RR packets is that this will require more implementation change than using the other possibilities. This might not be an issues for the end-points as they will anyway need to add extensions to their implementations. However to destroy for 3rd party monitors seems to be a bad idea. Also the RTP header is already rather big, we should avoid making it bigger. - Further the changes in the timing rules will need to be more closely considered. The profile will basically require that one send at least one RTCP packet per RTT. Thus the normal RTCP bandwidth assignment rules goes mostly out of the window. Would also needs to consider how one can use bandwidth limits or something other to determine how often RTCP packets with more data can be sent. If one needs to send on RTCP every RTT the RTCP bandwidth becomes dependent on the RTCP packet size and the RTT only. Should some type of feedback path congestion control be included in this? Is it time to start sequence number the RTCP packets to determine the loss rate in the RTCP channel? - The proposal needs signalling for a number of attributes. This would also need to be worked out when we know what needs signalling. Based on this, I would say that this is a significant amount of work for the WG to undertake. Thus I would like to hear the opinion of the participants in the WG about it. Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 04:15:40 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA14698 for ; Mon, 23 Feb 2004 04:15:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvCBE-0004sT-Kg for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 04:15:13 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1N9FCbH018725 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 04:15:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvCA4-0004dH-Md; Mon, 23 Feb 2004 04:14:00 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AuSkQ-0005L2-Kq for avt@optimus.ietf.org; Sat, 21 Feb 2004 03:44:30 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA22382 for ; Sat, 21 Feb 2004 03:44:28 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AuSkO-0001eu-00 for avt@ietf.org; Sat, 21 Feb 2004 03:44:28 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AuSjR-0001b8-00 for avt@ietf.org; Sat, 21 Feb 2004 03:43:30 -0500 Received: from mail.zrz.tu-berlin.de ([130.149.4.15]) by ietf-mx with esmtp (Exim 4.12) id 1AuSiT-0001VT-00 for avt@ietf.org; Sat, 21 Feb 2004 03:42:29 -0500 Received: from localhost ([127.0.0.1] helo=mail.zrz.TU-Berlin.DE) by mail.zrz.tu-berlin.de with esmtp (exim-4.30-1) for id 1AuSi0-0006kA-K8; Sat, 21 Feb 2004 09:42:00 +0100 Received: from mail.zrz.TU-Berlin.DE ([130.149.4.15]) by mail.zrz.TU-Berlin.DE (MailMonitor for SMTP v1.2.2 ) ; Sat, 21 Feb 2004 09:42:00 +0100 (CET) Received: from mail.tkn.tu-berlin.de ([130.149.49.80]) by mail.zrz.tu-berlin.de with esmtp (exim-4.30-1) for id 1AuShz-0006jx-MK; Sat, 21 Feb 2004 09:41:59 +0100 Received: from almathea.tkn.tu-berlin.de (almathea.tkn.TU-Berlin.DE [130.149.49.56]) by mail.tkn.tu-berlin.de (Postfix) with ESMTP id 0D7B087361 for ; Sat, 21 Feb 2004 09:42:00 +0100 (CET) Received: from karl by almathea.tkn.tu-berlin.de with local (Exim 3.35 #1 (Debian)) id 1AuShz-0001pw-00 for ; Sat, 21 Feb 2004 09:41:59 +0100 To: avt@ietf.org Message-Id: From: Holger Karl Date: Sat, 21 Feb 2004 09:41:59 +0100 X-Virus-Scanned: Sophos MailMonitor on mail.zrz.tu-berlin.de; Sat, 21 Feb 2004 09:42:00 +0100 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Subject: [AVT] Call for Participation: WiOpt'04 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Apologies if you receive multiple copies of this call! ---------------------------------------------------------------------- CALL FOR PARTICIPATION *************************************************** * * * WiOpt '04 * * * * 2nd Workshop on Modeling and Optimization * * in Mobile, Ad Hoc and Wireless Networks * * * * March 24 - 26, 2004, Cambridge, UK * * * *************************************************** Workshop Website: http://www.cl.cam.ac.uk/Research/SRG/wiopt04/ This workshop is intended to bring together leading researchers from both academia and industry to present both foundations and practical methods and tools for modeling and optimisation of mobile and ad hoc networks. The workshop will bring together researchers studying optimisation issues of mobile networks from both the network performance and the mobile networking perspectives: * Mobile Network Optimisation: Applications and Algorithms * Performance characterisation and optimisation of mobile/wireless networks and systems * Protocol design (MAC, Routing) for optimal mobile network utilisation * Tools for network optimisation * Energy efficiency in mobile networks * Security and co-operation models for mobile networks * Pricing and incentives in mobile and ad hoc networks. The program committee has compiled an excellent program of 43 presentations, selected from over 180 submissions. You can find the program at the end of this call or at http://www.cl.cam.ac.uk/Research/SRG/wiopt04/program.html. IMPORTANT DATES: Early registration deadline - 1 March 2004 Late registration deadline - 12 March 2004 Workshop - 24 - 26 March 2004 LOCATION: The workshop will take place in Cambridge, United Kindom at New Hall College. Accommodation is available within the college and in hotels in Cambridge. The website has more information under http://www.cl.cam.ac.uk/Research/SRG/wiopt04/venue.html. REGISTRATION: To register, please download the registration form from http://www.cl.cam.ac.uk/Research/SRG/wiopt04/regis.html, fill it out and mail or fax it to the address shown on the webpage. Registration fee is £ 180 for early registration before March 1st, £ 225 for late registration before March 12. Space is limited, so please register soon! A limited number for student travel grants is available. Details can be found on the registration web page. PRELIMINARY PROGRAM: The program consists of 11 regular sessions, two plenary sessions and a poster session. Plenary Speakers: Bruce Hajek (University of Illinois at Urbana-Champaign, USA) Ian Akyildiz (Georgia Institute of Technology, USA) Regular Papers: Session 1: QoS Optimal Scheduling for Multimedia Traffic in a Wireless LAN Munish Goyal, Anurag Kumar, and Vinod Sharma An Efficient Scheduling Scheme for IEEE 802.11e Pierre Ansel, Qiang Ni, and Thierry Turletti Interference Control at Packet-level in Wireless Networks with Quality of Service Support Sami Ayyorgun and Rene L. Cruz Utility Based Data Service Differentiation for CDMA Data Networks Haitao Lin, Mainak Chatterjee, Sajal K. Das, and Kalyan Basu Session 2: Energy Management Minimum-Energy Broadcasting in Wireless Networks Using a Single Broadcast Tree Ioannis Papadimitriou and Leonidas Georgiadis Exact Solution of the Minimum Energy Broadcasting Problem in Ad Hoc Wireless Networks by Integer Programming Kemal Altinkemer, F. Sibel Salman, and Prashant Bellur Complexity of Minimum Spanning Tree in Evolving Graphs and the Minimum-Energy Broadcast Routing Problem Afonso Ferreira and Aubin Jarry Bounds on the Energy Consumption of Routings in Wireless Sensor Networks Juan Alonso, Adam Dunkels, and Thiemo Voigt Session 3: Cellular Networks Transport Level Optimisations for Streaming Media Over Wide-area Wireless Networks Julian Chesterfield, Rajiv Chakravorty, Suman Banerjee, Pablo Rodriguez, and Ian Pratt Cell Reselection Interarrival Time Investigation for GPRS Roger Kalden and Bart Sanders Minimum Cost Paging for Multi-System Wireless Networks Abhishek Roy, Archan Misra, and Sajal K. Das Integer Programming Methods for UMTS Radio Network Planning Andreas Eisenblaetter, Atesio Armin Fuegenschuh, Hans-Florian Geerdes, Daniel Junglas, Thorsten Koch, and Alexander Martin Session 4: Ad-Hoc Networks I Enhancing SWAN QoS Model By Adopting Destination-Based Regulation (ESWAN) Yasser L. Morgan and Thomas Kunz QoS-Aware Segmented Backup Source Routing in Mobile Ad Hoc Networks Ajay Agarwal Connectivity in Ad-Hoc Networks: a Queueing Theoretical Approach Daniele Miorandi and Eitan Altman Study of Connectivity in Wireless Ad-Hoc Networks with an Improved Radio Model R. Hekmat and P. Van Mieghem CDMA & Multicarrier Systems Throughput Optimization of Dynamic OFDM-FDMA Systems with Inband Signaling James Gross, Holger Karl, and Adam Wolisz Pilot Power Optimization in WCDMA Networks Iana Siomina and Di Yuan 3G-WCDMA Downlink Capacity Analysis and Optimisation with Multi-Carrier Deployment Ridha Nasri and Mongi Marzoug Joint Scheduling and Resource Allocation in CDMA Systems Rajeev Agrawal, Vijay Subramanian, and Randall Berry Session 6: Sensor Networks Exploiting Mobility for Energy Efficient Data Collection in Sensor Networks Sushant Jain, Rahul Shah, Waylon Brunette, Gaetano Borriello, and Sumit Roy Distributed Self-Tuning of Sensor Networks Aditya Karnik, Anurag Kumar, and Vivek Borkar Decentralized Utility-based Sensor Network Design Narayanan Sadagopan and Bhaskar Krishnamachari Network Devolution and the Growth of Sensory Lacunae in Sensor Networks Srisankar S. Kunniyur and Santosh S. Venkatesh Infrastructure WLANs Asymptotics for Provisioning Problems of Peering Wireless LANs with a Large Number of Participants Costas Courcoubetis and Richard Weber Saving Energy in Wi-Fi Hotspots through 802.11 PSM: An Analytical Model G. Anastasi, M. Conti, E. Gregori, and A. Passarella Energy Efficient Scheduler Design in Wireless Networks Jeongjoon Lee, Catherine Rosenberg, and Edwin K. P. Chong Fuelling WiFi Deployment : A Reputation-based Solution Naouel Ben Salem, Jean-Pierre Hubaux, and Markus Jakobsson Session 8: Performance Optimization Optimal Power Control over Multiple Time-Scale Fading Channels with Service Outage Constraints Subhrakanti Dey and Jamie Evans Wireless Link Scheduling with Power Control Steven A. Borbash and Anthony Ephremides An Energy-Optimal Algorithm for Neighbor Discovery in Wireless Sensor Networks Ritesh Madan, Sanjay Lall On-line Optimal Wireless Multicast Prasanna Chaporkar and Saswati Sarkar Session 9: Game-Theoretic Models A Game-Theoretic Look at Simple Relay Channel Yalin Evren Sagduyu and Anthony Ephremides Random Access in Wireless Ad Hoc Networks as a Distributed Game Vivek S. Borkar and Arzad A. Kherani Self-Optimisation of Sensor Networks as a Game Aditya Karnik and Anurag Kumar Auction-based Spectrum Sharing Jianwei Huang, Randall Berry and Michael L. Honig Session 10: Performance Modeling Model-based Loss Inference by TCP over Heterogeneous Networks Dhiman Barman and Ibrahim Matta Asymptotic Analysis of a Peer Enhanced Cache Invalidation Scheme Julee Pandya, Prasant Mohapatra, and Dipak Ghosal A Modeling Framework for Computing Lifetime and Information Capacity in Wireless Sensor Networks Enrique J. Duarte-Melo, Mingyan Liu, and Archan Misra Analysis of an Effective Priority Scheme to Support QoS Provisioning for Multicasting in Mobile Wireless Networks Koji Miyazaki and Wuyi Yue Session 11: Ad-Hoc Networks II On Achievable Delay/Capacity Trade-offs in Mobile Ad Hoc Networks Gaurav Sharma and Ravi R. Mazumdar Relaying in Mobile Ad-Hoc Networks R. Groenevelt, E. Altman, and P. Nain Analysis of Bandwidth Allocation Algorithms for Bluetooth Wireless Personal Area Networks Randeep Bhatia, Adrian Segall, and Gil Zussman ORGANIZATION: General chairman: Imrich Chlamtac Vice General Chair: Roger Whitaker Program Co-Chairs: Marco Conti and Tamer Basar Program committee of the conference: Eitan Altman, Venkat Anantharam, Konstantin Avrachenkov, Andrew Campbell, X. Cao, A. Chockalingam, Jon Crowcroft, Anthony Ephremides, Silvia Giordano, Stephen V. Hanly, Jean-Pierre Hubaux, Holger Karl, Peter Key, P. R. Kumar, Peter Marbach, Derek Mcauley, Archan Misra, Philippe Nain, Sven Oestring, Yoshikuni Onozato, Ariel Orda, Ramesh Rao, Catherine Rosenberg, Ness Shroff, Violet Syrotiuk, Thierry Turletti, Adam Wolisz, Jeff Wieselthier, Moshe Zukerman Local Arrangements Co-Chair: Sven Oestring, Julian Chesterfield and Rajiv Chakravorty Treasurer: Meng How Lim Publicity Chair: Holger Karl The workshop is co-sponsored by * Univ. of Cambridge * IIT (Istituto di Informatica e Telematica) * IEEE IT Society (technical co-sponsorship) * INRIA * Euro NGI * CREATE-NET Additional financial support is provided by: * Intel * Microsoft Research _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 04:15:46 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA14733 for ; Mon, 23 Feb 2004 04:15:46 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvCBE-0004sR-K3 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 04:15:19 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1N9FCbo018724 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 04:15:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvCA5-0004dP-Hr; Mon, 23 Feb 2004 04:14:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Auhqj-0007cl-0R for avt@optimus.ietf.org; Sat, 21 Feb 2004 19:52:01 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id TAA23010 for ; Sat, 21 Feb 2004 19:51:59 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Auhqh-00051S-00 for avt@ietf.org; Sat, 21 Feb 2004 19:51:59 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Auhpn-0004yg-00 for avt@ietf.org; Sat, 21 Feb 2004 19:51:04 -0500 Received: from orion.lrg.ufsc.br ([150.162.63.1]) by ietf-mx with esmtp (Exim 4.12) id 1Auhor-0004vK-00; Sat, 21 Feb 2004 19:50:05 -0500 Received: by orion.lrg.ufsc.br (Postfix, from userid 3002) id 38FDAA2A6; Sat, 21 Feb 2004 22:51:05 -0400 (WST) Received: from localhost (localhost [127.0.0.1]) by orion.lrg.ufsc.br (Postfix) with ESMTP id E0F04DD6D; Sat, 21 Feb 2004 22:51:04 -0400 (WST) Date: Sat, 21 Feb 2004 22:51:04 -0400 (WST) From: Carlos Becker Westphall To: jwkhong@postech.ac.kr Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Subject: [AVT] [ieee-cnom] NOMS 2004 Early-Bird Registration Due Extended to Feb. 29, 2004 (fwd) Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , We apologize if you receive multiple copies of this message. NOMS 2004 OC has decided to extend the Early-Bird Registration Due Date to **Feb. 29, 2004** in order to encourage more participants to attend at low, discounted fee. Please pass this message to your colleagues and students. The detail information can be found on the NOMS 2004 homepage (http://www.noms2004.org). -------------------------------------------------------------------------- Join us in Seoul, Korea for the 9th IEEE/IFIP Network Operations and Management Symposium (NOMS 2004) which will be held 19-23 April, 2004 in COEX Convention Center, Seoul, Korea. NOMS 2004 will feature the following on various network and service management topics: * 15 technical sessions * 5 panel sessions * 6 keynote speeches * 12 tutorials * 2 poster sessions * Exbitions by vendors and service providers Featured for the first time - Application Sessions on - Next Generation OSS - OSS Platforms - QoS and Service Management - Policy and Security Management The advance program, registration and hotel booking can all be found on the NOMS 2004 home page (www.noms2004.org ) Don't delay - register now for a greatly discounted early-bird rate. NOMS 2004 19-23 April, 2004 COEX, Convention Center, Seoul, Korea www.noms2004.org -- ---------------------------------------------------------------------------- James Won-Ki Hong, PhD, Associate Professor Dept. of Computer Science & Engineering, POSTECH, Pohang Korea 790-784 Tel: +82-54-279-2244 Fax: +82-54-279-5663 Mobile: +82-11-810-5641 Email: jwkhong@postech.ac.kr http://dpnm.postech.ac.kr/~jwkhong/ KNOM Chair: http://www.knom.or.kr NOMS 2004: http://www.noms2004.org IEEE ComSoc CNOM Vice Chair: http://www.comsoc.org/~cnomwww/ IEEE ComSoc Director of Online Content: http://www.comsoc.org/socstr/org/bog/officers/2004/ ---------------------------------------------------------------------------- _______________________________________________ Cnom mailing list Cnom@orion.lrg.ufsc.br http://orion.lrg.ufsc.br/mailman/listinfo/cnom _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 05:17:32 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA17545 for ; Mon, 23 Feb 2004 05:17:32 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvD97-0001Ru-7Z for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 05:17:05 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1NAH511005565 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 05:17:05 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvD93-0001QQ-AF; Mon, 23 Feb 2004 05:17:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvD88-00010t-Op for avt@optimus.ietf.org; Mon, 23 Feb 2004 05:16:04 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA17482 for ; Mon, 23 Feb 2004 05:16:01 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvD85-0004tW-00 for avt@ietf.org; Mon, 23 Feb 2004 05:16:01 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvD76-0004pe-00 for avt@ietf.org; Mon, 23 Feb 2004 05:15:01 -0500 Received: from eagle.ericsson.se ([193.180.251.53]) by ietf-mx with esmtp (Exim 4.12) id 1AvD6E-0004mT-00; Mon, 23 Feb 2004 05:14:06 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by eagle.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1NAE7Ah005975; Mon, 23 Feb 2004 11:14:07 +0100 Received: from esealnt610.al.sw.ericsson.se ([153.88.254.120]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Mon, 23 Feb 2004 11:14:06 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt610.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FMFLNRM4; Mon, 23 Feb 2004 11:14:13 +0100 Message-ID: <4039D1D3.9030109@ericsson.com> Date: Mon, 23 Feb 2004 11:11:31 +0100 X-Sybari-Trust: f554d453 c77f3eb6 eb01e110 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Amir Wolf , "mmusic (E-mail)" , IETF AVT WG References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 23 Feb 2004 10:14:06.0975 (UTC) FILETIME=[C558F0F0:01C3F9F5] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Re: [MMUSIC] draft-ietf-avt-rtp-h264-03.doc question Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi Amir, This question belong to the AVT mailing list not MMUSIC. If you respond please exclude the MMUSIC list. The reason for not allowing the usage of single NAL unit packets and STAP-As in Interleaved mode is that they do not contain Decoding Order Numbers. To avoid the inconsistencies with some NALU having DON and other not, this restriction is in place. You will have to use STAP-B in interleaved mode to send a single NALU. This is the overhead you will have to pay for using interleaving mode. I hope that clarifies things. Cheers Magnus Amir Wolf wrote: > Hi All, > I have one question about the above draft related to packetization-mode. > The draft specifies that when packetization-mode is set to 2 > > single NAL unit packets and STAP-As MUST NOT be present in the stream. > > I really don't understand this limitation, It is possible for a server > to use MTAP when having small frames, though aggregating several frames > in one RTP packet to fill the MTU size. > > On the other hand, when getting a large frame, The server may use STAP-A > and not STAP-B to reduce overheads. > > Am I missing something? > > Thanks > > Amir wolf > > Direct: +972-9-7699386 > > Mobile: +972-55-509035 > > Fax: +972 9 7699 373 > > EMBLAZE Systems,Ltd. www.emblaze.com > > 22 Zarhin St. Raanana 43662, ISRAEL > > > -- Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 05:19:32 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA17702 for ; Mon, 23 Feb 2004 05:19:32 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvDB3-0001fN-7O for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 05:19:05 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1NAJ5Di006405 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 05:19:05 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvDB0-0001eg-8R; Mon, 23 Feb 2004 05:19:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvDAF-0001cx-7Z for avt@optimus.ietf.org; Mon, 23 Feb 2004 05:18:15 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA17594 for ; Mon, 23 Feb 2004 05:18:11 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvDAB-00055P-00 for avt@ietf.org; Mon, 23 Feb 2004 05:18:12 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvD9H-00050Q-00 for avt@ietf.org; Mon, 23 Feb 2004 05:17:16 -0500 Received: from ip72.usw232.dsl-acs2.sea.iinet.com ([209.20.232.72] helo=bels002.mediator.com) by ietf-mx with esmtp (Exim 4.12) id 1AvD8U-0004ri-00 for avt@ietf.org; Mon, 23 Feb 2004 05:16:26 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.0.5762.3 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----_=_NextPart_001_01C3F9F6.06D222CC" Date: Mon, 23 Feb 2004 02:15:56 -0800 Message-ID: <787ED0EC136B854DB341E7662D666CD6620352@bels002.mediator.com> X-MS-Has-Attach: yes Thread-Topic: I-D ACTION:draft-perkins-avt-rtp-reactive-fec-00.txt Thread-Index: AcPbr+Cf0XrD28KRSzG6ekplMq0c2AeRURJA From: "Gamze Seckin" To: X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Subject: [AVT] rtp retransmission Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. ------_=_NextPart_001_01C3F9F6.06D222CC Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Colin, what is the relation of the below draft to = draft-ietf-avt-rtp-retransmission-10.txt ? thanks & br, gamze -----Original Message----- From: Internet-Drafts@ietf.org [mailto:Internet-Drafts@ietf.org] Sent: Thursday, January 15, 2004 10:10 PM Subject: I-D ACTION:draft-perkins-avt-rtp-reactive-fec-00.txt A New Internet-Draft is available from the on-line Internet-Drafts = directories. Title : RTP Retransmission Using Reactive FEC Author(s) : C. Perkins Filename : draft-perkins-avt-rtp-reactive-fec-00.txt Pages : 8 Date : 2004-1-15 =09 This memo describes how the RTP Payload Format for Generic Forward Error Correction can be combined with the Extended RTP Profile for RTCP-based Feedback to provide a solution for retransmission of lost RTP packets. Such a retransmission format is expected to be useful to improve the reliability of real-time applications with relaxed delay bounds, for example non-interactive streaming audio/video. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-perkins-avt-rtp-reactive-fec-00= .txt To remove yourself from the IETF Announcement list, send a message to=20 ietf-announce-request with the word unsubscribe in the body of the = message. Internet-Drafts are also available by anonymous FTP. Login with the = username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-perkins-avt-rtp-reactive-fec-00.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html=20 or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-perkins-avt-rtp-reactive-fec-00.txt". =09 NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. =09 =09 Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. ------_=_NextPart_001_01C3F9F6.06D222CC Content-Type: application/octet-stream; name="ATT463318.TXT" Content-Description: ATT463318.TXT Content-Disposition: attachment; filename="ATT463318.TXT" Content-Transfer-Encoding: base64 Q29udGVudC1UeXBlOiBNZXNzYWdlL0V4dGVybmFsLWJvZHk7DQoJYWNjZXNzLXR5cGU9Im1haWwt c2VydmVyIjsNCglzZXJ2ZXI9Im1haWxzZXJ2QGlldGYub3JnIg0KDQpDb250ZW50LVR5cGU6IHRl eHQvcGxhaW4NCkNvbnRlbnQtSUQ6CTwyMDA0LTEtMTUxNTI0NTUuSS1EQGlldGYub3JnPg0KDQpF TkNPRElORyBtaW1lDQpGSUxFIC9pbnRlcm5ldC1kcmFmdHMvZHJhZnQtcGVya2lucy1hdnQtcnRw LXJlYWN0aXZlLWZlYy0wMC50eHQNCg== ------_=_NextPart_001_01C3F9F6.06D222CC Content-Type: application/octet-stream; name="draft-perkins-avt-rtp-reactive-fec-00.URL" Content-Description: draft-perkins-avt-rtp-reactive-fec-00.URL Content-Disposition: attachment; filename="draft-perkins-avt-rtp-reactive-fec-00.URL" Content-Transfer-Encoding: base64 W0ludGVybmV0U2hvcnRjdXRdDQpVUkw9ZnRwOi8vZnRwLmlldGYub3JnL2ludGVybmV0LWRyYWZ0 cy9kcmFmdC1wZXJraW5zLWF2dC1ydHAtcmVhY3RpdmUtZmVjLTAwLnR4dA0K ------_=_NextPart_001_01C3F9F6.06D222CC-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 05:31:11 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA18048 for ; Mon, 23 Feb 2004 05:31:11 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvDML-0002dx-1M for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 05:30:45 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1NAUiko010109 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 05:30:45 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvDLd-0002Ka-Gg; Mon, 23 Feb 2004 05:30:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvDKm-0002JX-Gm for avt@optimus.ietf.org; Mon, 23 Feb 2004 05:29:08 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA17954 for ; Mon, 23 Feb 2004 05:29:04 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvDKj-0005lB-00 for avt@ietf.org; Mon, 23 Feb 2004 05:29:05 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvDJm-0005ga-00 for avt@ietf.org; Mon, 23 Feb 2004 05:28:06 -0500 Received: from dundee.dcs.gla.ac.uk ([130.209.242.163]) by ietf-mx with esmtp (Exim 4.12) id 1AvDIn-0005Yk-00 for avt@ietf.org; Mon, 23 Feb 2004 05:27:05 -0500 Received: from spaatz ([130.209.242.185]:51843 helo=[10.0.0.56]) by dundee.dcs.gla.ac.uk with asmtp (TLSv1:RC4-SHA:128) (Exim 4.04) id 1AvDIJ-0004hw-00; Mon, 23 Feb 2004 10:26:35 +0000 In-Reply-To: <787ED0EC136B854DB341E7662D666CD6620352@bels002.mediator.com> References: <787ED0EC136B854DB341E7662D666CD6620352@bels002.mediator.com> Mime-Version: 1.0 (Apple Message framework v612) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: Content-Transfer-Encoding: 7bit Cc: IETF AVT working group From: Colin Perkins Subject: Re: [AVT] rtp retransmission Date: Mon, 23 Feb 2004 10:26:33 +0000 To: "Gamze Seckin" X-Mailer: Apple Mail (2.612) X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit On 23 Feb 2004, at 10:15, Gamze Seckin wrote: > what is the relation of the below draft to > draft-ietf-avt-rtp-retransmission-10.txt ? My draft was an alternative proposal, as an attempt to avoid some of the IPR issues associated with the retransmission proposal. Colin _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 07:42:34 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA22069 for ; Mon, 23 Feb 2004 07:42:34 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvFPS-0003be-6c for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 07:42:06 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1NCg6g8013861 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 07:42:06 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvFPN-0003b1-QQ; Mon, 23 Feb 2004 07:42:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvFOe-0003a9-DE for avt@optimus.ietf.org; Mon, 23 Feb 2004 07:41:16 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA21996 for ; Mon, 23 Feb 2004 07:41:14 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvFOd-0005qi-00 for avt@ietf.org; Mon, 23 Feb 2004 07:41:15 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvFNj-0005nF-00 for avt@ietf.org; Mon, 23 Feb 2004 07:40:20 -0500 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47]) by ietf-mx with esmtp (Exim 4.12) id 1AvFNS-0005je-00 for avt@ietf.org; Mon, 23 Feb 2004 07:40:03 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by penguin-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1NCe1YG024227 for ; Mon, 23 Feb 2004 13:40:01 +0100 (MET) Received: from esealnt612.al.sw.ericsson.se ([153.88.254.118]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Mon, 23 Feb 2004 13:40:01 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt612.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FKWDKPJ6; Mon, 23 Feb 2004 13:40:01 +0100 Message-ID: <4039F405.4000906@ericsson.com> Date: Mon, 23 Feb 2004 13:37:25 +0100 X-Sybari-Trust: 6e4bcec9 c77f3eb6 eb01e110 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Amir Wolf CC: IETF AVT WG References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 23 Feb 2004 12:40:01.0113 (UTC) FILETIME=[27386490:01C3FA0A] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Re: draft-ietf-avt-rtp-h264-03.doc question Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi Amir, Comments inlie, I would also like to point out that the lastes H.264 draft is version 04. Amir Wolf wrote: > Hi Magnus, > I understand, but I think it's wrong. > As any rtp packet contains the packetization method of the packet, I > think we should enable an option that supports all packetization > methods. The problem is not deciding how a NALU is packetized. The problem is that for making the interleaved mode work, all NALUs on the receiver side must have a DON. We authors has considered if we could solve it by some rule on how to determine the DON for NALUs lacking a DON. However we could not find a relatively simple rule that would work satisfactory without restricting which NALUs that could be sent around it. Thus we selected to use the explicit and guaranteed to work method of requiring all NALUs to be assigned a DON by the sender and having it transported in the packet types that support such transport. If you can write such a rule, we would welcome it. > In addition, rfc 3016 enables aggregation of frames in one RTP packet > for MPEG4, I don't see why not making it possible for AVC without > special signaling. Aggregation is supported in both Non-Interleaved and Interleaved Mode. The single NALU mode does not support aggregation due its intention of being very simple. Also the single NALU mode is sufficient for certain use cases and applications. I understand that there is other use cases where aggregation is necessary. However due to the wide area of applications that the payload format is intended to support, we can't mandate that all functionality is implemented by all applications, while only a few needs certain application sets. The reason for making Single NALU mandatory is to ensure that at least on packetization mode is common for all applications that needs to negotiate. Those are the reasons why we have the Single NALU mode mandatory, Non-Interleave Recommended and Interleaved as optional. It is up to a certain application to decide what is appropriate for the application and in that context determine what modes that should or should not be implemented. If an application requires interleaving to work satisfactory, it is up to that application specification to make interleaving mandatory. > As 3GPP are going to adopt the above draft stating that Single NUL unit > mode will be mandatory, Non-Interleaved mode - Recommended and > Interleaved mode will be optional - We are loosing here one of the most > advantages of the AVC. If 3GPP in one of its applications needs aggregation, then make aggregation mandatory to implement. This is up to 3GPP to determine what there application requires. In fact I think that the 3GPP SA4 meeting will be discussing this very issue this week. If you look at the proposals over which packetization modes that will be required, some company proposes only single NALU mode, while others proposes either of the two others. Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 07:55:33 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA22617 for ; Mon, 23 Feb 2004 07:55:33 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvFc0-00049x-Q6 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 07:55:05 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1NCt4NR015959 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 07:55:04 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvFbz-00048r-CJ; Mon, 23 Feb 2004 07:55:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvE2V-0005o3-5I for avt@optimus.ietf.org; Mon, 23 Feb 2004 06:14:19 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA19478 for ; Mon, 23 Feb 2004 06:14:14 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvE2R-0000lw-00 for avt@ietf.org; Mon, 23 Feb 2004 06:14:15 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvE1V-0000hL-00 for avt@ietf.org; Mon, 23 Feb 2004 06:13:18 -0500 Received: from [212.68.150.1] (helo=embexcil02.emblaze.ent) by ietf-mx with esmtp (Exim 4.12) id 1AvE0r-0000bx-00 for avt@ietf.org; Mon, 23 Feb 2004 06:12:37 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable Date: Mon, 23 Feb 2004 13:13:18 +0200 Message-ID: Thread-Topic: [MMUSIC] draft-ietf-avt-rtp-h264-03.doc question Thread-Index: AcP59fDBOLOJnpe6TfCUO/2zem7LnAABoZfg From: "Amir Wolf" To: "Magnus Westerlund" , "IETF AVT WG" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Subject: [AVT] RE: draft-ietf-avt-rtp-h264-03.doc question Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Hi Magnus, I understand, but I think it's wrong. As any rtp packet contains the packetization method of the packet, I = think we should enable an option that supports all packetization = methods. In addition, rfc 3016 enables aggregation of frames in one RTP packet = for MPEG4, I don't see why not making it possible for AVC without = special signaling. As 3GPP are going to adopt the above draft stating that Single NUL unit = mode will be mandatory, Non-Interleaved mode - Recommended and = Interleaved mode will be optional - We are loosing here one of the most = advantages of the AVC. Amir > -----Original Message----- > From: Magnus Westerlund [mailto:magnus.westerlund@ericsson.com] > Sent: Monday, February 23, 2004 12:12 PM > To: Amir Wolf; mmusic (E-mail); IETF AVT WG > Subject: Re: [MMUSIC] draft-ietf-avt-rtp-h264-03.doc question >=20 >=20 > Hi Amir, >=20 > This question belong to the AVT mailing list not MMUSIC. If=20 > you respond=20 > please exclude the MMUSIC list. >=20 > The reason for not allowing the usage of single NAL unit packets and=20 > STAP-As in Interleaved mode is that they do not contain=20 > Decoding Order=20 > Numbers. To avoid the inconsistencies with some NALU having DON and=20 > other not, this restriction is in place. You will have to use=20 > STAP-B in=20 > interleaved mode to send a single NALU. This is the overhead you will=20 > have to pay for using interleaving mode. >=20 > I hope that clarifies things. >=20 > Cheers >=20 > Magnus >=20 > Amir Wolf wrote: > > Hi All, > > I have one question about the above draft related to=20 > packetization-mode. > > The draft specifies that when packetization-mode is set to 2=20 > >=20 > > single NAL unit packets and STAP-As MUST NOT be present in=20 > the stream. > >=20 > > I really don't understand this limitation, It is possible=20 > for a server > > to use MTAP when having small frames, though aggregating=20 > several frames > > in one RTP packet to fill the MTU size. > >=20 > > On the other hand, when getting a large frame, The server=20 > may use STAP-A > > and not STAP-B to reduce overheads. > >=20 > > Am I missing something? > >=20 > > Thanks=20 > >=20 > > Amir wolf > >=20 > > Direct: +972-9-7699386 > >=20 > > Mobile: +972-55-509035 > >=20 > > Fax: +972 9 7699 373 > >=20 > > EMBLAZE Systems,Ltd. www.emblaze.com > >=20 > > 22 Zarhin St. Raanana 43662, ISRAEL > >=20 > > =20 > >=20 >=20 > --=20 >=20 > Magnus Westerlund >=20 > Multimedia Technologies, Ericsson Research EAB/TVA/A > ---------------------------------------------------------------------- > Ericsson AB | Phone +46 8 4048287 > Torshamsgatan 23 | Fax +46 8 7575550 > S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com >=20 >=20 > This communication is confidential and intended solely for=20 > the addressee(s). Any unauthorized review, use, disclosure or=20 > distribution is prohibited. If you believe this message has=20 > been sent to you in error, please notify the sender by=20 > replying to this transmission and delete the message without=20 > disclosing it. Thank you. >=20 > E-mail including attachments is susceptible to data=20 > corruption, interruption, unauthorized amendment, tampering=20 > and viruses, and we only send and receive e-mails on the=20 > basis that we are not liable for any such corruption,=20 > interception, amendment, tampering or viruses or any=20 > consequences thereof. >=20 >=20 _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 08:17:36 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id IAA23534 for ; Mon, 23 Feb 2004 08:17:36 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvFxK-0005oZ-Pw for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 08:17:08 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1NDH6EW022350 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 08:17:06 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvFxF-0005nw-QZ; Mon, 23 Feb 2004 08:17:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvFww-0005nO-SO for avt@optimus.ietf.org; Mon, 23 Feb 2004 08:16:43 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id IAA23455 for ; Mon, 23 Feb 2004 08:16:40 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvFwv-00013O-00 for avt@ietf.org; Mon, 23 Feb 2004 08:16:41 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvFw7-0000vY-00 for avt@ietf.org; Mon, 23 Feb 2004 08:15:52 -0500 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47]) by ietf-mx with esmtp (Exim 4.12) id 1AvFvO-0000mN-00 for avt@ietf.org; Mon, 23 Feb 2004 08:15:07 -0500 Received: from esealmw143.al.sw.ericsson.se ([153.88.254.118]) by penguin-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1NDF5YG002692 for ; Mon, 23 Feb 2004 14:15:05 +0100 (MET) Received: from esealnt610.al.sw.ericsson.se ([153.88.254.120]) by esealmw143.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Mon, 23 Feb 2004 14:15:05 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt610.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FMFLPP9Q; Mon, 23 Feb 2004 14:15:12 +0100 Message-ID: <4039FC3E.2080109@ericsson.com> Date: Mon, 23 Feb 2004 14:12:30 +0100 X-Sybari-Trust: 9a8abec3 c77f3eb6 eb01e110 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Matthew Romaine CC: avt@ietf.org, Mitsuyuki Hatanaka , Jun Matsumoto References: <1CDE927C-61CA-11D8-A1E4-000393CC2B7A@jp.sony.com> In-Reply-To: <1CDE927C-61CA-11D8-A1E4-000393CC2B7A@jp.sony.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 23 Feb 2004 13:15:05.0503 (UTC) FILETIME=[0D88D2F0:01C3FA0F] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Re: ATRAC Family Payload update Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi Matthew, Here is some comments on the proposed update. Matthew Romaine wrote: > Magnus and the avt crew, > > I have compiled comments thus far regarding the new ATRAC payload > format, and have attempted to resolve each issue. Please let me know > if the responses are heading in the right direction. > > Magnus wrote: "There is need to resolve how the setup signalling for > this payload format will work. The normal model is that one defines a > MIME type..." > > A few new sections have been added to the draft, which I have inserted > below. Is this along the lines of what is needed? Yes, you definitely need a MIME registration. More comments about details inline. In general I thing all the required parameters needs a bit more text. > > 5.1 ATRAC Family MIME Registraion > > The MIME subtype for the Adaptive TRansform Codec Family (ATRAC > Family) is allocated from the Vendor tree since ATRAC is intended to > be used with commercial products, and use of ATRAC requires a license > from Sony Corporation, the vendor. > > Note, any unspecified parameter MUST be ignored by the receiver. > > Media Type name: audio > Media subtype name: ATRACFAMILY > Required parameters: > profile: ATRAC, ATRAC3, ATRAC-X > frameSampleSize: 512, 1024, 2048 > sampleRate: 32000, 44100, 48000, 88100, 96000 > frameLength: [license required] > channels: 1, 2, 3, 4, 5, 6, 7, 8 > The question is if it would be a better alternative to define three MIME types, one for each of the profiles. I assume that you have plans to allow for new profiles, thus one needs to consider backwards compatibility etc. In this case it is probably easier to define one MIME type for each profile. Thus a receiver will not need to look into FMTP line to know if it supports the codec profile or not. One will also avoid having backwards compatibility issues for any new codec if it needs new parameters. Having a parameter that requires license does not look good in my eyes. It needs to at least define what possible values that it can have. If the exact values are secret defines what range that is allowed. Also does a specific channel assignment rule for the number exist? Are you using the one in RFC 3551 with extension for 7 and 8 channels? Also I think you should consider how you intend to use the frame sample size and the frame length parameters. In what directions does they in fact apply between a sender and receiver? > Optional parameters: > maxptime: The maximum amount of media which can be encapsulated in > a payload packet, expressed as time in milliseconds. The time is > calculated as the sum of the time the media present in the packet > represents. The time SHOULD be a multiple of the frame size. If > this parameter is not present, the sender MAY encapsulate a > maximum of 16 encoded frames into one RTP packet. > > ptime: see RFC2327 [2] > > Encoding considerations: > This type is defined for transfer via RTP (RFC 1889). The RTP reference to use is RFC 3550. > > File extensions: at1, atr, at3, atx Are you registering a file format at the same time. The file extension is in relation to the a file format registration. I think you will need to clarify how the file format part relates to the RTP payload. > Macintosh file type code: none > Object identifier or OID: none > > Intended usage: LIMITED USE > Only licensees of ATRAC technology may use this type. > > 5.2 Mapping MIME Parameters into SDP > > The information carried in the MIME media type specification has a > specific mapping to fields in the Session Description Protocol (SDP) > [2], which is commonly used to describe RTP sessions. When SDP is > used to specify sessions employing the ATRAC family of codecs, the > mapping is as follows: > > - The MIME type ("audio") goes in SDP "m=" as the media name > > - The MIME subtype (payload format name) goes in SDP "a=rtpmap" as > the encoding name. The RTP clock rate in "a=rtpmap" MUST be as > indicated in the required parameter "sampleRate". No, I would specify this the other way. The MIME parameter sampleRate goes as the RTP clock rate in the "a=rtpmap" attribute. Also the channels should probably go in "rtpmap" attribute as an the first encoding parameter. How common is it expected to change the number of channels in a RTP stream, i.e. for the same SSRC? If it possible to change at all, have you considered the problems, see my mail about this. http://www1.ietf.org/mail-archive/working-groups/avt/current/msg03384.html > > - The parameters "ptime" and "maxptime" go in the SDP "a=ptime" and > "a=maxptime" attributes, respectively. > > - Any remaining parameters go in the SDP "a=fmtp" attribute by > copying them directly from the MIME media type string as a > semicolon separated list of parameter=value pairs. > > Some example SDP session descriptions utilizing ATRAC encodings > follow. In these examples, long a=fmtp lines are folded to meet the > column width constraints of this document; the backslash ("\") at the > end of a line and the carriage return that follows it should be > ignored. > > Example usage of ATRAC with stereo at 44100Hz encoded with ATRAC3: > > m = audio 49120 RTP/AVP 99 > a = rtpmap:99 ATRACFAMILY/44100 > a = fmtp:99 profile=ATRAC3; frameSampleSize=1024; frameLength=312; > \ > channels=2 > a = maxptime:20 > > Example usage of ATRAC with 5.1 setup at 48000Hz encoded with > ATRAC-X: > > m = audio 49120 RTP/AVP 99 > a = rtpmap:99 ATRACFAMILY/48000 > a = fmtp:99 profile=ATRAC-X; frameSampleSize=2048; \ > frameLength=1156; channels=6 > a = maxptime:50 > > > > (An Offer/Answer Model consideration is still being drafted.) Yes, this one will be very important, especially as you have a number of required parameters. > > Magnus wrote: "I would like to see some more information about the > codecs in the beginning of the draft. Especially properties like, > possible sampling frequency, multi-channel support, frame sizes, etc. > which effects the payload design." > > Here is how the details section in the introduction now reads: > > Early versions of the ATRAC codec handled only two channels of audio > at 44.1kHz sampling frequency, with typical bit-rates between 66kbps > and 132kbps. The latest version allows for up to 8 channels of audio > at 96kHz sampling frequency. The feasible bit-rate range has also > expanded to from 8kbps to 1400kbps. > > Depending on the version of ATRAC used, the sample-frame size is > either 512, 1024 or 2048. Actual bit-rates are determined by > specifying a fixed encoded frame-size. In other words, instead of > requesting a stereo 44.1kHz stream at, say, 64kbps, one would tell > the encoder to create encoded frame-sizes of 364bytes. > > Thanks, that help somewhat. > > Magnus wrote: "The Frame Offset fields is not sufficiently defined. I > don't understand how you can determine the TS offset for each frame in > the packet using only this field. Also how does it work when there are > more than 2 frames present in the same RTP payload?" > > Here is how the new Frame Offset section reads: > > Frame Offset (FrOff): 4 bits > The purpose of frame offsets is to provide a basic mechanism for the > transmission of redundant data. Using the current packet's timestamp > as a reference, the frame offset is converted to units of the > timestamp. Since frame-size lengths are fixed after being determined > during SDP initiations (one of either 512, 1024, or 2048 samples), > the playback time of the first frame (in relation to the current > timestamp) in the packet can then be calculated. > > As an example of using Frame Offsets, consider a situation when FrOff > is 3. If a packet has 5 frames of audio, with each frame > representing 1024 samples of audio, then we calculate that playback > begins 3 frames (3072 samples) before the current timestamp. (The > only other necessary variable is sampling frequency, which MUST have > been established during SDP negotiations). This field SHOULD NOT be > used in packets containing fragmented data. > > The problem I see is that Frame Offset if used needs to be defined for each frame in the payload. However what I understand it only occurs one in the payload header. Thus I can't understand why one can't use the timestamp to place the data correct. I would also think that some text on how one aggregates multiple frames and derive their timestamps are needed. When sending multiple channels are they in a single block of data or are they sent in multiple blocks of data, each contains a channel or two? If they are split, how does one determine which channel the data belongs to. > > Magnus wrote: "The security section will need more work. I think there > is need to discuss also authentication and integrity protection. Also > congestion control might need some special consideration, due to > redundancy transmission and possibility to vary bit-rate." > > Is a model similar to what exists in the AMR-WB+ draft sufficient? > Yes, I would say so. However there are need to consider if the codec itself contains any security problems, like possibility to create bit-streams that are much more resource demanding than common data. I would also recommend that you looks at RFC 3552. ftp://ftp.rfc-editor.org/in-notes/rfc3552.txt Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 09:07:35 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA26127 for ; Mon, 23 Feb 2004 09:07:35 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvGjk-00034J-4i for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 09:07:08 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1NE785L011794 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 09:07:08 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvGjf-00032Z-5z; Mon, 23 Feb 2004 09:07:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvGDw-00088c-Kf for avt@optimus.ietf.org; Mon, 23 Feb 2004 08:34:16 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id IAA24487 for ; Mon, 23 Feb 2004 08:34:14 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvGDv-0002Ya-00 for avt@ietf.org; Mon, 23 Feb 2004 08:34:15 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvGD7-0002Uv-00 for avt@ietf.org; Mon, 23 Feb 2004 08:33:27 -0500 Received: from [212.68.150.1] (helo=embexcil02.emblaze.ent) by ietf-mx with esmtp (Exim 4.12) id 1AvGCY-0002Nt-00 for avt@ietf.org; Mon, 23 Feb 2004 08:32:50 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C3FA11.9F4ED8B5" Date: Mon, 23 Feb 2004 15:33:29 +0200 Message-ID: Thread-Topic: draft-ietf-avt-rtp-h264-03.doc question Thread-Index: AcP6ClKe38k0Rg3xR1++t6vEydMCHwAAs9RQ From: "Amir Wolf" To: "Magnus Westerlund" Cc: "IETF AVT WG" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.4 required=5.0 tests=AWL,HTML_FONTCOLOR_BLUE, HTML_MESSAGE,HTML_TITLE_EMPTY autolearn=no version=2.60 Subject: [AVT] RE: draft-ietf-avt-rtp-h264-03.doc question Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. ------_=_NextPart_001_01C3FA11.9F4ED8B5 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable comments Inline > -----Original Message----- > From: Magnus Westerlund [ mailto:magnus.westerlund@ericsson.com] > Sent: Monday, February 23, 2004 2:37 PM > To: Amir Wolf > Cc: IETF AVT WG > Subject: Re: draft-ietf-avt-rtp-h264-03.doc question > > > Hi Amir, > > Comments inlie, I would also like to point out that the lastes H.264 > draft is version 04. > > Amir Wolf wrote: > > Hi Magnus, > > I understand, but I think it's wrong. > > As any rtp packet contains the packetization method of the packet, I > > think we should enable an option that supports all packetization > > methods. > > The problem is not deciding how a NALU is packetized. The problem is > that for making the interleaved mode work, all NALUs on the receiver > side must have a DON. We authors has considered if we could > solve it by > some rule on how to determine the DON for NALUs lacking a > DON. However > we could not find a relatively simple rule that would work > satisfactory > without restricting which NALUs that could be sent around it. Thus we > selected to use the explicit and guaranteed to work method of > requiring > all NALUs to be assigned a DON by the sender and having it > transported > in the packet types that support such transport. If you can > write such a > rule, we would welcome it. Actually I can think of a very simple rule: I think that MTAP's can also be used for Non-Interleaved mode - This is = by sending NUL units of several pictures in decoding order It will than require 2 more definitions of MTAP16-A, MTAP24-A, MTAP16-B = and MTAP24-B. Where MTAP's-A will not contain a DON. The packetization-mode flag will than can have some more values with the = distinction of Interleaved and non Interleaved mode, for example: 0- Single Nul unit 1- MTAP16-A and MTAP24-A and STAP-A and FU-A (and Single) 2- MTAP16-B and MTAP24-B and STAP-B and FU-B (and Single) 3- (0-2) =20 The difference between MTAPs-A and STAP-A is very similar to the support = of frame aggregation by rfc3016 which does not require additional = signaling. =20 > > > > In addition, rfc 3016 enables aggregation of frames in one > RTP packet > > for MPEG4, I don't see why not making it possible for AVC without > > special signaling. > > Aggregation is supported in both Non-Interleaved and > Interleaved Mode. > The single NALU mode does not support aggregation due its > intention of > being very simple. Also the single NALU mode is sufficient > for certain > use cases and applications. I understand that there is other > use cases > where aggregation is necessary. However due to the wide area of > applications that the payload format is intended to support, we can't > mandate that all functionality is implemented by all > applications, while > only a few needs certain application sets. The reason for > making Single > NALU mandatory is to ensure that at least on packetization mode is > common for all applications that needs to negotiate. Those are the > reasons why we have the Single NALU mode mandatory, Non-Interleave > Recommended and Interleaved as optional. > > It is up to a certain application to decide what is > appropriate for the > application and in that context determine what modes that should or > should not be implemented. If an application requires interleaving to > work satisfactory, it is up to that application specification to make > interleaving mandatory. > > > > As 3GPP are going to adopt the above draft stating that > Single NUL unit > > mode will be mandatory, Non-Interleaved mode - Recommended and > > Interleaved mode will be optional - We are loosing here one > of the most > > advantages of the AVC. > > If 3GPP in one of its applications needs aggregation, then make > aggregation mandatory to implement. This is up to 3GPP to > determine what > there application requires. In fact I think that the 3GPP SA4 meeting > will be discussing this very issue this week. If you look at the > proposals over which packetization modes that will be required, some > company proposes only single NALU mode, while others proposes > either of > the two others. > > > Cheers > > Magnus Westerlund > > Multimedia Technologies, Ericsson Research EAB/TVA/A > ---------------------------------------------------------------------- > Ericsson AB | Phone +46 8 4048287 > Torshamsgatan 23 | Fax +46 8 7575550 > S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com > > > This communication is confidential and intended solely for > the addressee(s). Any unauthorized review, use, disclosure or > distribution is prohibited. If you believe this message has > been sent to you in error, please notify the sender by > replying to this transmission and delete the message without > disclosing it. Thank you. > > E-mail including attachments is susceptible to data > corruption, interruption, unauthorized amendment, tampering > and viruses, and we only send and receive e-mails on the > basis that we are not liable for any such corruption, > interception, amendment, tampering or viruses or any > consequences thereof. > >=20 ------_=_NextPart_001_01C3FA11.9F4ED8B5 Content-Type: text/html; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable comments = Inline

> -----Original Message-----
> From: Magnus = Westerlund=20 [mailto:magnus.westerlund@e= ricsson.com]
>=20 Sent: Monday, February 23, 2004 2:37 PM
> To: Amir Wolf
> = Cc: IETF=20 AVT WG
> Subject: Re: draft-ietf-avt-rtp-h264-03.doc=20 question
>
>
> Hi Amir,
>
> Comments = inlie, I=20 would also like to point out that the lastes H.264
> draft is = version=20 04.
>
> Amir Wolf wrote:
> > Hi Magnus,
> = > I=20 understand, but I think it's wrong.
> > As any rtp packet = contains the=20 packetization method of the packet, I
> > think we should = enable an=20 option that supports all packetization
> > = methods.
>
> The=20 problem is not deciding how a NALU is packetized. The problem is
> = that=20 for making the interleaved mode work, all NALUs on the receiver
> = side=20 must have a DON. We authors has considered if we could
> solve it=20 by
> some rule on how to determine the DON for NALUs lacking = a
>=20 DON. However
> we could not find a relatively simple rule that = would=20 work
> satisfactory
> without restricting which NALUs that = could be=20 sent around it. Thus we
> selected to use the explicit and = guaranteed to=20 work method of
> requiring
> all NALUs to be assigned a DON = by the=20 sender and having it
> transported
> in the packet types = that=20 support such transport. If you can
> write such a
> rule, we = would=20 welcome it.

Actually I can think of a very simple rule:

I think that MTAP's can also be used for = Non-Interleaved mode -=20 This is by sending NUL units of several pictures in decoding = order

It will than require 2 more definitions of MTAP16-A, = MTAP24-A,=20 MTAP16-B and MTAP24-B.

Where MTAP's-A will not contain a DON.

The packetization-mode flag will than = can have some=20 more values with the distinction of Interleaved and non Interleaved = mode, for=20 example:

0- Single Nul unit

1- MTAP16-A and MTAP24-A and = STAP-A and FU-A=20 (and Single)

2- MTAP16-B and MTAP24-B and = STAP-B=20 and FU-B (and Single)

3-  (0-2)

 

The difference between MTAPs-A and STAP-A is very = similar to the=20 support of frame aggregation by rfc3016 which does not require = additional=20 signaling.

 


>
>
> > In addition, rfc = 3016 enables=20 aggregation of frames in one
> RTP packet
> > for MPEG4, = I don't=20 see why not making it possible for AVC without
> > special=20 signaling.
>
> Aggregation is supported in both = Non-Interleaved=20 and
> Interleaved Mode.
> The single NALU mode does not = support=20 aggregation due its
> intention of
> being very simple. Also = the=20 single NALU mode is sufficient
> for certain
> use cases and = applications. I understand that there is other
> use cases
> = where=20 aggregation is necessary. However due to the wide area of
> = applications=20 that the payload format is intended to support, we can't
> mandate = that=20 all functionality is implemented by all
> applications, = while
> only=20 a few needs certain application sets. The reason for
> making=20 Single
> NALU mandatory is to ensure that at least on = packetization mode=20 is
> common for all applications that needs to negotiate. Those = are=20 the
> reasons why we have the Single NALU mode mandatory,=20 Non-Interleave
> Recommended and Interleaved as = optional.
>
>=20 It is up to a certain application to decide what is
> appropriate = for=20 the
> application and in that context determine what modes that = should=20 or
> should not be implemented. If an application requires = interleaving=20 to
> work satisfactory, it is up to that application specification = to=20 make
> interleaving mandatory.
>
>
> > As = 3GPP are=20 going to adopt the above draft stating that
> Single NUL = unit
> >=20 mode will be mandatory, Non-Interleaved mode - Recommended and
> = >=20 Interleaved mode will be optional - We are loosing here one
> of = the=20 most
> > advantages of the AVC.
>
> If 3GPP in one = of its=20 applications needs aggregation, then make
> aggregation mandatory = to=20 implement. This is up to 3GPP to
> determine what
> there=20 application requires. In fact I think that the 3GPP SA4 meeting
> = will be=20 discussing this very issue this week. If you look at the
> = proposals over=20 which packetization modes that will be required, some
> company = proposes=20 only single NALU mode, while others proposes
> either of
> = the two=20 others.
>
>
> Cheers
>
> Magnus=20 Westerlund
>
> Multimedia Technologies, Ericsson Research=20 EAB/TVA/A
>=20 ---------------------------------------------------------------------->=20 Ericsson=20 AB            = ;   =20 | Phone +46 8 4048287
> Torshamsgatan=20 23           | = Fax  =20 +46 8 7575550
> S-164 80 Stockholm, Sweden | mailto:=20 magnus.westerlund@ericsson.com
>
>
> This = communication is=20 confidential and intended solely for
> the addressee(s). Any = unauthorized=20 review, use, disclosure or
> distribution is prohibited. If you = believe=20 this message has
> been sent to you in error, please notify the = sender=20 by
> replying to this transmission and delete the message = without
>=20 disclosing it. Thank you.
>
> E-mail including attachments = is=20 susceptible to data
> corruption, interruption, unauthorized = amendment,=20 tampering
> and viruses, and we only send and receive e-mails on=20 the
> basis that we are not liable for any such = corruption,
>=20 interception, amendment, tampering or viruses or any
> = consequences=20 thereof.
>
>

------_=_NextPart_001_01C3FA11.9F4ED8B5-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 09:31:57 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA27843 for ; Mon, 23 Feb 2004 09:31:56 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvH7J-00054B-Rv for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 09:31:29 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1NEVTYV019474 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 09:31:29 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvH7G-00053O-LG; Mon, 23 Feb 2004 09:31:26 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvH6Z-0004zc-VD for avt@optimus.ietf.org; Mon, 23 Feb 2004 09:30:43 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA27736 for ; Mon, 23 Feb 2004 09:30:40 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvH6Y-0007gT-00 for avt@ietf.org; Mon, 23 Feb 2004 09:30:42 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvH5G-0007ZD-00 for avt@ietf.org; Mon, 23 Feb 2004 09:29:22 -0500 Received: from eagle.ericsson.se ([193.180.251.53]) by ietf-mx with esmtp (Exim 4.12) id 1AvH4v-0007V1-00 for avt@ietf.org; Mon, 23 Feb 2004 09:29:01 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by eagle.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1NET0Ah030954 for ; Mon, 23 Feb 2004 15:29:00 +0100 Received: from esealnt610.al.sw.ericsson.se ([153.88.254.120]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Mon, 23 Feb 2004 15:29:00 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt610.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FMFLQ2CQ; Mon, 23 Feb 2004 15:29:07 +0100 Message-ID: <403A0D90.3@ericsson.com> Date: Mon, 23 Feb 2004 15:26:24 +0100 X-Sybari-Trust: 9c9205d2 c77f3eb6 53bd8675 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Amir Wolf CC: IETF AVT WG References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 23 Feb 2004 14:29:00.0061 (UTC) FILETIME=[60BCACD0:01C3FA19] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Re: draft-ietf-avt-rtp-h264-03.doc question Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi Amir, Sorry, for misunderstanding. I thought the problem was the overhead associated with using STAP-B, instead of using STAP-As. However as I understand your problem is that you like to use MTAPs also in Non-Interleaved mode. We have discussed this setup among the authors. The reason why it is not included as I can find it is captured in this explanation by Miska: "Regarding MTAPs with DON: The only scenario where MTAPs without DON can be used is when several pictures (access units) are encapsulated in their decoding order to an MTAP to drop the packet header overhead compared to STAP-based encapsulation. This requires either a very low bitrate or large MTU size, neither of which is very likely. All the use cases presented in the specification require the use of DON with MTAPs. Thus, I suggest allowing MTAPs only with DON." What is your opinion about this? Cheers Magnus -- Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 09:39:34 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA28129 for ; Mon, 23 Feb 2004 09:39:34 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvHEg-00066b-Do for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 09:39:06 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1NEd5as023371 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 09:39:05 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvHEb-00064l-KW; Mon, 23 Feb 2004 09:39:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvHDq-00060B-TB for avt@optimus.ietf.org; Mon, 23 Feb 2004 09:38:14 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA28071 for ; Mon, 23 Feb 2004 09:38:11 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvHDo-0000ZB-00 for avt@ietf.org; Mon, 23 Feb 2004 09:38:12 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvHCu-0000V7-00 for avt@ietf.org; Mon, 23 Feb 2004 09:37:16 -0500 Received: from [212.68.150.1] (helo=embexcil02.emblaze.ent) by ietf-mx with esmtp (Exim 4.12) id 1AvHC1-0000NU-00 for avt@ietf.org; Mon, 23 Feb 2004 09:36:21 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable Date: Mon, 23 Feb 2004 16:36:55 +0200 Message-ID: Thread-Topic: draft-ietf-avt-rtp-h264-03.doc question Thread-Index: AcP6GYyMXnPSd2acR9Ci7UuwTQUyzwAAIWuA From: "Amir Wolf" To: "Magnus Westerlund" Cc: "IETF AVT WG" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Subject: [AVT] RE: draft-ietf-avt-rtp-h264-03.doc question Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Well,=20 Streaming AVC over GPRS networks requires a very low bitrate (about = 30-40Kbps). In order to get the maximum out of the network it is essential to = aggregate pictures as the MTU still stands around the 1500 bytes. Amir > -----Original Message----- > From: Magnus Westerlund [mailto:magnus.westerlund@ericsson.com] > Sent: Monday, February 23, 2004 4:26 PM > To: Amir Wolf > Cc: IETF AVT WG > Subject: Re: draft-ietf-avt-rtp-h264-03.doc question >=20 >=20 > Hi Amir, >=20 > Sorry, for misunderstanding. I thought the problem was the overhead=20 > associated with using STAP-B, instead of using STAP-As. However as I=20 > understand your problem is that you like to use MTAPs also in=20 > Non-Interleaved mode. >=20 > We have discussed this setup among the authors. The reason=20 > why it is not=20 > included as I can find it is captured in this explanation by Miska: >=20 > "Regarding MTAPs with DON: The only scenario where MTAPs=20 > without DON can=20 > be used is when several pictures (access units) are encapsulated in=20 > their decoding order to an MTAP to drop the packet header overhead=20 > compared to STAP-based encapsulation. This requires either a very low=20 > bitrate or large MTU size, neither of which is very likely.=20 > All the use=20 > cases presented in the specification require the use of DON=20 > with MTAPs.=20 > Thus, I suggest allowing MTAPs only with DON." >=20 > What is your opinion about this? >=20 > Cheers >=20 > Magnus >=20 > --=20 >=20 > Magnus Westerlund >=20 > Multimedia Technologies, Ericsson Research EAB/TVA/A > ---------------------------------------------------------------------- > Ericsson AB | Phone +46 8 4048287 > Torshamsgatan 23 | Fax +46 8 7575550 > S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com >=20 >=20 > This communication is confidential and intended solely for=20 > the addressee(s). Any unauthorized review, use, disclosure or=20 > distribution is prohibited. If you believe this message has=20 > been sent to you in error, please notify the sender by=20 > replying to this transmission and delete the message without=20 > disclosing it. Thank you. >=20 > E-mail including attachments is susceptible to data=20 > corruption, interruption, unauthorized amendment, tampering=20 > and viruses, and we only send and receive e-mails on the=20 > basis that we are not liable for any such corruption,=20 > interception, amendment, tampering or viruses or any=20 > consequences thereof. >=20 >=20 _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 11:49:37 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA05497 for ; Mon, 23 Feb 2004 11:49:37 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvJGV-0005Q1-5F for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 11:49:10 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1NGn7kf020825 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 11:49:07 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvJGO-0005JU-8I; Mon, 23 Feb 2004 11:49:00 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvJFo-0005Bc-O4 for avt@optimus.ietf.org; Mon, 23 Feb 2004 11:48:25 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA05485 for ; Mon, 23 Feb 2004 11:48:21 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvJFn-0003t4-00 for avt@ietf.org; Mon, 23 Feb 2004 11:48:23 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvJF3-0003pE-00 for avt@ietf.org; Mon, 23 Feb 2004 11:47:38 -0500 Received: from albatross-ext.wise.edt.ericsson.se ([193.180.251.49]) by ietf-mx with esmtp (Exim 4.12) id 1AvJEO-0003kD-00 for avt@ietf.org; Mon, 23 Feb 2004 11:46:56 -0500 Received: from esealmw141.al.sw.ericsson.se ([153.88.254.120]) by albatross-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1NGktqY020513 for ; Mon, 23 Feb 2004 17:46:55 +0100 (MET) Received: from esealnt613.al.sw.ericsson.se ([153.88.254.125]) by esealmw141.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Mon, 23 Feb 2004 17:46:55 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt613.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FM6XQCTG; Mon, 23 Feb 2004 17:46:55 +0100 Message-ID: <403A2DE3.3030506@ericsson.com> Date: Mon, 23 Feb 2004 17:44:19 +0100 X-Sybari-Trust: e1eb1694 c77f3eb6 53bd8675 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Joerg Ott , julian.chesterfield@cl.cam.ac.uk, eve_schooler@acm.org CC: IETF AVT WG Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 23 Feb 2004 16:46:55.0400 (UTC) FILETIME=[A5393280:01C3FA2C] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Comments on draft-ietf-avt-rtcpssm-06.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, Here is my comments on the draft. They are mostly editorial, there are a few that are for discussion. see 8, 9, 13, 15, 17, 19, 20 1. You will need the new boilerplate according to RFC 3667 and RFC 3668. 2. The copyright misses any date. 3. The pages are missing the correct new-page charachters. 4. TOC: Chapter 17 is missing a space between title and number. 5. Chapter 5: Table with RTCP packet types. I think that XR is better called "Extended Reports" instead of "RTCP Extension". 6. You are missing two RTCP packet type in this table. FIR full INTRA-frame request 192 [RFC2032] NACK negative acknowledgement 193 [RFC2032] 7. Section 6.2, second paragraph: "MUST not" should be "MUST NOT" 8. Section 6.2, third paragraph: "All unicast data received on this port MUST be forwarded by the source to the group on the multicast RTCP channel." Is it really intended that any received packets should be forwarded? If someone sends IP/UDP/FOO then it will be forwarded. Isn't this a problem. I think that RTCP has pretty good heuristics for checking that RTCP really is RTCP. 9. Section 7.1.3: The distribution buckets: Is it really intended that the buckets shall overlap? IF both ends of any given bucket is inclusive then any consecutive bucket will share one integer value of the bucket range. Also how does one resolve cases when the number of possible values are not even dividable between the buckets? I think that consistent rules for rounding is necessary. 10. Section 7.1.5: The second last sentence uses lower case "must" where I think it should be a "MUST". 11. Section 7.1.8: The length field. The definition is a bit confusing "For a DNS name, the length field indicates the number of 32-bit words making up the string plus 1 byte and any additional padding required to reach the next word boundary." I would write it: For a DNS name, the length field indicates the number of 32-bit words necessary for the string, and 1 octet of NULL termination. The address string is padded if not 32 bit aligned, see below. 12. Section 7.1.8: Address: If I understand it correctly, at least one character of NULL termination is required. Please write this out. 13. Section 7.1.9: Collision SSRC: "Each Collision SSRC is included repeatedly in Collision sub-report blocks and sent at least five times." Didn't we in Minneapolis discuss this and come to the conclusion that we did not need to repeat it five times. Instead one reports it as long as the collision exist. 14. Section 7.1.9., collision SSRC, strange formatting on the last line of the paragraph. 15. Section 7.1.11: RTCP bandwidth: "This is a fraction value indicating a percentage of the session bandwidth, expressed as a fixed-point number with the binary point at the left edge of the field." I think that session bandwidth is a bit unclear here, do you refer to the RTP session bandwidth or the total RTCP bandwidth? 16. Section 7.1.11: I think you should take a little more care to avoid splitting figures by page breaks. 17. Section 7.1.12: When is this expected to be used. When will any receiver in the RTP session not receive the SR of a sender? I think that any SR will need to be forwarded to the receivers for synchronization reasons. Thus I do not understand why explicit notification of the number of senders are needed. 18. Section 7.2, third paragraph: "If both are included, the Receiver RTCP Bandwidth sub-report block MUST take precedence." Isn't SHALL a better word in this context? 19. Section 7.2, seventh paragraph: May a sender of sub-report block perform differentiated reporting using multiple report blocks, for example report your appendix example in this way. sub-report 1 min 0 max 8 NDB=3 sub-report 2 min 9 max 19 NDB 11 sub-report 3 min 20 max 39 NDB 5 I think a sentence making this explicitly allowed or disallowed would be good. 20. Section 10.1: The SDP attribute is missing formal declaration, and registration. Is is allowed to be extended? 21. Section 11.7.1, bullet B. RTSP could also use S/MIME. Currently neither S/MIME nor TSL or SSL is defined for RTSP. 22. In the reference section all references from 10 and onwards are missing space between numbering and author. 23. Section 16.4. What is really X? When I read it I interpreted "X values indicate loss percentage reported," as meaning that X was expressed in X/100 packet losses, instead of the X/256 that it really is. Maybe not using "percentage" could make this clear. 24. IPR and Copyright Notice needs to use the new boiler plate from RFC 3667 & 3668. Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Mon Feb 23 12:59:33 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA08804 for ; Mon, 23 Feb 2004 12:59:33 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvKMF-00039q-2o for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 12:59:07 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1NHx7G3012115 for avt-archive@odin.ietf.org; Mon, 23 Feb 2004 12:59:07 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvKMA-00038q-03; Mon, 23 Feb 2004 12:59:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvKLX-00037S-5x for avt@optimus.ietf.org; Mon, 23 Feb 2004 12:58:23 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA08775 for ; Mon, 23 Feb 2004 12:58:18 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvKLV-0002PV-00 for avt@ietf.org; Mon, 23 Feb 2004 12:58:21 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvKKc-0002M2-00 for avt@ietf.org; Mon, 23 Feb 2004 12:57:27 -0500 Received: from mout01.kundenservices.net ([81.169.148.86] helo=mout00.kundenservices.net) by ietf-mx with esmtp (Exim 4.12) id 1AvKJc-0002FK-00 for avt@ietf.org; Mon, 23 Feb 2004 12:56:24 -0500 Received: from smtp01.kundenservices.net ([81.169.148.77]) by mout00.kundenservices.net with esmtp (Exim 4.24) id 1AvKJQ-0008Oz-A6; Mon, 23 Feb 2004 18:56:12 +0100 Received: from stewe.org ([81.169.171.175] helo=hobel.stewe.org) by smtp01.kundenservices.net with asmtp (Exim 3.22 #4) id 1AvKJP-0002xe-00; Mon, 23 Feb 2004 18:56:12 +0100 Message-Id: <6.0.3.0.2.20040223090540.02b9d760@pop.serverkompetenz.de> X-Sender: p1377673+2@pop.serverkompetenz.de X-Mailer: QUALCOMM Windows Eudora Version 6.0.3.0 Date: Mon, 23 Feb 2004 09:55:49 -0800 To: "Amir Wolf" From: Stephan Wenger Subject: Re: [AVT] RE: draft-ietf-avt-rtp-h264-03.doc question Cc: "Magnus Westerlund" , "IETF AVT WG" In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Hi Amir, and AVTers, There is a procedural and a technical aspect in this thread, and I want to address both. First, the technical side: H.264 carries no timing information in-band. In particular, it does not carry information about skipped pictures, the way older video standards did this using the TR (there are a number of very good reasons for this design decision, but discussing them here would take a little bit too far). That is, if we were aggregating pictures in a form of an STAP (or the way RFC3016 is doing it) we would not know when to display them. Hence we will need a modified version of MTAPs for any form of aggregation. The overhead of an MTAP16 aggregation unit is 5 bytes, and could possibly reduced to 4 bytes if we were adding an MTAP16 without DON. Either number sounds awfully close to the size of compressed headers on the 3GPP access link. In the core network -- who cares? Also, my gut feeling is that the header compression of the MTAP packet itself would likely be less efficient than the one of the single NALU packets as their content is less predictable, which could render aggregation even more questionable. Now the procedural side: Please let me summarize my understanding of this thread: a) Amir suggests there is a valid application for multiple pictures in an MTAP without DON (IMHO questionable, see above) b) that application, if valid, could be equally well served with MTAPs with DON, with minimal additional overhead, d) There is an ongoing discussion in 3GPP on many aspects of the use of H.264, including the use of MTAPs with DON Out of this I see two solutions: 1. 3GPP mandates or recommends the use MTAPs with DON for low bitrate applications, but possibly restricts the functionality of this powerful tool to whatever they deem useful. Understand, any form of restriction is not my personal recommendation -- one would indeed loose a lot of carefully worked out functionality when doing so -- but if a group is feeling that a certain tool is too complex in terms of hard-, soft-, or brainware, then let them do it. I believe Miska is at the meeting Magnus has mentioned, hence assistance can be provided to put such restrictions in appropriate language. 2. We add syntax to support exactly what Amir wants (new MTAP types), so to act pro-actively on the ongoing discussions in 3GPP. the authors, among themselves, have already had this discussion and found it very tricky. Needless to say, I would opt for the first option. Stephan > > -----Original Message----- > > From: Magnus Westerlund [mailto:magnus.westerlund@ericsson.com] > > Sent: Monday, February 23, 2004 4:26 PM > > To: Amir Wolf > > Cc: IETF AVT WG > > Subject: Re: draft-ietf-avt-rtp-h264-03.doc question > > > > > > Hi Amir, > > > > Sorry, for misunderstanding. I thought the problem was the overhead > > associated with using STAP-B, instead of using STAP-As. However as I > > understand your problem is that you like to use MTAPs also in > > Non-Interleaved mode. > > > > We have discussed this setup among the authors. The reason > > why it is not > > included as I can find it is captured in this explanation by Miska: > > > > "Regarding MTAPs with DON: The only scenario where MTAPs > > without DON can > > be used is when several pictures (access units) are encapsulated in > > their decoding order to an MTAP to drop the packet header overhead > > compared to STAP-based encapsulation. This requires either a very low > > bitrate or large MTU size, neither of which is very likely. > > All the use > > cases presented in the specification require the use of DON > > with MTAPs. > > Thus, I suggest allowing MTAPs only with DON." > > > > What is your opinion about this? > > > > Cheers > > > > Magnus > > > > -- > > > > Magnus Westerlund > > > > Multimedia Technologies, Ericsson Research EAB/TVA/A > > ---------------------------------------------------------------------- > > Ericsson AB | Phone +46 8 4048287 > > Torshamsgatan 23 | Fax +46 8 7575550 > > S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com > > > > > > This communication is confidential and intended solely for > > the addressee(s). Any unauthorized review, use, disclosure or > > distribution is prohibited. If you believe this message has > > been sent to you in error, please notify the sender by > > replying to this transmission and delete the message without > > disclosing it. Thank you. > > > > E-mail including attachments is susceptible to data > > corruption, interruption, unauthorized amendment, tampering > > and viruses, and we only send and receive e-mails on the > > basis that we are not liable for any such corruption, > > interception, amendment, tampering or viruses or any > > consequences thereof. > > > > > >_______________________________________________ >Audio/Video Transport Working Group >avt@ietf.org >https://www1.ietf.org/mailman/listinfo/avt _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 24 05:05:50 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA10532 for ; Tue, 24 Feb 2004 05:05:49 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvZRI-0008LY-Eo for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 05:05:21 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1OA5KYL032080 for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 05:05:20 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvZR4-0008Id-18; Tue, 24 Feb 2004 05:05:06 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvZQq-0008Go-Vi for avt@optimus.ietf.org; Tue, 24 Feb 2004 05:04:55 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA10489 for ; Tue, 24 Feb 2004 05:04:50 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvZQn-0001yq-00 for avt@ietf.org; Tue, 24 Feb 2004 05:04:49 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvZPq-0001tJ-00 for avt@ietf.org; Tue, 24 Feb 2004 05:03:51 -0500 Received: from [212.68.150.1] (helo=embexcil02.emblaze.ent) by ietf-mx with esmtp (Exim 4.12) id 1AvZOy-0001lB-00 for avt@ietf.org; Tue, 24 Feb 2004 05:02:57 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable Subject: RE: [AVT] RE: draft-ietf-avt-rtp-h264-03.doc question Date: Tue, 24 Feb 2004 12:03:34 +0200 Message-ID: Thread-Topic: [AVT] RE: draft-ietf-avt-rtp-h264-03.doc question Thread-Index: AcP6Nn83UVZ9rFwATt6i9YoJCwJ7MAAhiaSA From: "Amir Wolf" To: "Stephan Wenger" Cc: "Magnus Westerlund" , "IETF AVT WG" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Hi Stephan, I am not suggesting any limitations, on the contrary, To my opinion the current specification is somehow limiting implementers = of Non-Interleaved mode not to use MTAPs. As the packetization-mode parameter in the SDP, having the value of 1 = forbids using MTAPs which might be very useful also for Non-Interleaved = mode. > -----Original Message----- > From: Stephan Wenger [mailto:stewe@stewe.org] > Sent: Monday, February 23, 2004 7:56 PM > To: Amir Wolf > Cc: Magnus Westerlund; IETF AVT WG > Subject: Re: [AVT] RE: draft-ietf-avt-rtp-h264-03.doc question >=20 >=20 > Hi Amir, and AVTers, >=20 > There is a procedural and a technical aspect in this thread,=20 > and I want to=20 > address both. First, the technical side: >=20 > H.264 carries no timing information in-band. In particular,=20 > it does not=20 > carry information about skipped pictures, the way older video=20 > standards did=20 > this using the TR (there are a number of very good reasons=20 > for this design=20 > decision, but discussing them here would take a little bit=20 > too far). That=20 > is, if we were aggregating pictures in a form of an STAP (or the way=20 > RFC3016 is doing it) we would not know when to display them. =20 > Hence we will=20 > need a modified version of MTAPs for any form of aggregation. >=20 > The overhead of an MTAP16 aggregation unit is 5 bytes, and=20 > could possibly=20 > reduced to 4 bytes if we were adding an MTAP16 without DON. =20 > Either number=20 > sounds awfully close to the size of compressed headers on the=20 > 3GPP access=20 > link. In the core network -- who cares? Also, my gut=20 > feeling is that the=20 > header compression of the MTAP packet itself would likely be=20 > less efficient=20 > than the one of the single NALU packets as their content is less=20 > predictable, which could render aggregation even more questionable. >=20 > Now the procedural side: >=20 > Please let me summarize my understanding of this thread: > a) Amir suggests there is a valid application for multiple=20 > pictures in an=20 > MTAP without DON (IMHO questionable, see above) > b) that application, if valid, could be equally well served=20 > with MTAPs with=20 > DON, with minimal additional overhead, > d) There is an ongoing discussion in 3GPP on many aspects of=20 > the use of=20 > H.264, including the use of MTAPs with DON >=20 > Out of this I see two solutions: >=20 > 1. 3GPP mandates or recommends the use MTAPs with DON for low bitrate=20 > applications, but possibly restricts the functionality of=20 > this powerful=20 > tool to whatever they deem useful. Understand, any form of=20 > restriction is=20 > not my personal recommendation -- one would indeed loose a=20 > lot of carefully=20 > worked out functionality when doing so -- but if a group is=20 > feeling that a=20 > certain tool is too complex in terms of hard-, soft-, or=20 > brainware, then=20 > let them do it. I believe Miska is at the meeting Magnus has=20 > mentioned,=20 > hence assistance can be provided to put such restrictions in=20 > appropriate=20 > language. > 2. We add syntax to support exactly what Amir wants (new MTAP=20 > types), so to=20 > act pro-actively on the ongoing discussions in 3GPP. the=20 > authors, among=20 > themselves, have already had this discussion and found it very tricky. >=20 > Needless to say, I would opt for the first option. >=20 > Stephan >=20 > > > -----Original Message----- > > > From: Magnus Westerlund [mailto:magnus.westerlund@ericsson.com] > > > Sent: Monday, February 23, 2004 4:26 PM > > > To: Amir Wolf > > > Cc: IETF AVT WG > > > Subject: Re: draft-ietf-avt-rtp-h264-03.doc question > > > > > > > > > Hi Amir, > > > > > > Sorry, for misunderstanding. I thought the problem was=20 > the overhead > > > associated with using STAP-B, instead of using STAP-As.=20 > However as I > > > understand your problem is that you like to use MTAPs also in > > > Non-Interleaved mode. > > > > > > We have discussed this setup among the authors. The reason > > > why it is not > > > included as I can find it is captured in this explanation=20 > by Miska: > > > > > > "Regarding MTAPs with DON: The only scenario where MTAPs > > > without DON can > > > be used is when several pictures (access units) are=20 > encapsulated in > > > their decoding order to an MTAP to drop the packet header overhead > > > compared to STAP-based encapsulation. This requires=20 > either a very low > > > bitrate or large MTU size, neither of which is very likely. > > > All the use > > > cases presented in the specification require the use of DON > > > with MTAPs. > > > Thus, I suggest allowing MTAPs only with DON." > > > > > > What is your opinion about this? > > > > > > Cheers > > > > > > Magnus > > > > > > -- > > > > > > Magnus Westerlund > > > > > > Multimedia Technologies, Ericsson Research EAB/TVA/A > > >=20 > ---------------------------------------------------------------------- > > > Ericsson AB | Phone +46 8 4048287 > > > Torshamsgatan 23 | Fax +46 8 7575550 > > > S-164 80 Stockholm, Sweden | mailto:=20 > magnus.westerlund@ericsson.com > > > > > > > > > This communication is confidential and intended solely for > > > the addressee(s). Any unauthorized review, use, disclosure or > > > distribution is prohibited. If you believe this message has > > > been sent to you in error, please notify the sender by > > > replying to this transmission and delete the message without > > > disclosing it. Thank you. > > > > > > E-mail including attachments is susceptible to data > > > corruption, interruption, unauthorized amendment, tampering > > > and viruses, and we only send and receive e-mails on the > > > basis that we are not liable for any such corruption, > > > interception, amendment, tampering or viruses or any > > > consequences thereof. > > > > > > > > > >_______________________________________________ > >Audio/Video Transport Working Group > >avt@ietf.org > >https://www1.ietf.org/mailman/listinfo/avt >=20 >=20 _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 24 05:15:36 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA10921 for ; Tue, 24 Feb 2004 05:15:36 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvZam-0000wQ-2i for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 05:15:08 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1OAF7uG003611 for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 05:15:07 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvZaf-0000vf-T9; Tue, 24 Feb 2004 05:15:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvZZl-0000tv-Vj for avt@optimus.ietf.org; Tue, 24 Feb 2004 05:14:06 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA10831 for ; Tue, 24 Feb 2004 05:14:03 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvZZi-0002jp-00 for avt@ietf.org; Tue, 24 Feb 2004 05:14:02 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvZYo-0002ei-00 for avt@ietf.org; Tue, 24 Feb 2004 05:13:07 -0500 Received: from ns5.sony.co.jp ([137.153.0.45]) by ietf-mx with esmtp (Exim 4.12) id 1AvZY4-0002ZP-00 for avt@ietf.org; Tue, 24 Feb 2004 05:12:20 -0500 Received: from mail21.sony.co.jp (mail21.sony.co.jp [43.0.1.221]) Received: from mail21.sony.co.jp (localhost [127.0.0.1]) by mail21.sony.co.jp (R8/Sony) with ESMTP id i1OACIAk019675 for ; Tue, 24 Feb 2004 19:12:18 +0900 (JST) Received: from jptkyxim02.jp.sony.com (jptkyxim02.jp.sony.com [43.15.17.88]) by mail21.sony.co.jp (R8/Sony) with ESMTP id i1OACHcn019668 for ; Tue, 24 Feb 2004 19:12:18 +0900 (JST) Received: from jptkyxwa02.jp.sony.com ([43.15.31.2]) by jptkyxim02.jp.sony.com with Microsoft SMTPSVC(5.0.2195.5329); Tue, 24 Feb 2004 19:12:17 +0900 Received: from [43.13.117.153] ([43.13.117.153]) by jptkyxwa02.jp.sony.com with Microsoft SMTPSVC(5.0.2195.5329); Tue, 24 Feb 2004 19:12:17 +0900 In-Reply-To: <4039FC3E.2080109@ericsson.com> References: <1CDE927C-61CA-11D8-A1E4-000393CC2B7A@jp.sony.com> <4039FC3E.2080109@ericsson.com> Mime-Version: 1.0 (Apple Message framework v612) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit Cc: avt@ietf.org, Mitsuyuki Hatanaka , Jun Matsumoto From: Matthew Romaine Subject: [AVT] Re: ATRAC Family Payload update Date: Tue, 24 Feb 2004 19:12:16 +0900 To: Magnus Westerlund X-Mailer: Apple Mail (2.612) X-OriginalArrivalTime: 24 Feb 2004 10:12:17.0375 (UTC) FILETIME=[AE6F0EF0:01C3FABE] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Magnus, Thanks for your help. Responses inlined: > Also does a specific channel assignment rule for the number exist? Are > you using the one in RFC 3551 with extension for 7 and 8 channels? The channel assignments charted in RFC 3551 don't really work for us, since for one thing an LFE channel is not specified. So I'll add a similar chart for channel assignments in the draft. Thanks for pointing this out. > Also I think you should consider how you intend to use the frame > sample size and the frame length parameters. In what directions does > they in fact apply between a sender and receiver? This information is needed to initialize the decoder on the receiving side; rather than send it every packet, we thought making it a MIME parameter would allow for its use during SDP negotiations. Is there something more we need to consider? > How common is it expected to change the number of channels in a RTP > stream, i.e. for the same SSRC? If it possible to change at all, have > you considered the problems, see my mail about this. > http://www1.ietf.org/mail-archive/working-groups/avt/current/ > msg03384.html Our current thinking is to use translators and perhaps mixers to handle changes in the number of channels. Our initial payload proposals which we have since dropped did try to allow for channel changes mid-stream, but we have decided to forgo that feature. Basically, we were trying to project a payload format that assumed a scalable codec onto a non-scalable one (in the strictest sense, anyways). So at the moment we do not plan on having the number of channels change w/o a re-negotiation via SDP. > The problem I see is that Frame Offset if used needs to be defined for > each frame in the payload. However what I understand it only occurs > one in the payload header. Thus I can't understand why one can't use > the timestamp to place the data correct. Just to be clear, multiple audio frames in a packet (with a maximum of 16) must be stored sequentially. So I'm not quite sure why you think each frame needs the FrOff field....hm... Since our timestamp will be sample based, our initial thinking was to have sequential packets increase their timestamp by the number of samples sent in the previous packet. We were thinking the timestamp should basically not be manipulated beyond increasing it as necessary for each succeeding packet (shouldn't there be at least one field that is atomically increasing?) Thus, when sending redundant frames, we have a field to indicate how many 'previous frames' are being sent instead of changing the timestamp. Since a packet can only hold up to 16 audio frames (where a single frame can hold up to 1 to 8 channels of encoded audio -- see next response), there is a maximum difference possible between the "current timestamp" and the largest allowable "rewind". By doing this, we ensure the stream will progress; if we allow manipulations of the timestamp, who knows what some crazy implementor may do :) Also keep in mind that we are allowing previous frames to be followed by new frames, all in the same packet. Maybe this ASCII visualization will help: |---Fr1--|--Fr2--|--Fr3--|--Fr4--|--Fr5--| Nth Packet |--Fr3--|--Fr4--|--Fr5--|--Fr6--|--Fr7--| N+1th Packet In this case, the "N+1th" packet would have it's FrOff field = 3, since the timestamp in packet "N+1" would indicate where Fr6 should start. I suppose there are a few ways to do the same thing.... is there something we are missing with this approach? > When sending multiple channels are they in a single block of data or > are they sent in multiple blocks of data, each contains a channel or > two? If they are split, how does one determine which channel the data > belongs to. multiple channels in any variety are sent as single blocks of data; there is no interleaving of encoded audio frames, so there is no need to worry about which "block of data" is "which channel". This will probably be a point of confusion for anyone who keeps our previous (now dropped) payload format in mind. We have completely scrapped that implementation. Our main goal at this point is to keep things very simple while still allowing streaming of multichannel data. I will clarify this in the draft (as well as how timestamps are determined, etc.) btw, when would you like to schedule our meeting outside the avt session? Oh, and by when should we get you our presentation material? Thanks again, Matt ---------------------------------------- Matthew M.I. Romaine IMNC Audio Codec Group Sony Corporation phone: 03-5448-6065 fax: 03-5448-5617 ---------------------------------------- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 24 11:01:37 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA27518 for ; Tue, 24 Feb 2004 11:01:37 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Avezf-0001ED-0a for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 11:01:11 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1OG1Ai9004720 for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 11:01:10 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvezW-0001Ck-Bo; Tue, 24 Feb 2004 11:01:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aveyl-00019b-0c for avt@optimus.ietf.org; Tue, 24 Feb 2004 11:00:15 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA27426 for ; Tue, 24 Feb 2004 11:00:11 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aveyh-00048m-00 for avt@ietf.org; Tue, 24 Feb 2004 11:00:12 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Avexr-00043a-00 for avt@ietf.org; Tue, 24 Feb 2004 10:59:19 -0500 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47]) by ietf-mx with esmtp (Exim 4.12) id 1AvexO-0003xW-00 for avt@ietf.org; Tue, 24 Feb 2004 10:58:51 -0500 Received: from esealmw143.al.sw.ericsson.se ([153.88.254.118]) by penguin-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1OFwoYG023222 for ; Tue, 24 Feb 2004 16:58:50 +0100 (MET) Received: from esealnt611.al.sw.ericsson.se ([153.88.254.121]) by esealmw143.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 24 Feb 2004 16:58:50 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt611.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FSLBYN1W; Tue, 24 Feb 2004 16:58:58 +0100 Message-ID: <403B741B.5060906@ericsson.com> Date: Tue, 24 Feb 2004 16:56:11 +0100 X-Sybari-Trust: 0658d46a c77f3eb6 6ea67f5e 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: IETF AVT WG CC: Colin Perkins Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 24 Feb 2004 15:58:50.0027 (UTC) FILETIME=[17D1F7B0:01C3FAEF] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Presentation deadline for WG meeting Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, Anyone doing a presentation at the AVT WG is required to send their presentation to both chairs at the latest 19.00 pm korean time on Sunday the 29th. A summary of the issues to be discussed shall also be sent to the WG mailing list by then. Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 24 11:28:38 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA28081 for ; Tue, 24 Feb 2004 11:28:38 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvfPl-0002rD-Rq for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 11:28:09 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1OGS9xi010942 for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 11:28:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvfPh-0002oS-6j; Tue, 24 Feb 2004 11:28:05 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvfPK-0002kM-3w for avt@optimus.ietf.org; Tue, 24 Feb 2004 11:27:42 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA27977 for ; Tue, 24 Feb 2004 11:27:39 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvfPJ-0006bv-00 for avt@ietf.org; Tue, 24 Feb 2004 11:27:41 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvfF0-0005Z4-00 for avt@ietf.org; Tue, 24 Feb 2004 11:17:02 -0500 Received: from albatross-ext.wise.edt.ericsson.se ([193.180.251.49]) by ietf-mx with esmtp (Exim 4.12) id 1AvfE8-0005UY-00 for avt@ietf.org; Tue, 24 Feb 2004 11:16:08 -0500 Received: from esealmw141.al.sw.ericsson.se ([153.88.254.120]) by albatross-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1OGG7qY020978 for ; Tue, 24 Feb 2004 17:16:07 +0100 (MET) Received: from esealnt610.al.sw.ericsson.se ([153.88.254.120]) by esealmw141.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 24 Feb 2004 17:16:07 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt610.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FSKYGJKP; Tue, 24 Feb 2004 17:16:19 +0100 Message-ID: <403B7829.6020002@ericsson.com> Date: Tue, 24 Feb 2004 17:13:29 +0100 X-Sybari-Trust: 94f64313 c77f3eb6 6ea67f5e 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: IETF AVT WG CC: Colin Perkins Subject: Re: [AVT] Presentation deadline for WG meeting References: <403B741B.5060906@ericsson.com> In-Reply-To: <403B741B.5060906@ericsson.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 24 Feb 2004 16:16:07.0844 (UTC) FILETIME=[82684640:01C3FAF1] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, I would like to add that presentations is acceptable in PDF or powerpoint. Please avoid using anything other than normal fonts, especially company specific fonts. We have had problems earlier with showing them. /Magnus Magnus Westerlund (KI/EAB) wrote: > Hi, > > Anyone doing a presentation at the AVT WG is required to send their > presentation to both chairs at the latest 19.00 pm korean time on Sunday > > the 29th. A summary of the issues to be discussed shall also be sent to > the WG mailing list by then. > > Cheers > > Magnus Westerlund > > Multimedia Technologies, Ericsson Research EAB/TVA/A > ---------------------------------------------------------------------- > Ericsson AB | Phone +46 8 4048287 > Torshamsgatan 23 | Fax +46 8 7575550 > S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com > > > > This communication is confidential and intended solely for the > addressee(s). Any unauthorized review, use, disclosure or distribution > is prohibited. If you believe this message has been sent to you in > error, please notify the sender by replying to this transmission and > delete the message without disclosing it. Thank you. > > E-mail including attachments is susceptible to data corruption, > interruption, unauthorized amendment, tampering and viruses, and we only > send and receive e-mails on the basis that we are not liable for any > such corruption, interception, amendment, tampering or viruses or any > consequences thereof. > > > _______________________________________________ > Audio/Video Transport Working Group > avt@ietf.org > https://www1.ietf.org/mailman/listinfo/avt > -- Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 24 14:47:36 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id OAA06354 for ; Tue, 24 Feb 2004 14:47:36 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AviWK-0002zk-LX for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 14:47:08 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1OJl8WF011505 for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 14:47:08 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AviWD-0002wT-To; Tue, 24 Feb 2004 14:47:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AviVW-0002tJ-M4 for avt@optimus.ietf.org; Tue, 24 Feb 2004 14:46:18 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id OAA06161 for ; Tue, 24 Feb 2004 14:46:15 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AviVT-0002UD-00 for avt@ietf.org; Tue, 24 Feb 2004 14:46:15 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AviUb-0002L2-00 for avt@ietf.org; Tue, 24 Feb 2004 14:45:22 -0500 Received: from relay2.eecs.berkeley.edu ([169.229.60.28]) by ietf-mx with esmtp (Exim 4.12) id 1AviTL-00023L-00 for avt@ietf.org; Tue, 24 Feb 2004 14:44:04 -0500 Received: from relay3.EECS.Berkeley.EDU (localhost [127.0.0.1]) by relay2.EECS.Berkeley.EDU (8.12.10/8.9.3) with ESMTP id i1OJi2kE011259 for ; Tue, 24 Feb 2004 11:44:03 -0800 (PST) Received: from gateway.EECS.Berkeley.EDU (nsmail@gateway.EECS.Berkeley.EDU [169.229.60.73]) by relay3.EECS.Berkeley.EDU (8.12.10/8.9.3) with ESMTP id i1OJi2FU015033 for ; Tue, 24 Feb 2004 11:44:02 -0800 (PST) Received: from [128.32.34.73] (dhcp-34-73.CS.Berkeley.EDU [128.32.34.73]) by gateway.EECS.Berkeley.EDU (Netscape Messaging Server 4.15) with ESMTP id HTLTHC00.328 for ; Tue, 24 Feb 2004 11:44:00 -0800 Mime-Version: 1.0 (Apple Message framework v612) Content-Transfer-Encoding: 7bit Message-Id: Content-Type: text/plain; charset=US-ASCII; format=flowed To: avt@ietf.org From: "John Lazzaro" Date: Tue, 24 Feb 2004 11:43:59 -0800 X-Mailer: Apple Mail (2.612) X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Seoul-Summaries for rtp-midi and contrans I-Ds ... Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi everyone, I won't be in Seoul next week, but as the preliminary agenda shows: > Updates on behalf of author (Chairs) 5 > > draft-ietf-avt-midi-rtp-01.txt > draft-ietf-avt-midi-guidelines-01.txt > draft-ietf-avt-rtp-framing-contrans-00.txt The chairs will be presenting updates on my I-Ds for me (thanks!). By the way, note my correction above, an incorrect name for the contrans I-D appeared in the posted agenda. Here are my summaries for the I-Ds: > draft-ietf-avt-midi-rtp-01.txt > draft-ietf-avt-midi-guidelines-01.txt These are both "candidate Last Calls". When I released them, I considered them to be ready for Last Call, and asked IETFers and MMA-folks to seriously read them over and send final comments. The goal is that the next version be the real "Last Call" documents -- so, please read the documents over carefully and send comments soon! Don't feel obligated to read the whole thing -- for example, Offer/Answer-philes would do a service by reading the SDP descriptions in pages 20-26 and 68-96 of the format document. For: > draft-ietf-avt-rtp-framing-contrans-00.txt I'm awaiting MMUSIC's decisions on comedia -- since this I-D references comedia normatively and uses its syntax in examples, it makes sense to wait until comedia reaches its final form, and adapt the contrans I-D to fit it. --- John Lazzaro http://www.cs.berkeley.edu/~lazzaro lazzaro [at] cs [dot] berkeley [dot] edu --- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 24 18:47:35 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id SAA17584 for ; Tue, 24 Feb 2004 18:47:35 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvmGa-0000cg-L0 for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 18:47:09 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1ONl8PN002335 for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 18:47:08 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvmGS-0000ZW-Jw; Tue, 24 Feb 2004 18:47:00 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvmFm-0000VG-Ca for avt@optimus.ietf.org; Tue, 24 Feb 2004 18:46:18 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id SAA17523 for ; Tue, 24 Feb 2004 18:46:14 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvmFj-00002P-00 for avt@ietf.org; Tue, 24 Feb 2004 18:46:15 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvmEo-0007lV-00 for avt@ietf.org; Tue, 24 Feb 2004 18:45:19 -0500 Received: from porter.east.isi.edu ([65.114.168.19]) by ietf-mx with esmtp (Exim 4.12) id 1AvmDx-0007gu-00 for avt@ietf.org; Tue, 24 Feb 2004 18:44:25 -0500 Received: from [65.114.168.149] (java.east.isi.edu [65.114.168.149]) by porter.east.isi.edu (8.12.8/8.12.8) with ESMTP id i1ONiNwN010995; Tue, 24 Feb 2004 18:44:23 -0500 (EST) In-Reply-To: <4036268A.8020702@ericsson.com> References: <4036268A.8020702@ericsson.com> Mime-Version: 1.0 (Apple Message framework v612) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: <6AE638AA-6723-11D8-ADA6-000A95C47376@isi.edu> Content-Transfer-Encoding: 7bit Cc: IETF AVT WG From: Ladan Gharai Subject: Re: [AVT] Comments on draft-gharai-avt-tfrc-profile-00.txt Date: Tue, 24 Feb 2004 18:44:42 -0500 To: Magnus Westerlund X-Mailer: Apple Mail (2.612) X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Magnus: Thank you for your input. Please see comments inline. On Feb 20, 2004, at 10:23 AM, Magnus Westerlund wrote: > Hi, > > This draft is a very interesting piece of work. It contains a number > of interesting issues. Of which the first one is: > > Should we do this work in AVT? My personal opinion is that doing this > is probably a good thing. I am not especially optimistic about a quick > deployment of DCCP thus making it possible to use TFRC that way. > > I think that AVT is the right group for doing the profile as we know > RTP and RTCP best. However we will need TFRC expertise to join AVT so > that we don't miss some important limitation and ensure that TFRC will > work well. > > This is all something that will need discussion with our AD. Before we > can do this work we will need a recharter. > > > Further issues that will need to be discussed is: > > - I think that using a profile for this is probably the right way. Not > for the reason of the header changes which would make it required, > rather for the signalling that both end points needs to support the > feedback gathering and reporting correctly. This will clearly increase > the number of profiles with 2-4 new profiles. The reason is that the > old or on the way profiles needs to be expressed combined with > congestion control. I would think that combinations with SRTP and AVPF > is probably needed. > > - I think the header extensions proposed should be reconsidered. > Adding extra overhead if not really needed is not a good thing. As > also expressed in the draft there seems to be alternatives to the two > fields. I agree in the general principle of not adding overhead to the RTP header - but it should not be avoided at the cost of increasing bandwidth on the reverse path. > > Transmission timestamp. First it is possible to use sender side > measurements to perform the RTT measurements. Secondly the field does > not need to be 32 bits. I think somewhere around 24-16 bits is > sufficient. The only reason to add this field in my view seems to be > the extended feedback it could provide. We could for example fix the > jitter calculations by basing them on this field, instead of the > display timestamp. The main purpose of the transmission timestamp is to facilitate computation of the loss event rate at the receiver. Clearly, it can also be used for RTT, jitter and other calculations. As to the size of the field (if I have done the math correctly) at 90kHhz a 16bit timestamp would wrap around in less than a second, not sufficient. A 24bit field would wrap around in 186sec, which should be sufficient, as the loss event calculations are typically done over 8 to 16 TFRC loss intervals. > > The RTT field. To this field there are multiple alternatives. First, > run RTCP XR RTT measurements in each RTCP packet from the receiver. > Thus enabling the client to measure the RTT by itself. This would also > be consistent if a receiver is a sender also. Second alternative would > be to let the sender report the RTT to the receiver in each RTCP > packet from the sender. Two factors influence the approach taken for RTT measurement: 1) how often does the RTT need to be updated? and 2) how much extra bandwidth is being incurred on the reverse (or forward) path? While the current approach of adding 32bits to the RTP payload is undesirable due to overhead (perhaps we can allocate 22 to the transmission timestamp and 10 to the RTT?) it has the added simplicity of continuously updating the receiver and not requiring running RTCP XR RTT measurements or having the sender also generate a RTCP packets every RTT. > - I think extending the receiver report is a bad choice. I think > putting this extended report in another RTCP packet type is a better > choice. One alternative to a new RTCP packet type would be to use XR, > where there is a lot of extra code points. Both defining a new packet type and extending the receiver reports are good options. My choice of receiver reports was influenced by RFC3550's recommendation of extensions over new packet types (section 6.4.3) > > - Further the changes in the timing rules will need to be more closely > considered. The profile will basically require that one send at least > one RTCP packet per RTT. Thus the normal RTCP bandwidth assignment > rules goes mostly out of the window. Would also needs to consider how > one can use bandwidth limits or something other to determine how often > RTCP packets with more data can be sent. If one needs to send on RTCP > every RTT the RTCP bandwidth becomes dependent on the RTCP packet size > and the RTT only. Should some type of feedback path congestion control > be included in this? Is it time to start sequence number the RTCP > packets to determine the loss rate in the RTCP channel? > > - The proposal needs signalling for a number of attributes. This would > also need to be worked out when we know what needs signalling. > > Based on this, I would say that this is a significant amount of work > for the WG to undertake. Thus I would like to hear the opinion of the > participants in the WG about it. > > > Cheers > > > Magnus Westerlund > > Multimedia Technologies, Ericsson Research EAB/TVA/A > ---------------------------------------------------------------------- > Ericsson AB | Phone +46 8 4048287 > Torshamsgatan 23 | Fax +46 8 7575550 > S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com > > > > This communication is confidential and intended solely for the > addressee(s). Any unauthorized review, use, disclosure or distribution > is prohibited. If you believe this message has been sent to you in > error, please notify the sender by replying to this transmission and > delete the message without disclosing it. Thank you. > > E-mail including attachments is susceptible to data corruption, > interruption, unauthorized amendment, tampering and viruses, and we > only send and receive e-mails on the basis that we are not liable for > any such corruption, interception, amendment, tampering or viruses or > any consequences thereof. > > > _______________________________________________ > Audio/Video Transport Working Group > avt@ietf.org > https://www1.ietf.org/mailman/listinfo/avt > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Tue Feb 24 19:36:04 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id SAA17585 for ; Tue, 24 Feb 2004 18:47:35 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvmGa-0000ch-LP for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 18:47:09 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1ONl8Ur002337 for avt-archive@odin.ietf.org; Tue, 24 Feb 2004 18:47:08 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvmGT-0000Zf-9x; Tue, 24 Feb 2004 18:47:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvmFn-0000VL-5g for avt@optimus.ietf.org; Tue, 24 Feb 2004 18:46:19 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id SAA17526 for ; Tue, 24 Feb 2004 18:46:14 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AvmFj-00002W-00 for avt@ietf.org; Tue, 24 Feb 2004 18:46:16 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvmEs-0007lx-00 for avt@ietf.org; Tue, 24 Feb 2004 18:45:23 -0500 Received: from porter.east.isi.edu ([65.114.168.19]) by ietf-mx with esmtp (Exim 4.12) id 1AvmEA-0007hl-00 for avt@ietf.org; Tue, 24 Feb 2004 18:44:38 -0500 Received: from [65.114.168.149] (java.east.isi.edu [65.114.168.149]) by porter.east.isi.edu (8.12.8/8.12.8) with ESMTP id i1ONiNwO010995; Tue, 24 Feb 2004 18:44:38 -0500 (EST) In-Reply-To: <402AAC47.3090700@real.com> References: <4A55F4D4-5A9D-11D8-89ED-000A95C47376@isi.edu> <402AAC47.3090700@real.com> Mime-Version: 1.0 (Apple Message framework v612) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: <772353D0-6723-11D8-ADA6-000A95C47376@isi.edu> Content-Transfer-Encoding: 7bit Cc: avt@ietf.org From: Ladan Gharai Subject: Re: [AVT] New Draft: RTP Profile for TCP Friendly Rate Control Date: Tue, 24 Feb 2004 18:45:02 -0500 To: Damon Lanphear X-Mailer: Apple Mail (2.612) X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit On Feb 11, 2004, at 5:27 PM, Damon Lanphear wrote: > It should be possible to implement a sender based variant of TFRC > using the existing set of RTP protocol . The RTT can be deduced from > the RTCP RR at the sender, as can a loss event mapping. A loss event > is defined by TFRC as one or more packet losses in a single RTT. If > RTCP RRs are received once per RTT, then the loss event rate can be > reasonably deduced using the difference in the RTCP RR cumulative loss > field between consecuative RTCP RRs. Damon: While I like the idea of using the RTCP RR for computing the loss event rate it raises two issues. First, TFRC Loss Intervals do not correlate exactly to the RTT, however I do not have any data as to how sensitive TFRC is to the difference between these two? Secondly, it would put the burden of computing the loss event rate on the sender - as opposed to the receiver, as intended in RFC3448. The RTT calculations can be done by either the sender or receiver - but both the sender (for rate computation) and the receiver (for loss event calculation -or- as in your scheme to send RTCP packets) need know what the current RTT is. If the RTT is computed by the sender/receiver, some mechanism is needed to convey it to the receiver/sender. Ladan > > Ladan Gharai wrote: > >> Dear AVT'ers: >> >> I have just submitted a new draft >> draft-gharai-avt-tfrc-profile-00.txt to the Internet Drafts editor. >> The draft is also available on line at >> http://www.east.isi.edu/projects/MACC/tfrc-profile.txt >> >> This is a preliminary draft for a RTP profile for TFRC, "RTP/AVPCC". >> Please read and comment on the draft, in particular on the following >> two items: >> >> (I) A TFRC receiver depends on receiving estimates of the >> current RTT and the send time of each RTP packet, in order to compute >> its loss event rate. >> A simplistic approach to providing this information to the >> receiver is to add fixed fields to the RTP data header. This approach >> has a number of draw backs: (1) current implementations may not be >> able to parse such packets; (2) additional overhead of 8 octets in >> each data packet. >> Ideally, a TFRC receiver would be able to make do with the >> standard RTP time stamp (which denotes sampling or presentation time) >> - and would be able to compute the RTT itself (with the added bonus >> of also providing it to the TFRC sender). >> This raises two questions: (1) does the RTP time stamp suffice >> for loss event calculations? and (2) is it possible to have the >> receiver compute RTTs? >> >> >> (II) A TFRC sender requires feedback at least once per RTT. >> Depending on the data rate of a flow and the RTT, this TFRC >> requirement may result in violation of RTCPs minimum interval and >> bandwidth restrictions/recommendations. According to RFC3550 a >> profile MAY specify control traffic bandwidth as a separate session >> parameter. Is there a similar provision for profiles where the scaled >> minimum RTCP interval does not suffice? (i.e. where does the profile >> state that it cannot abide by the recommended minimum RTCP >> interval?) >> >> Ladan Gharai >> http://www.east.isi.edu/~ladan >> >> >> _______________________________________________ >> Audio/Video Transport Working Group >> avt@ietf.org >> https://www1.ietf.org/mailman/listinfo/avt > > > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 25 07:15:41 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA12656 for ; Wed, 25 Feb 2004 07:15:41 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvxwW-0002dz-7Y for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 07:15:12 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1PCFCD8010159 for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 07:15:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AvxwN-0002dB-AI; Wed, 25 Feb 2004 07:15:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Avxw6-0002cf-Sj for avt@optimus.ietf.org; Wed, 25 Feb 2004 07:14:46 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA12638 for ; Wed, 25 Feb 2004 07:14:45 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Avxw6-0007aW-00 for avt@ietf.org; Wed, 25 Feb 2004 07:14:46 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Avxv9-0007Vl-00 for avt@ietf.org; Wed, 25 Feb 2004 07:13:48 -0500 Received: from albatross-ext.wise.edt.ericsson.se ([193.180.251.49]) by ietf-mx with esmtp (Exim 4.12) id 1AvxuL-0007RI-00 for avt@ietf.org; Wed, 25 Feb 2004 07:12:57 -0500 Received: from esealmw142.al.sw.ericsson.se ([153.88.254.119]) by albatross-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1PCCvqY022837 for ; Wed, 25 Feb 2004 13:12:57 +0100 (MET) Received: from esealnt611.al.sw.ericsson.se ([153.88.254.121]) by esealmw142.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Wed, 25 Feb 2004 13:12:57 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt611.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FSLB0Z4L; Wed, 25 Feb 2004 13:13:08 +0100 Message-ID: <403C90A9.2060908@ericsson.com> Date: Wed, 25 Feb 2004 13:10:17 +0100 X-Sybari-Trust: 407220de c77f3eb6 b2f8f052 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Ladan Gharai CC: IETF AVT WG Subject: Re: [AVT] Comments on draft-gharai-avt-tfrc-profile-00.txt References: <4036268A.8020702@ericsson.com> <6AE638AA-6723-11D8-ADA6-000A95C47376@isi.edu> In-Reply-To: <6AE638AA-6723-11D8-ADA6-000A95C47376@isi.edu> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 25 Feb 2004 12:12:57.0043 (UTC) FILETIME=[B4067A30:01C3FB98] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi Ladan, comments inline. Ladan Gharai wrote: > > On Feb 20, 2004, at 10:23 AM, Magnus Westerlund wrote: >> >> - I think the header extensions proposed should be reconsidered. >> Adding extra overhead if not really needed is not a good thing. As >> also expressed in the draft there seems to be alternatives to the two >> fields. > > > I agree in the general principle of not adding overhead to the RTP > header - but it should not be avoided at the cost of increasing > bandwidth on the reverse path. > I think the trade off would need analyses. For the first would using RTCP with extensions be sufficient for TFRC's need? Secondly how big overhead would really be introduced in either solution. Third some of the RTCP overhead would be in both directions. The reason I consider the trade-off is the RTP to RTCP rates. Without TFRC there will normally be rather many RTP packets for every RTCP packet. With one RTCP per RTT this will no longer be general true, risk of low RTT transport plus few RTP packets could at worst case be less than one RTP packet per RTCP packet. RTT 10 ms means that one must send 100 RTP packets per second to have one RTP packet per RTCP packet. Thus the overhead trade off is a bit harder. However at the same time you will need to send one receiver to sender feedback message every RTT anyway. >> >> Transmission timestamp. First it is possible to use sender side >> measurements to perform the RTT measurements. Secondly the field does >> not need to be 32 bits. I think somewhere around 24-16 bits is >> sufficient. The only reason to add this field in my view seems to be >> the extended feedback it could provide. We could for example fix the >> jitter calculations by basing them on this field, instead of the >> display timestamp. > > > The main purpose of the transmission timestamp is to facilitate > computation of the loss event rate at the receiver. Clearly, it can > also be used for RTT, jitter and other calculations. Having looked at RFC 3448 I see that a transmission timestamp seems to be needed for determining what loss event each loss should belong to. However the resolution necessary for this purpose seems to be four increments per interval. Thus a 32-bit timestamp seems unnecessary large, more about this below. > > As to the size of the field (if I have done the math correctly) at > 90kHhz a 16bit timestamp would wrap around in less than a second, not > sufficient. A 24bit field would wrap around in 186sec, which should be > sufficient, as the loss event calculations are typically done over 8 to > 16 TFRC loss intervals. But you used a 90 kHz clock. My idea for this field would be to use a fixed clock rate, not connect it to the media clock rate at all. Thus one can ensure one has sufficient resolution, while being able to more efficiently adapt the size of the field. I think a fixed clock rate of somewhere between 1000 and 10000 Hz would be suitable. Input into this is certainly a topic of discussion. A quick glance at RFC 3448 seems to indicate that this transmission timestamp does not need any huge resolution, milliseconds is probably more than sufficient. As a side note, how does TFRC behaves when the packet transmission rate drops below one packet per RTT? I think this case can be rather common for local area networks. > >> >> The RTT field. To this field there are multiple alternatives. First, >> run RTCP XR RTT measurements in each RTCP packet from the receiver. >> Thus enabling the client to measure the RTT by itself. This would also >> be consistent if a receiver is a sender also. Second alternative would >> be to let the sender report the RTT to the receiver in each RTCP >> packet from the sender. > > > Two factors influence the approach taken for RTT measurement: 1) how > often does the RTT need to be updated? and 2) how much extra bandwidth > is being incurred on the reverse (or forward) path? > While the current approach of adding 32bits to the RTP payload is > undesirable due to overhead (perhaps we can allocate 22 to the > transmission timestamp and 10 to the RTT?) it has the added simplicity > of continuously updating the receiver and not requiring running RTCP XR > RTT measurements or having the sender also generate a RTCP packets every > RTT. I understand the reasoning. But don't you anyway needs to send one RTCP packet from receiver to sender every RTT to ensure that the sender gets feedback for each RTT interval. Thus if this traffic goes there anyway and the overhead in RTP or RTCP is on the same order of magnitude, then having the necessary information in RTCP would avoid sending it more often than needed. > > >> - I think extending the receiver report is a bad choice. I think >> putting this extended report in another RTCP packet type is a better >> choice. One alternative to a new RTCP packet type would be to use XR, >> where there is a lot of extra code points. > > > Both defining a new packet type and extending the receiver reports are > good options. My choice of receiver reports was influenced by RFC3550's > recommendation of extensions over new packet types (section 6.4.3) > In my opinion changing the RR or SR packets creates a higher implementation burden thus making the deployment a bit harder. However I think this discussion can wait until we know what fields that needs to be transported, how often, and how big they are. At that time we will have the necessary input into this discussion. Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 25 09:11:42 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA17217 for ; Wed, 25 Feb 2004 09:11:42 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Avzkm-0003nm-OR for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 09:11:14 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1PEBCw7014562 for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 09:11:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Avzkd-0003lP-01; Wed, 25 Feb 2004 09:11:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Avzjt-0003iZ-OD for avt@optimus.ietf.org; Wed, 25 Feb 2004 09:10:18 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA17144 for ; Wed, 25 Feb 2004 09:10:15 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Avzjs-0003Z4-00 for avt@ietf.org; Wed, 25 Feb 2004 09:10:16 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AvzjA-0003QU-00 for avt@ietf.org; Wed, 25 Feb 2004 09:09:33 -0500 Received: from mail.pel.panasonic.de ([194.162.191.12]) by ietf-mx with esmtp (Exim 4.12) id 1AvziG-0003FB-00 for avt@ietf.org; Wed, 25 Feb 2004 09:08:36 -0500 Received: from MCOMREYJ ([10.10.100.173]) by mail.pel.panasonic.de with Microsoft SMTPSVC(5.0.2195.6713); Wed, 25 Feb 2004 15:07:05 +0100 From: "Jose Rey" To: Cc: "Jan van der Meer" , "Dave Singer" , "Rolf Hakenberg" , "Magnus Westerlund" , "Per Frojdh" Date: Wed, 25 Feb 2004 15:07:25 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) x-mimeole: Produced By Microsoft MimeOLE V5.50.4927.1200 Importance: Normal X-OriginalArrivalTime: 25 Feb 2004 14:07:05.0187 (UTC) FILETIME=[A5D65330:01C3FBA8] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Issues in Timed Text draft Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi all, these are the issues on which I would like to get some feedback during/before the meeting: - design rationale: a text sample consists typically of a text string followed by some modifiers (decoration). Associated to a text sample there may be several (or none) sample descriptions. The draft defines headers to convey both whole text samples and fragments thereof (note that fragmentation should be rare). The draft allows only text string fragments to be displayed individually. This meaning that if you receive a single text string fragment out of three you may use/display it. Unlike the case where you don't receive some fragment(s) of the decoration: in this case you SHOULD not use it/them, because it is not required that decoration be splitted at meaningful boundaries (this was in the -01 draft and thought too complex for the rare cases of fragmentation). See also section 4.1 in draft. Comments? - ordering of text sample contents: the modifier fragments don't contain timing attributes (because they apply to text strings which already have them, then why repeat?). Sample descriptions (which may apply to more than one text sample) don't have them either. Currently the draft allows to place these modifier fragments and sample descriptions anywhere and as often as needed. This is useful, for example, to specially protect some parts of the text sample or to send in advance the modifiers of a very long piece of text. For live streaming this might not be the best method as the timing is tight but for streaming it is a valid option. Problems with that? Note that IDs (SIDX) are used to match fragments without timing attributes to their text samples. See also Section 4.1 - resilient transport: of course apart from repeating the fragments in different packets as above you may also repeat the packets themselves, protect them using FEC or retransmit them. The first two shall be more apppropriate for streaming scenarios where a pre-determined packetisation exists previous to transmission. See sections 4.1 and 5. The implementer SHALL ensure that the different pieces meet the timing requirements when they are spread over several packets. - TYPE=3: the draft explictly prohibits combining text strings and modifiers in a fragment. The reason is simplicity: since text strings shall be capable of being displayed individually it would be necessary to introduce a field in the header that explicitly says where the first byte of modifiers is. This is avoided by forcing the first modifiers fragment to be indicated by means of a dedicated header type, TYPE=3. See section 4.2. Comments? - In-band vs. out-of-band: the draft currently specifies two possibilities to transport sample descriptions: in-band and out-of-band. While out-of-band is mandatory, the same does not apply to in-band. However how about making the two mandatory? (i.e. header TYPE=5). At first we thought of in-band just for live streaming of text. But it also makes sense for pre-packaged content. Both mandatory? - Payload header design (section 4.2): the draft specifies an AU-like payload structure (similar to RFC3640 for compatibility). Currently there are 5 payload header types TYPE 1 : for whole text samples |R|U|L|TYPE|{LEN}|SIDX|SDUR| 5-7 bytes long TYPE 2: for text string fragments |R|U|L|TYPE|{LEN}|SIDX|SLEN|SDUR|TOTL|THIS| 8-10 bytes long TYPE 3&4: for first modifier fragment (TYPE=3) and subsequent fragments. |R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long TYPE 5: for sample descriptions. |R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long One could say that these be reduced to three by making the TOTL/THIS counter refer to the number of fragments of a text string and modifier boxes in a text sample instead of the total of fragments, like this: [NOTE: {} means optional || fixed] TYPE 1 : for whole text samples and fragments |R|U|L|TYPE|{LEN}|SLEN|SIDX|SDUR|TOTL|THIS| 8-10 bytes long TYPE 2: for ALL modifier fragments |R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long TYPE 3: for sample descriptions. |R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long The benefit, if any, is that the number of headers is reduced . Some disadvantages are: an increase in the average header size (assuming that fragmentation is rare), a more complex use of TOTL/THIS and of the SLEN/LEN fields. Another disadvantage is that it should be more costly for RFC 3640 to identify the AUs because TOTL/THIS is in the "AU-data contents" part. So, at the moment we don't see a clear motivation to change to this header configuration. Comments? Thanks for your comments, ------------------------------- Jose Rey Mobile Multimedia Team Panasonic European Labs GmbH D-63225 Langen, Germany Tel.:+49-6103-766-134 Fax :+49-6103-766-166 Email: rey@panasonic.de Visit: www.pel.panasonic.de ------------------------------- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 25 09:46:36 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA18614 for ; Wed, 25 Feb 2004 09:46:35 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw0Ia-0007Mn-2f for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 09:46:08 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1PEk8t4028265 for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 09:46:08 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw0IT-0007L8-RM; Wed, 25 Feb 2004 09:46:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw0IF-0007Km-IV for avt@optimus.ietf.org; Wed, 25 Feb 2004 09:45:47 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA18598 for ; Wed, 25 Feb 2004 09:45:44 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aw0ID-0006zj-00 for avt@ietf.org; Wed, 25 Feb 2004 09:45:45 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Aw0HF-0006uz-00 for avt@ietf.org; Wed, 25 Feb 2004 09:44:45 -0500 Received: from mail.sonusnet.com ([208.45.178.33] helo=revere.sonusnet.com) by ietf-mx with esmtp (Exim 4.12) id 1Aw0GO-0006lw-00 for avt@ietf.org; Wed, 25 Feb 2004 09:43:52 -0500 Received: from sonusms1.sonusnet.com (sonusms1 [10.128.32.93]) by revere.sonusnet.com (Switch-3.1.2/Switch-3.1.0) with ESMTP id i1PEhLFh020906 for ; Wed, 25 Feb 2004 09:43:21 -0500 (EST) Received: from sonusmail03.sonusnet.com (unverified) by sonusms1.sonusnet.com (Content Technologies SMTPRS 4.3.12) with ESMTP id ; Wed, 25 Feb 2004 09:43:04 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Subject: RE: [AVT] Comments on draft-gharai-avt-tfrc-profile-00.txt Date: Wed, 25 Feb 2004 09:42:45 -0500 Message-ID: Thread-Topic: [AVT] Comments on draft-gharai-avt-tfrc-profile-00.txt Thread-Index: AcP7mSMtft894ncOQ7qaLQbrIJ9WMwAEa02g From: "Phelan, Tom" To: "Magnus Westerlund" Cc: "IETF AVT WG" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Hi Magnus, [Clipped ...] > As a side note, how does TFRC behaves when the packet=20 > transmission rate=20 > drops below one packet per RTT? I think this case can be=20 > rather common=20 > for local area networks. When the sender is sending less than one packet per RTT, the receiver = sends acknowledgements for each received packet, not once per RTT. If = the sending rate is less than four times the RTT the sender must be = careful with its no feedback timer (normally when this timer expires the = allowed sending rate is halved). Tom P. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 25 10:35:36 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA22214 for ; Wed, 25 Feb 2004 10:35:36 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw141-0001Pm-A1 for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 10:35:09 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1PFZ979005405 for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 10:35:09 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw13v-0001Nz-2g; Wed, 25 Feb 2004 10:35:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw13h-0001Mr-62 for avt@optimus.ietf.org; 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Wed, 25 Feb 2004 10:43:13 -0500 Received: from eagle.ericsson.se ([193.180.251.53]) by ietf-mx with esmtp (Exim 4.12) id 1Aw1BK-0005Tw-00 for avt@ietf.org; Wed, 25 Feb 2004 10:42:42 -0500 Received: from esealmw140.al.sw.ericsson.se ([153.88.254.121]) by eagle.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1PFgfAh008690 for ; Wed, 25 Feb 2004 16:42:41 +0100 Received: from esealnt613.al.sw.ericsson.se ([153.88.254.125]) by esealmw140.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Wed, 25 Feb 2004 16:42:41 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt613.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FSMBP4MH; Wed, 25 Feb 2004 16:42:41 +0100 Message-ID: <403CC1D1.2040500@ericsson.com> Date: Wed, 25 Feb 2004 16:40:01 +0100 X-Sybari-Trust: 4f13ee94 c77f3eb6 0a449737 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: Matthew Romaine CC: avt@ietf.org, Mitsuyuki Hatanaka , Jun Matsumoto Subject: Re: [AVT] Re: ATRAC Family Payload update References: <4039FC3E.2080109@ericsson.com> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 25 Feb 2004 15:42:41.0504 (UTC) FILETIME=[00F2D600:01C3FBB6] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL,LINES_OF_YELLING, LINES_OF_YELLING_2 autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi, comments inline. Matthew Romaine wrote: > Magnus, > > Thanks for your help. Responses inlined: > > >>Also does a specific channel assignment rule for the number exist? Are > > >>you using the one in RFC 3551 with extension for 7 and 8 channels? > > > The channel assignments charted in RFC 3551 don't really work for us, > since for one thing an LFE channel is not specified. So I'll add a > similar chart for channel assignments in the draft. Thanks for > pointing this out. > Good, > >>Also I think you should consider how you intend to use the frame >>sample size and the frame length parameters. In what directions does > > >>they in fact apply between a sender and receiver? > > > This information is needed to initialize the decoder on the receiving > side; rather than send it every packet, we thought making it a MIME > parameter would allow for its use during SDP negotiations. Is there > something more we need to consider? > Not knowing enough about the codec I can't determine what in my opinion would be the most suitable place for this information. If the frame sample size normal is fixed for a transaction then having it encoded through the payload is the correct choice. Otherwise some other indication might be more appropriate. > >>How common is it expected to change the number of channels in a RTP >>stream, i.e. for the same SSRC? If it possible to change at all, have > > >>you considered the problems, see my mail about this. >>http://www1.ietf.org/mail-archive/working-groups/avt/current/ >>msg03384.html > > > Our current thinking is to use translators and perhaps mixers to handle > > changes in the number of channels. Our initial payload proposals which > > we have since dropped did try to allow for channel changes mid-stream, > but we have decided to forgo that feature. Basically, we were trying > to project a payload format that assumed a scalable codec onto a > non-scalable one (in the strictest sense, anyways). So at the moment > we do not plan on having the number of channels change w/o a > re-negotiation via SDP. > As you do not intend to have channel changes being common I think the one PT per channel configuration is the correct choice. Thus one can define multiple payload types that maps to different channel configurations. Thus a receiver will know of the possibility of switching channel information mid session. Of course if one declares only one and later needs to change one can in some of the application update the SDP. > >>The problem I see is that Frame Offset if used needs to be defined for > > >>each frame in the payload. However what I understand it only occurs >>one in the payload header. Thus I can't understand why one can't use >>the timestamp to place the data correct. > > > Just to be clear, multiple audio frames in a packet (with a maximum of > 16) must be stored sequentially. So I'm not quite sure why you think > each frame needs the FrOff field....hm... Since our timestamp will be > sample based, our initial thinking was to have sequential packets > increase their timestamp by the number of samples sent in the previous > packet. We were thinking the timestamp should basically not be > manipulated beyond increasing it as necessary for each succeeding > packet (shouldn't there be at least one field that is atomically > increasing?) Thus, when sending redundant frames, we have a field to > indicate how many 'previous frames' are being sent instead of changing > the timestamp. Since a packet can only hold up to 16 audio frames > (where a single frame can hold up to 1 to 8 channels of encoded audio > -- see next response), there is a maximum difference possible between > the "current timestamp" and the largest allowable "rewind". By doing > this, we ensure the stream will progress; if we allow manipulations of > the timestamp, who knows what some crazy implementor may do :) Also > keep in mind that we are allowing previous frames to be followed by new > > frames, all in the same packet. Maybe this ASCII visualization will > help: > > |---Fr1--|--Fr2--|--Fr3--|--Fr4--|--Fr5--| Nth Packet > > |--Fr3--|--Fr4--|--Fr5--|--Fr6--|--Fr7--| > > N+1th Packet > > In this case, the "N+1th" packet would have it's FrOff field = 3, since > > the timestamp in packet "N+1" would indicate where Fr6 should start. > > I suppose there are a few ways to do the same thing.... is there > something we are missing with this approach? > Okay, now I understand your approach. I think the main problem with this approach is that the RTP timestamp does not reflect the oldest data in the packet. I think there are more simple ways informing the client what buffer needs a stream with redundancy would need. So I would be more interested in using a TS that actually points on earliest frame in the packet. If you are looking on your example from a TS perspective it looks like this: #1 #2 #3 #4 #5 TS = 4 #3 #4 #5 #6 #7 TS = 6 #5 #6 #7 #8 #9 TS = 8 If one uses a earliest possible scheme it would instead look like: #1 #2 #3 #4 #5 TS = 1 #3 #4 #5 #6 #7 TS = 3 #5 #6 #7 #8 #9 TS = 5 In this case one could signal max-overlapp=3 to tell the receiver that this may contain redundant data up to 3 frames old, and thus buffer for a minimum of 3 frames to be able to take advantage of the data. So in my opinion this bits are basically wasted. They do not give any advantage which can't not be achieved through other means without spending bits in the payload header. Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 25 12:35:33 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA01816 for ; Wed, 25 Feb 2004 12:35:33 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw2w6-0004Xp-Ch for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 12:35:06 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1PHZ6gn017465 for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 12:35:06 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw2w3-0004X3-3J; Wed, 25 Feb 2004 12:35:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw2vv-0004Vt-Qq for avt@optimus.ietf.org; Wed, 25 Feb 2004 12:34:55 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA01794 for ; Wed, 25 Feb 2004 12:34:52 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aw2vu-0004k2-00 for avt@ietf.org; Wed, 25 Feb 2004 12:34:54 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Aw2uz-0004fU-00 for avt@ietf.org; Wed, 25 Feb 2004 12:33:59 -0500 Received: from albatross-ext.wise.edt.ericsson.se ([193.180.251.49]) by ietf-mx with esmtp (Exim 4.12) id 1Aw2uS-0004ay-00 for avt@ietf.org; Wed, 25 Feb 2004 12:33:24 -0500 Received: from esealmw141.al.sw.ericsson.se ([153.88.254.120]) by albatross-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1PHXNqY009066 for ; Wed, 25 Feb 2004 18:33:23 +0100 (MET) Received: from esealnt611.al.sw.ericsson.se ([153.88.254.121]) by esealmw141.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Wed, 25 Feb 2004 18:33:23 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt611.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FSLCDJ3K; Wed, 25 Feb 2004 18:33:35 +0100 Message-ID: <403CDBC3.5030107@ericsson.com> Date: Wed, 25 Feb 2004 18:30:43 +0100 X-Sybari-Trust: 9191cbe3 c77f3eb6 0a449737 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: IETF AVT WG Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 25 Feb 2004 17:33:23.0278 (UTC) FILETIME=[77C11EE0:01C3FBC5] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] Comments on draft-rey-avt-3gpp-timed-text-02.txtU Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Hi Jose, Here is a number of comments on your draft. I like this much more than the previous proposal. 1. In the next update don't forget to update all the boilerplate for IPR and copyright according to RFC 3667 and 3668. 2. Abstract: "3GPP timed text is time-lined decorated text media format whose defined storage format is the ISO (International Standardisation Organisation) Base Media File Format." This is not correct. the 3GPP Timed text is stored in the 3GP file format, which is based on the ISO Base Media File Format. 3. section 2, second paragraph: "3GPP timed text is a 3GP file format for time-lined decorated text specified in [1]." I would say that "3GPP Timed Text is a media format for time-lined decorated text, with a defined storage in the 3GP file format." 4. Section 2.1, bullet 3: "This is especially useful for live streaming (where the contents are not known a priori) or to protect this information through other mechanisms like FEC [4] or retransmission [13]." The second part of the sentence is not correct. The possibility to protect the important sample descriptions are not a reason for having in-band sample descriptions. So please split it out, as FEC and retransmission is means to make it work. 5. Section 3, first bullet. "A text sample contains a text length indication, a text string, and zero or several modifier boxes (the decoration of the text)." Is not "zero or more" a better term, or is it impossible to have only one modifier box? 6. Section 3, bullet list. Please adjust the formatting, having the lines after the first be adjusted further in so the "-" mark i alone at the left makes it more clear that it is a bullet list. 7. Section 3, second bullet: "A fragment may either text strings and modifiers or just one of these." This sentence is very strange. 8. Section 4, Marker bit: The current definition is unclear if one only has a single complete text sample, should one have the marker bit set or not. 9. Section 4, Timestamp: By putting the word "earliest" in the first sentence of the timestamp paragraph, you will not have to redefine the initial meaning a few lines down and it fits both single and multi sample cases. I would also think about using normative SHALL or MUST in the definition to make readers aware of that this is something important to follow. 10. Section 4, Timestamp: "The value timestamp clockrate is copied directly from the 3GP file: the value of "timescale" in the Media Header Box is to be used." Is this a SHALL or SHOULD? With the RTP payload it will be possible to create 3GPP Timed text without ever storing it first. Therefore I think that some general guidance on timestamp rates should be written. Also, is the clock rate in the 3GP file fixed or can it be different between different files. 11. Section 4.1: "It appears more appropriate to encode text samples without taking the path MTU into account." I think that it most applications is will be rather easy to ensure that created samples are not to big. 12. section 4.1, Third bullet: "- it is RECOMMENDED to include as fewer text sample fragments as possible in an RTP packet." First the language is wrong "few" instead of "fewer". Secondly, should one really include multiple fragments in a RTP packet. Isn't it much better to ensure that one does not fragment. 13. Section 4.2: It is not clear if the payload are formed: header header data data, or header data header data. could you please clarify. 14. Section 4.2, the payload header? Is there a reason why the reserved bits are left most in the first byte? Otherwise I would recommend them to be placed between UL and TYPE. That way the bits could in the future either be used to extend the TYPE field or for more indication bits. 15. Section 4.2, L definition. "By default this flag is reset." I guess that reset is having the bit take the value of 0. Please define reset if you are going to use it. 16. Section 4.2, The L bit. Is is really worth having the length field as a variable field. It will be needed in all cases except when only a single data unit is in a packet. Thus I don't think the overhead from these two bytes are in anyway excessive. The number of RTP packets from timed text are rather few. In a subtitling usage, their is only a single new sample every few seconds. I think simplicity is an advantage here. 17. Section 4.2, SIDX: "To allow SIDX wrap-up, clients SHALL keep as valid only those values of SIDX outside of the interval (X+128) modulo 255, where X is the last SIDX value received." I think you need to specify it as an interval not a single value which (X+128) modulo 255 are. I think you should define this as a client shall only use the sample entries that are (X-127)..(X) modulo 255. 18. Section 4.2, SDUR: "However, samples of unknown duration MAY precede sample descriptions, as they have no duration." I think duration is the wrong word here. Sample descriptions is lacking timing information. They are simply sent out and exist. 19. Section 4.2: I think that making each type format its own sub-chapter and giving the name would increase the readability. 20. section 4.2: Type=2: If you make the Len field permanent I think the SDUR field should be shifted left one byte, the SLEN moved to the end and the TOTAL|This byte precede the SDUR field, that way one allows for easier processing of the fields on a 32 bit machine. 21. Section 4. type 2, TOTAL and THIS. I think the rules for how one can send fragments in relation to other packets needs to be clarified. In general I think the fragmentation concept could be explained on a more general level. The concept of having different types for splitting text and modifiers and that different rules apply could be explained prior to defining the boxes. 22. section 8. Please add an statement that unknown parameters SHALL be ignored. That way there is some chance of extending the format in a predictable way in the future. 23. Section 8. The reference to the timed text specification. Are you referring to the release 5 or release 6. As the release 6 is not yet frozen, how is the intended timing between the payload format and the timed text specification for release 6? 24. Section 9. You have two definitions of how the parameters intended for the "a=fmtp" line shall be mapped. Ether you keep the two line stating "the REQUIRED .." and "The OPTIONAL", or you use only the following line. 25. Section 9.1, the mapping of the clockrate is unclear. It does not state exactly to what the 3GP file formats "timescale" value shall be copied to. Also must this really be done, one could translate all times if desired. 26. Section 9. Missing Offer Answer section. 27. Section 11. Please write the IANA section as a statement what IANA must do. In this case it seems appropriate to write. "IANA is request to register one MIME type (3GPP-tt) as defined by section 8." 28. Section 12. Are there any data in the 3GPP timed text media format that can be introduced that would result in significant higher processing requirements for a receiver, thus enabling DOS attacks? Cheers Magnus -- Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 25 17:03:43 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA18010 for ; Wed, 25 Feb 2004 17:03:43 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw77Z-0007Nf-Cd for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 17:03:16 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1PM3D6X028368 for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 17:03:13 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw77O-0007KL-JH; Wed, 25 Feb 2004 17:03:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw76z-0007Bj-2z for avt@optimus.ietf.org; Wed, 25 Feb 2004 17:02:37 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA17820 for ; Wed, 25 Feb 2004 17:02:33 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aw76w-0002sN-00 for avt@ietf.org; Wed, 25 Feb 2004 17:02:34 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Aw75Z-0002gO-00 for avt@ietf.org; Wed, 25 Feb 2004 17:01:10 -0500 Received: from smtp.eweka.nl ([81.171.101.3]) by ietf-mx with esmtp (Exim 4.12) id 1Aw74Z-0002XN-00 for avt@ietf.org; Wed, 25 Feb 2004 17:00:07 -0500 Received: from solstice (ew-dsl-81-171-14-60.eweka.nl [81.171.14.60]) by smtp.eweka.nl (8.12.9/8.12.9) with ESMTP id i1PMA8rb006029; Wed, 25 Feb 2004 22:10:12 GMT (envelope-from a.vwijk@viataal.nl) Message-Id: <200402252210.i1PMA8rb006029@smtp.eweka.nl> From: "Arnoud van Wijk" To: "'Jose Rey'" , Cc: "'Jan van der Meer'" , "'Dave Singer'" , "'Rolf Hakenberg'" , "'Magnus Westerlund'" , "'Per Frojdh'" Subject: RE: [AVT] Issues in Timed Text draft Date: Wed, 25 Feb 2004 23:00:02 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook, Build 11.0.5510 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Thread-Index: AcP7qVrsGDCcMUHVS8ajiOTP3NAXJQAQU0qw X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL,MISSING_OUTLOOK_NAME autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Umm this timed text, what is it for exactly? Text telephony? Or? Thanks Drs. Arnoud A. T. van Wijk Viataal Research & Development Afdeling RDS Theerestraat 42 5271 GD Sint-Michielsgestel The Netherlands. Mobile: +31651921948 International text telephone: +31735588408 -----Original Message----- From: avt-admin@ietf.org [mailto:avt-admin@ietf.org] On Behalf Of Jose Rey Sent: woensdag 25 februari 2004 15:07 To: avt@ietf.org Cc: Jan van der Meer; Dave Singer; Rolf Hakenberg; Magnus Westerlund; Per Frojdh Subject: [AVT] Issues in Timed Text draft Hi all, these are the issues on which I would like to get some feedback during/before the meeting: - design rationale: a text sample consists typically of a text string followed by some modifiers (decoration). Associated to a text sample there may be several (or none) sample descriptions. The draft defines headers to convey both whole text samples and fragments thereof (note that fragmentation should be rare). The draft allows only text string fragments to be displayed individually. This meaning that if you receive a single text string fragment out of three you may use/display it. Unlike the case where you don't receive some fragment(s) of the decoration: in this case you SHOULD not use it/them, because it is not required that decoration be splitted at meaningful boundaries (this was in the -01 draft and thought too complex for the rare cases of fragmentation). See also section 4.1 in draft. Comments? - ordering of text sample contents: the modifier fragments don't contain timing attributes (because they apply to text strings which already have them, then why repeat?). Sample descriptions (which may apply to more than one text sample) don't have them either. Currently the draft allows to place these modifier fragments and sample descriptions anywhere and as often as needed. This is useful, for example, to specially protect some parts of the text sample or to send in advance the modifiers of a very long piece of text. For live streaming this might not be the best method as the timing is tight but for streaming it is a valid option. Problems with that? Note that IDs (SIDX) are used to match fragments without timing attributes to their text samples. See also Section 4.1 - resilient transport: of course apart from repeating the fragments in different packets as above you may also repeat the packets themselves, protect them using FEC or retransmit them. The first two shall be more apppropriate for streaming scenarios where a pre-determined packetisation exists previous to transmission. See sections 4.1 and 5. The implementer SHALL ensure that the different pieces meet the timing requirements when they are spread over several packets. - TYPE=3: the draft explictly prohibits combining text strings and modifiers in a fragment. The reason is simplicity: since text strings shall be capable of being displayed individually it would be necessary to introduce a field in the header that explicitly says where the first byte of modifiers is. This is avoided by forcing the first modifiers fragment to be indicated by means of a dedicated header type, TYPE=3. See section 4.2. Comments? - In-band vs. out-of-band: the draft currently specifies two possibilities to transport sample descriptions: in-band and out-of-band. While out-of-band is mandatory, the same does not apply to in-band. However how about making the two mandatory? (i.e. header TYPE=5). At first we thought of in-band just for live streaming of text. But it also makes sense for pre-packaged content. Both mandatory? - Payload header design (section 4.2): the draft specifies an AU-like payload structure (similar to RFC3640 for compatibility). Currently there are 5 payload header types TYPE 1 : for whole text samples |R|U|L|TYPE|{LEN}|SIDX|SDUR| 5-7 bytes long TYPE 2: for text string fragments |R|U|L|TYPE|{LEN}|SIDX|SLEN|SDUR|TOTL|THIS| 8-10 bytes long TYPE 3&4: for first modifier fragment (TYPE=3) and subsequent fragments. |R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long TYPE 5: for sample descriptions. |R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long One could say that these be reduced to three by making the TOTL/THIS counter refer to the number of fragments of a text string and modifier boxes in a text sample instead of the total of fragments, like this: [NOTE: {} means optional || fixed] TYPE 1 : for whole text samples and fragments |R|U|L|TYPE|{LEN}|SLEN|SIDX|SDUR|TOTL|THIS| 8-10 bytes long TYPE 2: for ALL modifier fragments |R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long TYPE 3: for sample descriptions. |R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long The benefit, if any, is that the number of headers is reduced . Some disadvantages are: an increase in the average header size (assuming that fragmentation is rare), a more complex use of TOTL/THIS and of the SLEN/LEN fields. Another disadvantage is that it should be more costly for RFC 3640 to identify the AUs because TOTL/THIS is in the "AU-data contents" part. So, at the moment we don't see a clear motivation to change to this header configuration. Comments? Thanks for your comments, ------------------------------- Jose Rey Mobile Multimedia Team Panasonic European Labs GmbH D-63225 Langen, Germany Tel.:+49-6103-766-134 Fax :+49-6103-766-166 Email: rey@panasonic.de Visit: www.pel.panasonic.de ------------------------------- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Wed Feb 25 17:24:30 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA19321 for ; Wed, 25 Feb 2004 17:24:30 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw7Rj-0001cy-Dn for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 17:24:03 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1PMO3Up006239 for avt-archive@odin.ietf.org; Wed, 25 Feb 2004 17:24:03 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw7Rh-0001bx-VF; Wed, 25 Feb 2004 17:24:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Aw7Qr-0001al-N3 for avt@optimus.ietf.org; Wed, 25 Feb 2004 17:23:09 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA19274 for ; Wed, 25 Feb 2004 17:23:05 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Aw7Qp-0005Mb-00 for avt@ietf.org; Wed, 25 Feb 2004 17:23:07 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Aw7Pv-0005HH-00 for avt@ietf.org; Wed, 25 Feb 2004 17:22:12 -0500 Received: from mail3.pi.se ([195.7.64.137] ident=root) by ietf-mx with esmtp (Exim 4.12) id 1Aw7Pg-0005C0-00 for avt@ietf.org; Wed, 25 Feb 2004 17:21:56 -0500 Received: from vit (h161n2fls31o265.telia.com [217.208.189.161]) (authenticated (0 bits)) by mail3.pi.se (8.12.10/8.11.2) with ESMTP id i1PMK0Ui003647; Wed, 25 Feb 2004 23:20:01 +0100 (CET) From: "Gunnar Hellstrom" To: "Arnoud van Wijk" , "'Jose Rey'" , Cc: "'Jan van der Meer'" , "'Dave Singer'" , "'Rolf Hakenberg'" , "'Magnus Westerlund'" , "'Per Frojdh'" Subject: RE: [AVT] Issues in Timed Text draft Date: Wed, 25 Feb 2004 23:21:57 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Importance: Normal In-Reply-To: <200402252210.i1PMA8rb006029@smtp.eweka.nl> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.2 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Subtitling in stored media. That is why it is timed. Timed to the part of video it belongs to. Gunnar. ------------------------------------------- Gunnar Hellstrom Omnitor AB Renathvagen 2 SE 121 37 Johanneshov SWEDEN +46 8 556 002 03 Mob: +46 708 204 288 www.omnitor.se Gunnar.Hellstrom@Omnitor.se -------------------------------------------- -----Original Message----- From: avt-admin@ietf.org [mailto:avt-admin@ietf.org]On Behalf Of Arnoud van Wijk Sent: Wednesday, February 25, 2004 11:00 PM To: 'Jose Rey'; avt@ietf.org Cc: 'Jan van der Meer'; 'Dave Singer'; 'Rolf Hakenberg'; 'Magnus Westerlund'; 'Per Frojdh' Subject: RE: [AVT] Issues in Timed Text draft Umm this timed text, what is it for exactly? Text telephony? Or? Thanks Drs. Arnoud A. T. van Wijk Viataal Research & Development Afdeling RDS Theerestraat 42 5271 GD Sint-Michielsgestel The Netherlands. Mobile: +31651921948 International text telephone: +31735588408 -----Original Message----- From: avt-admin@ietf.org [mailto:avt-admin@ietf.org] On Behalf Of Jose Rey Sent: woensdag 25 februari 2004 15:07 To: avt@ietf.org Cc: Jan van der Meer; Dave Singer; Rolf Hakenberg; Magnus Westerlund; Per Frojdh Subject: [AVT] Issues in Timed Text draft Hi all, these are the issues on which I would like to get some feedback during/before the meeting: - design rationale: a text sample consists typically of a text string followed by some modifiers (decoration). Associated to a text sample there may be several (or none) sample descriptions. The draft defines headers to convey both whole text samples and fragments thereof (note that fragmentation should be rare). The draft allows only text string fragments to be displayed individually. This meaning that if you receive a single text string fragment out of three you may use/display it. Unlike the case where you don't receive some fragment(s) of the decoration: in this case you SHOULD not use it/them, because it is not required that decoration be splitted at meaningful boundaries (this was in the -01 draft and thought too complex for the rare cases of fragmentation). See also section 4.1 in draft. Comments? - ordering of text sample contents: the modifier fragments don't contain timing attributes (because they apply to text strings which already have them, then why repeat?). Sample descriptions (which may apply to more than one text sample) don't have them either. Currently the draft allows to place these modifier fragments and sample descriptions anywhere and as often as needed. This is useful, for example, to specially protect some parts of the text sample or to send in advance the modifiers of a very long piece of text. For live streaming this might not be the best method as the timing is tight but for streaming it is a valid option. Problems with that? Note that IDs (SIDX) are used to match fragments without timing attributes to their text samples. See also Section 4.1 - resilient transport: of course apart from repeating the fragments in different packets as above you may also repeat the packets themselves, protect them using FEC or retransmit them. The first two shall be more apppropriate for streaming scenarios where a pre-determined packetisation exists previous to transmission. See sections 4.1 and 5. The implementer SHALL ensure that the different pieces meet the timing requirements when they are spread over several packets. - TYPE=3: the draft explictly prohibits combining text strings and modifiers in a fragment. The reason is simplicity: since text strings shall be capable of being displayed individually it would be necessary to introduce a field in the header that explicitly says where the first byte of modifiers is. This is avoided by forcing the first modifiers fragment to be indicated by means of a dedicated header type, TYPE=3. See section 4.2. Comments? - In-band vs. out-of-band: the draft currently specifies two possibilities to transport sample descriptions: in-band and out-of-band. While out-of-band is mandatory, the same does not apply to in-band. However how about making the two mandatory? (i.e. header TYPE=5). At first we thought of in-band just for live streaming of text. But it also makes sense for pre-packaged content. Both mandatory? - Payload header design (section 4.2): the draft specifies an AU-like payload structure (similar to RFC3640 for compatibility). Currently there are 5 payload header types TYPE 1 : for whole text samples |R|U|L|TYPE|{LEN}|SIDX|SDUR| 5-7 bytes long TYPE 2: for text string fragments |R|U|L|TYPE|{LEN}|SIDX|SLEN|SDUR|TOTL|THIS| 8-10 bytes long TYPE 3&4: for first modifier fragment (TYPE=3) and subsequent fragments. |R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long TYPE 5: for sample descriptions. |R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long One could say that these be reduced to three by making the TOTL/THIS counter refer to the number of fragments of a text string and modifier boxes in a text sample instead of the total of fragments, like this: [NOTE: {} means optional || fixed] TYPE 1 : for whole text samples and fragments |R|U|L|TYPE|{LEN}|SLEN|SIDX|SDUR|TOTL|THIS| 8-10 bytes long TYPE 2: for ALL modifier fragments |R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long TYPE 3: for sample descriptions. |R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long The benefit, if any, is that the number of headers is reduced . Some disadvantages are: an increase in the average header size (assuming that fragmentation is rare), a more complex use of TOTL/THIS and of the SLEN/LEN fields. Another disadvantage is that it should be more costly for RFC 3640 to identify the AUs because TOTL/THIS is in the "AU-data contents" part. So, at the moment we don't see a clear motivation to change to this header configuration. Comments? Thanks for your comments, ------------------------------- Jose Rey Mobile Multimedia Team Panasonic European Labs GmbH D-63225 Langen, Germany Tel.:+49-6103-766-134 Fax :+49-6103-766-166 Email: rey@panasonic.de Visit: www.pel.panasonic.de ------------------------------- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 26 02:30:41 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id CAA24832 for ; Thu, 26 Feb 2004 02:30:41 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwFyE-0001p4-VQ for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 02:30:13 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1Q7UA70007000 for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 02:30:10 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwFy6-0001hR-Cp; Thu, 26 Feb 2004 02:30:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwFxQ-0001Pi-6I for avt@optimus.ietf.org; Thu, 26 Feb 2004 02:29:20 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id CAA24760 for ; Thu, 26 Feb 2004 02:29:17 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AwFxM-00026f-00 for avt@ietf.org; Thu, 26 Feb 2004 02:29:16 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AwFwT-00022l-00 for avt@ietf.org; Thu, 26 Feb 2004 02:28:22 -0500 Received: from mail-out4.apple.com ([17.254.13.23]) by ietf-mx with esmtp (Exim 4.12) id 1AwFvd-0001sJ-00 for avt@ietf.org; Thu, 26 Feb 2004 02:27:29 -0500 Received: from mailgate2.apple.com (a17-128-100-204.apple.com [17.128.100.204]) by mail-out4.apple.com (8.12.11/8.12.11) with ESMTP id i1Q7S5ap020845 for ; Wed, 25 Feb 2004 23:28:05 -0800 (PST) Received: from relay3.apple.com (relay3.apple.com) by mailgate2.apple.com (Content Technologies SMTPRS 4.3.6) with ESMTP id ; Wed, 25 Feb 2004 23:26:59 -0800 Received: from [10.10.16.221] ([17.66.41.147]) by relay3.apple.com (8.12.11/8.12.11) with ESMTP id i1Q7Qo7S013576; Thu, 26 Feb 2004 07:26:52 GMT Mime-Version: 1.0 X-Sender: singer@mail.apple.com (Unverified) Message-Id: In-Reply-To: <200402252210.i1PMA8rb006029@smtp.eweka.nl> References: <200402252210.i1PMA8rb006029@smtp.eweka.nl> Date: Thu, 26 Feb 2004 08:25:16 +0100 To: Arnoud van Wijk , "'Jose Rey'" , avt@ietf.org From: Dave Singer Subject: RE: [AVT] Issues in Timed Text draft Cc: "'Jan van der Meer'" , "'Rolf Hakenberg'" , "'Magnus Westerlund'" , "'Per Frojdh'" Content-Type: text/plain; charset="us-ascii" ; format="flowed" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , At 11:00 PM +0100 2/25/04, Arnoud van Wijk wrote: >Umm this timed text, what is it for exactly? >Text telephony? >Or? It's used for captioning, karaoke, titling etc., that is displayed text that is timed to go with other media (such as video). There is provision for simple scrolling, highlighting, etc. > >Thanks > >Drs. Arnoud A. T. van Wijk >Viataal >Research & Development >Afdeling RDS >Theerestraat 42 >5271 GD Sint-Michielsgestel >The Netherlands. >Mobile: +31651921948 >International text telephone: +31735588408 > > >-----Original Message----- >From: avt-admin@ietf.org [mailto:avt-admin@ietf.org] On Behalf Of Jose Rey >Sent: woensdag 25 februari 2004 15:07 >To: avt@ietf.org >Cc: Jan van der Meer; Dave Singer; Rolf Hakenberg; Magnus Westerlund; Per >Frojdh >Subject: [AVT] Issues in Timed Text draft > > >Hi all, > >these are the issues on which I would like to get some feedback >during/before the meeting: > >- design rationale: a text sample consists typically of a text string >followed by some modifiers (decoration). Associated to a text sample there >may be several (or none) sample descriptions. The draft defines headers to >convey both whole text samples and fragments thereof (note that >fragmentation should be rare). The draft allows only text string fragments >to be displayed individually. This meaning that if you receive a single text >string fragment out of three you may use/display it. Unlike the case where >you don't receive some fragment(s) of the decoration: in this case you >SHOULD not use it/them, because it is not required that decoration be >splitted at meaningful boundaries (this was in the -01 draft and thought too >complex for the rare cases of fragmentation). See also section 4.1 in draft. >Comments? > >- ordering of text sample contents: the modifier fragments don't contain >timing attributes (because they apply to text strings which already have >them, then why repeat?). Sample descriptions (which may apply to more than >one text sample) don't have them either. Currently the draft allows to >place these modifier fragments and sample descriptions anywhere and as often >as needed. This is useful, for example, to specially protect some parts of >the text sample or to send in advance the modifiers of a very long piece of >text. For live streaming this might not be the best method as the timing is >tight but for streaming it is a valid option. Problems with that? >Note that IDs (SIDX) are used to match fragments without timing attributes >to their text samples. See also Section 4.1 > >- resilient transport: of course apart from repeating the fragments in >different packets as above you may also repeat the packets themselves, >protect them using FEC or retransmit them. The first two shall be more >apppropriate for streaming scenarios where a pre-determined packetisation >exists previous to transmission. See sections 4.1 and 5. The implementer >SHALL ensure that the different pieces meet the timing requirements when >they are spread over several packets. > >- TYPE=3: the draft explictly prohibits combining text strings and modifiers >in a fragment. The reason is simplicity: since text strings shall be >capable of being displayed individually it would be necessary to introduce a >field in the header that explicitly says where the first byte of modifiers >is. This is avoided by forcing the first modifiers fragment to be indicated >by means of a dedicated header type, TYPE=3. See section 4.2. Comments? > >- In-band vs. out-of-band: the draft currently specifies two possibilities >to transport sample descriptions: in-band and out-of-band. While >out-of-band is mandatory, the same does not apply to in-band. However how >about making the two mandatory? (i.e. header TYPE=5). At first we thought >of in-band just for live streaming of text. But it also makes sense for >pre-packaged content. Both mandatory? > >- Payload header design (section 4.2): the draft specifies an AU-like >payload structure (similar to RFC3640 for compatibility). Currently there >are 5 payload header types > >TYPE 1 : for whole text samples >|R|U|L|TYPE|{LEN}|SIDX|SDUR| 5-7 bytes long > >TYPE 2: for text string fragments > >|R|U|L|TYPE|{LEN}|SIDX|SLEN|SDUR|TOTL|THIS| 8-10 bytes long > >TYPE 3&4: for first modifier fragment (TYPE=3) and subsequent fragments. > >|R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long > >TYPE 5: for sample descriptions. > >|R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long > > >One could say that these be reduced to three by making the TOTL/THIS counter >refer to the number of fragments of a text string and modifier boxes in a >text sample instead of the total of fragments, like this: > >[NOTE: {} means optional || fixed] > >TYPE 1 : for whole text samples and fragments >|R|U|L|TYPE|{LEN}|SLEN|SIDX|SDUR|TOTL|THIS| 8-10 bytes long > >TYPE 2: for ALL modifier fragments > >|R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long > >TYPE 3: for sample descriptions. > >|R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long > >The benefit, if any, is that the number of headers is reduced . Some >disadvantages are: an increase in the average header size (assuming that >fragmentation is rare), a more complex use of TOTL/THIS and of the SLEN/LEN >fields. Another disadvantage is that it should be more costly for RFC 3640 >to identify the AUs because TOTL/THIS is in the "AU-data contents" part. > >So, at the moment we don't see a clear motivation to change to this header >configuration. Comments? > > > >Thanks for your comments, > >------------------------------- >Jose Rey >Mobile Multimedia Team >Panasonic European Labs GmbH >D-63225 Langen, Germany >Tel.:+49-6103-766-134 >Fax :+49-6103-766-166 >Email: rey@panasonic.de >Visit: www.pel.panasonic.de >------------------------------- > > >_______________________________________________ >Audio/Video Transport Working Group >avt@ietf.org >https://www1.ietf.org/mailman/listinfo/avt -- David Singer Apple Computer/QuickTime _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 26 04:28:36 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA00635 for ; Thu, 26 Feb 2004 04:28:36 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwHoO-0004Lr-AG for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 04:28:08 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1Q9S8Fm016723 for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 04:28:08 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwHoH-0004L0-Vg; Thu, 26 Feb 2004 04:28:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwHnj-0004JS-EB for avt@optimus.ietf.org; Thu, 26 Feb 2004 04:27:27 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA00609 for ; Thu, 26 Feb 2004 04:27:24 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AwHng-0006NT-00 for avt@ietf.org; Thu, 26 Feb 2004 04:27:24 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AwHmp-0006Iy-00 for avt@ietf.org; Thu, 26 Feb 2004 04:26:32 -0500 Received: from mail.pel.panasonic.de ([194.162.191.12]) by ietf-mx with esmtp (Exim 4.12) id 1AwHmA-0006E7-00 for avt@ietf.org; Thu, 26 Feb 2004 04:25:50 -0500 Received: from MCOMREYJ ([10.10.100.173]) by mail.pel.panasonic.de with Microsoft SMTPSVC(5.0.2195.6713); Thu, 26 Feb 2004 10:24:19 +0100 From: "Jose Rey" To: Cc: "Arnoud van Wijk" Subject: RE: [AVT] Issues in Timed Text draft Date: Thu, 26 Feb 2004 10:24:40 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 In-Reply-To: Importance: Normal X-OriginalArrivalTime: 26 Feb 2004 09:24:19.0109 (UTC) FILETIME=[4FAE0550:01C3FC4A] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Arnoud, check http://www.ietf.org/internet-drafts/draft-rey-avt-3gpp-timed-text-02.txt and its references for further details. Also, there is a nice introduction section on the usage. Jose > -----Original Message----- > From: Dave Singer [mailto:singer@apple.com] > Sent: Thursday, February 26, 2004 8:25 AM > To: Arnoud van Wijk; 'Jose Rey'; avt@ietf.org > Cc: 'Jan van der Meer'; 'Rolf Hakenberg'; 'Magnus Westerlund'; 'Per > Frojdh' > Subject: RE: [AVT] Issues in Timed Text draft > > > At 11:00 PM +0100 2/25/04, Arnoud van Wijk wrote: > >Umm this timed text, what is it for exactly? > >Text telephony? > >Or? > > It's used for captioning, karaoke, titling etc., that is displayed > text that is timed to go with other media (such as video). There is > provision for simple scrolling, highlighting, etc. > > > > >Thanks > > > >Drs. Arnoud A. T. van Wijk > >Viataal > >Research & Development > >Afdeling RDS > >Theerestraat 42 > >5271 GD Sint-Michielsgestel > >The Netherlands. > >Mobile: +31651921948 > >International text telephone: +31735588408 > > > > > >-----Original Message----- > >From: avt-admin@ietf.org [mailto:avt-admin@ietf.org] On Behalf > Of Jose Rey > >Sent: woensdag 25 februari 2004 15:07 > >To: avt@ietf.org > >Cc: Jan van der Meer; Dave Singer; Rolf Hakenberg; Magnus Westerlund; Per > >Frojdh > >Subject: [AVT] Issues in Timed Text draft > > > > > >Hi all, > > > >these are the issues on which I would like to get some feedback > >during/before the meeting: > > > >- design rationale: a text sample consists typically of a text string > >followed by some modifiers (decoration). Associated to a text > sample there > >may be several (or none) sample descriptions. The draft defines > headers to > >convey both whole text samples and fragments thereof (note that > >fragmentation should be rare). The draft allows only text > string fragments > >to be displayed individually. This meaning that if you receive a > single text > >string fragment out of three you may use/display it. Unlike the > case where > >you don't receive some fragment(s) of the decoration: in this case you > >SHOULD not use it/them, because it is not required that decoration be > >splitted at meaningful boundaries (this was in the -01 draft and > thought too > >complex for the rare cases of fragmentation). See also section > 4.1 in draft. > >Comments? > > > >- ordering of text sample contents: the modifier fragments don't contain > >timing attributes (because they apply to text strings which already have > >them, then why repeat?). Sample descriptions (which may apply to > more than > >one text sample) don't have them either. Currently the draft allows to > >place these modifier fragments and sample descriptions anywhere > and as often > >as needed. This is useful, for example, to specially protect > some parts of > >the text sample or to send in advance the modifiers of a very > long piece of > >text. For live streaming this might not be the best method as > the timing is > >tight but for streaming it is a valid option. Problems with that? > >Note that IDs (SIDX) are used to match fragments without timing > attributes > >to their text samples. See also Section 4.1 > > > >- resilient transport: of course apart from repeating the fragments in > >different packets as above you may also repeat the packets themselves, > >protect them using FEC or retransmit them. The first two shall be more > >apppropriate for streaming scenarios where a pre-determined packetisation > >exists previous to transmission. See sections 4.1 and 5. The implementer > >SHALL ensure that the different pieces meet the timing requirements when > >they are spread over several packets. > > > >- TYPE=3: the draft explictly prohibits combining text strings > and modifiers > >in a fragment. The reason is simplicity: since text strings shall be > >capable of being displayed individually it would be necessary to > introduce a > >field in the header that explicitly says where the first byte of > modifiers > >is. This is avoided by forcing the first modifiers fragment to > be indicated > >by means of a dedicated header type, TYPE=3. See section 4.2. Comments? > > > >- In-band vs. out-of-band: the draft currently specifies two > possibilities > >to transport sample descriptions: in-band and out-of-band. While > >out-of-band is mandatory, the same does not apply to in-band. > However how > >about making the two mandatory? (i.e. header TYPE=5). At first > we thought > >of in-band just for live streaming of text. But it also makes sense for > >pre-packaged content. Both mandatory? > > > >- Payload header design (section 4.2): the draft specifies an AU-like > >payload structure (similar to RFC3640 for compatibility). > Currently there > >are 5 payload header types > > > >TYPE 1 : for whole text samples > >|R|U|L|TYPE|{LEN}|SIDX|SDUR| 5-7 bytes long > > > >TYPE 2: for text string fragments > > > >|R|U|L|TYPE|{LEN}|SIDX|SLEN|SDUR|TOTL|THIS| 8-10 bytes long > > > >TYPE 3&4: for first modifier fragment (TYPE=3) and subsequent fragments. > > > >|R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long > > > >TYPE 5: for sample descriptions. > > > >|R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long > > > > > >One could say that these be reduced to three by making the > TOTL/THIS counter > >refer to the number of fragments of a text string and modifier boxes in a > >text sample instead of the total of fragments, like this: > > > >[NOTE: {} means optional || fixed] > > > >TYPE 1 : for whole text samples and fragments > >|R|U|L|TYPE|{LEN}|SLEN|SIDX|SDUR|TOTL|THIS| 8-10 bytes long > > > >TYPE 2: for ALL modifier fragments > > > >|R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long > > > >TYPE 3: for sample descriptions. > > > >|R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long > > > >The benefit, if any, is that the number of headers is reduced . Some > >disadvantages are: an increase in the average header size (assuming that > >fragmentation is rare), a more complex use of TOTL/THIS and of > the SLEN/LEN > >fields. Another disadvantage is that it should be more costly > for RFC 3640 > >to identify the AUs because TOTL/THIS is in the "AU-data contents" part. > > > >So, at the moment we don't see a clear motivation to change to > this header > >configuration. Comments? > > > > > > > >Thanks for your comments, > > > >------------------------------- > >Jose Rey > >Mobile Multimedia Team > >Panasonic European Labs GmbH > >D-63225 Langen, Germany > >Tel.:+49-6103-766-134 > >Fax :+49-6103-766-166 > >Email: rey@panasonic.de > >Visit: www.pel.panasonic.de > >------------------------------- > > > > > >_______________________________________________ > >Audio/Video Transport Working Group > >avt@ietf.org > >https://www1.ietf.org/mailman/listinfo/avt > > > -- > David Singer > Apple Computer/QuickTime > _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 26 06:15:35 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA04686 for ; Thu, 26 Feb 2004 06:15:35 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwJTu-0005qz-DT for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 06:15:09 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1QBF6jI022497 for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 06:15:06 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwJTr-0005qB-0U; Thu, 26 Feb 2004 06:15:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwJTG-0005l9-DN for avt@optimus.ietf.org; Thu, 26 Feb 2004 06:14:26 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA04598 for ; Thu, 26 Feb 2004 06:14:22 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AwJTC-0000cQ-00 for avt@ietf.org; Thu, 26 Feb 2004 06:14:22 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AwJSG-0000VZ-00 for avt@ietf.org; Thu, 26 Feb 2004 06:13:25 -0500 Received: from smtp.eweka.nl ([81.171.101.3]) by ietf-mx with esmtp (Exim 4.12) id 1AwJRJ-0000Mz-00 for avt@ietf.org; Thu, 26 Feb 2004 06:12:25 -0500 Received: from solstice (ew-dsl-81-171-14-60.eweka.nl [81.171.14.60]) by smtp.eweka.nl (8.12.9/8.12.9) with ESMTP id i1QBMfrb010142; Thu, 26 Feb 2004 11:22:45 GMT (envelope-from a.vwijk@viataal.nl) Message-Id: <200402261122.i1QBMfrb010142@smtp.eweka.nl> From: "Arnoud van Wijk" To: "'Dave Singer'" , "'Jose Rey'" , Cc: "'Jan van der Meer'" , "'Rolf Hakenberg'" , "'Magnus Westerlund'" , "'Per Frojdh'" Subject: RE: [AVT] Issues in Timed Text draft Date: Thu, 26 Feb 2004 12:12:29 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook, Build 11.0.5510 In-reply-to: X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Thread-index: AcP8OhST15ZBnPb9QXKwxriu5o02rgAHznwA X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.3 required=5.0 tests=AWL,MISSING_OUTLOOK_NAME autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Aaaah I now understand. :-) Well I am very much interested in subtitling. Since I depend on that as a deaf person. Greetz Arnoud Drs. Arnoud A. T. van Wijk Viataal Research & Development Afdeling RDS Theerestraat 42 5271 GD Sint-Michielsgestel The Netherlands. Mobile: +31651921948 International text telephone: +31735588408 -----Original Message----- From: Dave Singer [mailto:singer@apple.com] Sent: donderdag 26 februari 2004 8:25 To: Arnoud van Wijk; 'Jose Rey'; avt@ietf.org Cc: 'Jan van der Meer'; 'Rolf Hakenberg'; 'Magnus Westerlund'; 'Per Frojdh' Subject: RE: [AVT] Issues in Timed Text draft At 11:00 PM +0100 2/25/04, Arnoud van Wijk wrote: >Umm this timed text, what is it for exactly? >Text telephony? >Or? It's used for captioning, karaoke, titling etc., that is displayed text that is timed to go with other media (such as video). There is provision for simple scrolling, highlighting, etc. > >Thanks > >Drs. Arnoud A. T. van Wijk >Viataal >Research & Development >Afdeling RDS >Theerestraat 42 >5271 GD Sint-Michielsgestel >The Netherlands. >Mobile: +31651921948 >International text telephone: +31735588408 > > >-----Original Message----- >From: avt-admin@ietf.org [mailto:avt-admin@ietf.org] On Behalf Of Jose Rey >Sent: woensdag 25 februari 2004 15:07 >To: avt@ietf.org >Cc: Jan van der Meer; Dave Singer; Rolf Hakenberg; Magnus Westerlund; Per >Frojdh >Subject: [AVT] Issues in Timed Text draft > > >Hi all, > >these are the issues on which I would like to get some feedback >during/before the meeting: > >- design rationale: a text sample consists typically of a text string >followed by some modifiers (decoration). Associated to a text sample there >may be several (or none) sample descriptions. The draft defines headers to >convey both whole text samples and fragments thereof (note that >fragmentation should be rare). The draft allows only text string fragments >to be displayed individually. This meaning that if you receive a single text >string fragment out of three you may use/display it. Unlike the case where >you don't receive some fragment(s) of the decoration: in this case you >SHOULD not use it/them, because it is not required that decoration be >splitted at meaningful boundaries (this was in the -01 draft and thought too >complex for the rare cases of fragmentation). See also section 4.1 in draft. >Comments? > >- ordering of text sample contents: the modifier fragments don't contain >timing attributes (because they apply to text strings which already have >them, then why repeat?). Sample descriptions (which may apply to more than >one text sample) don't have them either. Currently the draft allows to >place these modifier fragments and sample descriptions anywhere and as often >as needed. This is useful, for example, to specially protect some parts of >the text sample or to send in advance the modifiers of a very long piece of >text. For live streaming this might not be the best method as the timing is >tight but for streaming it is a valid option. Problems with that? >Note that IDs (SIDX) are used to match fragments without timing attributes >to their text samples. See also Section 4.1 > >- resilient transport: of course apart from repeating the fragments in >different packets as above you may also repeat the packets themselves, >protect them using FEC or retransmit them. The first two shall be more >apppropriate for streaming scenarios where a pre-determined packetisation >exists previous to transmission. See sections 4.1 and 5. The implementer >SHALL ensure that the different pieces meet the timing requirements when >they are spread over several packets. > >- TYPE=3: the draft explictly prohibits combining text strings and modifiers >in a fragment. The reason is simplicity: since text strings shall be >capable of being displayed individually it would be necessary to introduce a >field in the header that explicitly says where the first byte of modifiers >is. This is avoided by forcing the first modifiers fragment to be indicated >by means of a dedicated header type, TYPE=3. See section 4.2. Comments? > >- In-band vs. out-of-band: the draft currently specifies two possibilities >to transport sample descriptions: in-band and out-of-band. While >out-of-band is mandatory, the same does not apply to in-band. However how >about making the two mandatory? (i.e. header TYPE=5). At first we thought >of in-band just for live streaming of text. But it also makes sense for >pre-packaged content. Both mandatory? > >- Payload header design (section 4.2): the draft specifies an AU-like >payload structure (similar to RFC3640 for compatibility). Currently there >are 5 payload header types > >TYPE 1 : for whole text samples >|R|U|L|TYPE|{LEN}|SIDX|SDUR| 5-7 bytes long > >TYPE 2: for text string fragments > >|R|U|L|TYPE|{LEN}|SIDX|SLEN|SDUR|TOTL|THIS| 8-10 bytes long > >TYPE 3&4: for first modifier fragment (TYPE=3) and subsequent fragments. > >|R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long > >TYPE 5: for sample descriptions. > >|R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long > > >One could say that these be reduced to three by making the TOTL/THIS counter >refer to the number of fragments of a text string and modifier boxes in a >text sample instead of the total of fragments, like this: > >[NOTE: {} means optional || fixed] > >TYPE 1 : for whole text samples and fragments >|R|U|L|TYPE|{LEN}|SLEN|SIDX|SDUR|TOTL|THIS| 8-10 bytes long > >TYPE 2: for ALL modifier fragments > >|R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long > >TYPE 3: for sample descriptions. > >|R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long > >The benefit, if any, is that the number of headers is reduced . Some >disadvantages are: an increase in the average header size (assuming that >fragmentation is rare), a more complex use of TOTL/THIS and of the SLEN/LEN >fields. Another disadvantage is that it should be more costly for RFC 3640 >to identify the AUs because TOTL/THIS is in the "AU-data contents" part. > >So, at the moment we don't see a clear motivation to change to this header >configuration. Comments? > > > >Thanks for your comments, > >------------------------------- >Jose Rey >Mobile Multimedia Team >Panasonic European Labs GmbH >D-63225 Langen, Germany >Tel.:+49-6103-766-134 >Fax :+49-6103-766-166 >Email: rey@panasonic.de >Visit: www.pel.panasonic.de >------------------------------- > > >_______________________________________________ >Audio/Video Transport Working Group >avt@ietf.org >https://www1.ietf.org/mailman/listinfo/avt -- David Singer Apple Computer/QuickTime _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 26 10:16:46 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA18941 for ; Thu, 26 Feb 2004 10:16:46 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwNFH-0002Vx-LC for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 10:16:20 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1QFGFJ8009661 for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 10:16:15 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwNF4-0002Ro-PD; Thu, 26 Feb 2004 10:16:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwNEg-0002KZ-NC for avt@optimus.ietf.org; Thu, 26 Feb 2004 10:15:39 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA18806 for ; Thu, 26 Feb 2004 10:15:34 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AwNEe-00054l-00 for avt@ietf.org; Thu, 26 Feb 2004 10:15:36 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AwNDn-0004yU-00 for avt@ietf.org; Thu, 26 Feb 2004 10:14:44 -0500 Received: from foxtrot.nab.org ([209.116.240.194]) by ietf-mx with esmtp (Exim 4.12) id 1AwND1-0004po-00 for avt@ietf.org; Thu, 26 Feb 2004 10:13:55 -0500 Received: from mail.nab.org by [209.116.240.194] via smtpd (for ietf-mx.ietf.org [132.151.6.1]) with ESMTP; Thu, 26 Feb 2004 10:13:55 -0500 Received: (private information removed) Message-ID: <5A659834E1607E4EBD72FCE2FE5C9CF102FEBF39@mail.NAB.ORG> From: "Allison, Art" To: "'Gunnar Hellstrom'" , Arnoud van Wijk , "'Jose Rey'" , avt@ietf.org Cc: "'Jan van der Meer'" , "'Dave Singer'" , "'Rolf Hakenberg'" , "'Magnus Westerlund'" , "'Per Frojdh'" Subject: RE: [AVT] Issues in Timed Text draft Date: Thu, 26 Feb 2004 10:13:54 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="iso-8859-1" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , The short from response below says 'part of video it belongs to'. It seems to me that text can be for audio-only services as well. Would you agree? In considering your response, it might be helpful to recognize the differences from the 'classical' approaches that were driven by the old technology and the tools/approaches available with digital. We don't need to embed text in video any longer as tools to directly link to the program time line exist. Generally, it seems to me that descriptive text either provides: 1. replacement audio for the hearing impaired, (alternative language text is logically the same, as the listener does not understand due to inability to understand the language in the audio). or 2. Additional information related to the program. So is it clear to those more deeply involved that the timing is related to program presentation time (not video or audio per se)? Art ::{)> Art Allison Director Advanced Engineering NAB 1771 N St NW Washington DC 20036 202 429 5418 -----Original Message----- From: Gunnar Hellstrom [mailto:gunnar.hellstrom@omnitor.se] Sent: Wednesday, February 25, 2004 5:22 PM To: Arnoud van Wijk; 'Jose Rey'; avt@ietf.org Cc: 'Jan van der Meer'; 'Dave Singer'; 'Rolf Hakenberg'; 'Magnus Westerlund'; 'Per Frojdh' Subject: RE: [AVT] Issues in Timed Text draft Subtitling in stored media. That is why it is timed. Timed to the part of video it belongs to. Gunnar. ------------------------------------------- Gunnar Hellstrom Omnitor AB Renathvagen 2 SE 121 37 Johanneshov SWEDEN +46 8 556 002 03 Mob: +46 708 204 288 www.omnitor.se Gunnar.Hellstrom@Omnitor.se -------------------------------------------- -----Original Message----- From: avt-admin@ietf.org [mailto:avt-admin@ietf.org]On Behalf Of Arnoud van Wijk Sent: Wednesday, February 25, 2004 11:00 PM To: 'Jose Rey'; avt@ietf.org Cc: 'Jan van der Meer'; 'Dave Singer'; 'Rolf Hakenberg'; 'Magnus Westerlund'; 'Per Frojdh' Subject: RE: [AVT] Issues in Timed Text draft Umm this timed text, what is it for exactly? Text telephony? Or? Thanks Drs. Arnoud A. T. van Wijk Viataal Research & Development Afdeling RDS Theerestraat 42 5271 GD Sint-Michielsgestel The Netherlands. Mobile: +31651921948 International text telephone: +31735588408 -----Original Message----- From: avt-admin@ietf.org [mailto:avt-admin@ietf.org] On Behalf Of Jose Rey Sent: woensdag 25 februari 2004 15:07 To: avt@ietf.org Cc: Jan van der Meer; Dave Singer; Rolf Hakenberg; Magnus Westerlund; Per Frojdh Subject: [AVT] Issues in Timed Text draft Hi all, these are the issues on which I would like to get some feedback during/before the meeting: - design rationale: a text sample consists typically of a text string followed by some modifiers (decoration). Associated to a text sample there may be several (or none) sample descriptions. The draft defines headers to convey both whole text samples and fragments thereof (note that fragmentation should be rare). The draft allows only text string fragments to be displayed individually. This meaning that if you receive a single text string fragment out of three you may use/display it. Unlike the case where you don't receive some fragment(s) of the decoration: in this case you SHOULD not use it/them, because it is not required that decoration be splitted at meaningful boundaries (this was in the -01 draft and thought too complex for the rare cases of fragmentation). See also section 4.1 in draft. Comments? - ordering of text sample contents: the modifier fragments don't contain timing attributes (because they apply to text strings which already have them, then why repeat?). Sample descriptions (which may apply to more than one text sample) don't have them either. Currently the draft allows to place these modifier fragments and sample descriptions anywhere and as often as needed. This is useful, for example, to specially protect some parts of the text sample or to send in advance the modifiers of a very long piece of text. For live streaming this might not be the best method as the timing is tight but for streaming it is a valid option. Problems with that? Note that IDs (SIDX) are used to match fragments without timing attributes to their text samples. See also Section 4.1 - resilient transport: of course apart from repeating the fragments in different packets as above you may also repeat the packets themselves, protect them using FEC or retransmit them. The first two shall be more apppropriate for streaming scenarios where a pre-determined packetisation exists previous to transmission. See sections 4.1 and 5. The implementer SHALL ensure that the different pieces meet the timing requirements when they are spread over several packets. - TYPE=3: the draft explictly prohibits combining text strings and modifiers in a fragment. The reason is simplicity: since text strings shall be capable of being displayed individually it would be necessary to introduce a field in the header that explicitly says where the first byte of modifiers is. This is avoided by forcing the first modifiers fragment to be indicated by means of a dedicated header type, TYPE=3. See section 4.2. Comments? - In-band vs. out-of-band: the draft currently specifies two possibilities to transport sample descriptions: in-band and out-of-band. While out-of-band is mandatory, the same does not apply to in-band. However how about making the two mandatory? (i.e. header TYPE=5). At first we thought of in-band just for live streaming of text. But it also makes sense for pre-packaged content. Both mandatory? - Payload header design (section 4.2): the draft specifies an AU-like payload structure (similar to RFC3640 for compatibility). Currently there are 5 payload header types TYPE 1 : for whole text samples |R|U|L|TYPE|{LEN}|SIDX|SDUR| 5-7 bytes long TYPE 2: for text string fragments |R|U|L|TYPE|{LEN}|SIDX|SLEN|SDUR|TOTL|THIS| 8-10 bytes long TYPE 3&4: for first modifier fragment (TYPE=3) and subsequent fragments. |R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long TYPE 5: for sample descriptions. |R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long One could say that these be reduced to three by making the TOTL/THIS counter refer to the number of fragments of a text string and modifier boxes in a text sample instead of the total of fragments, like this: [NOTE: {} means optional || fixed] TYPE 1 : for whole text samples and fragments |R|U|L|TYPE|{LEN}|SLEN|SIDX|SDUR|TOTL|THIS| 8-10 bytes long TYPE 2: for ALL modifier fragments |R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long TYPE 3: for sample descriptions. |R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long The benefit, if any, is that the number of headers is reduced . Some disadvantages are: an increase in the average header size (assuming that fragmentation is rare), a more complex use of TOTL/THIS and of the SLEN/LEN fields. Another disadvantage is that it should be more costly for RFC 3640 to identify the AUs because TOTL/THIS is in the "AU-data contents" part. So, at the moment we don't see a clear motivation to change to this header configuration. Comments? Thanks for your comments, ------------------------------- Jose Rey Mobile Multimedia Team Panasonic European Labs GmbH D-63225 Langen, Germany Tel.:+49-6103-766-134 Fax :+49-6103-766-166 Email: rey@panasonic.de Visit: www.pel.panasonic.de ------------------------------- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 26 10:26:29 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA19540 for ; Thu, 26 Feb 2004 10:26:29 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwNOl-00053b-4T for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 10:26:03 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1QFQ3YH019433 for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 10:26:03 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwNOj-000538-WB; Thu, 26 Feb 2004 10:26:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwNON-000522-48 for avt@optimus.ietf.org; Thu, 26 Feb 2004 10:25:39 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA19518 for ; Thu, 26 Feb 2004 10:25:35 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AwNOK-00064T-00 for avt@ietf.org; Thu, 26 Feb 2004 10:25:36 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AwNNP-0005zD-00 for avt@ietf.org; Thu, 26 Feb 2004 10:24:39 -0500 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47]) by ietf-mx with esmtp (Exim 4.12) id 1AwNMU-0005uG-00 for avt@ietf.org; Thu, 26 Feb 2004 10:23:42 -0500 Received: from esealmw143.al.sw.ericsson.se ([153.88.254.118]) by penguin-ext.wise.edt.ericsson.se (8.12.10/8.12.10/WIREfire-1.8b) with ESMTP id i1QFNfYG002997 for ; Thu, 26 Feb 2004 16:23:41 +0100 (MET) Received: from esealnt613.al.sw.ericsson.se ([153.88.254.125]) by esealmw143.al.sw.ericsson.se with Microsoft SMTPSVC(6.0.3790.0); Thu, 26 Feb 2004 16:23:41 +0100 Received: from ericsson.com (research-1fd0e1.ki.sw.ericsson.se [147.214.34.102]) by esealnt613.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2657.72) id FSMBZWSH; Thu, 26 Feb 2004 16:23:41 +0100 Message-ID: <403E0EDB.3080303@ericsson.com> Date: Thu, 26 Feb 2004 16:20:59 +0100 X-Sybari-Trust: c209b139 c77f3eb6 c891ec11 00000138 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: sv, en-us, en MIME-Version: 1.0 To: IETF AVT WG Content-Type: multipart/mixed; boundary="------------000605020708090809070803" X-OriginalArrivalTime: 26 Feb 2004 15:23:41.0232 (UTC) FILETIME=[83B4E300:01C3FC7C] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60 Subject: [AVT] Updated AVT agenda Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. --------------000605020708090809070803 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Hi, Attached is an updated AVT agenda. Mostly smaller corrections to draft names, and numbers. If someone still has comments, please send them to use chairs. Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. --------------000605020708090809070803 Content-Type: text/plain; name="ietf-59-AVT-agenda.txt" Content-Disposition: inline; filename="ietf-59-AVT-agenda.txt" Content-Transfer-Encoding: 7bit Audio/Video Transport Working Group CHAIRS: Colin Perkins Magnus Westerlund Tuseday, 2nd March 2004 at 09:00-11:30 ===================================== Introduction, and Status Update (Chairs) 20 In publishing process: draft-ietf-avt-mpeg4-simple-08.txt [RFF 3640] draft-ietf-avt-rtcp-report-extns-06.txt [RFC 3611] draft-ietf-srtp-09.txt [AUTH 48] draft-ietf-avt-rtcp-feedback-08.txt [IESG Evaluation] draft-burmeister-avt-rtcp-feedback-sim-05.txt [IESG Evaluation] draft-ietf-avt-rtp-clearmode-04.txt [IESG Evaluation] draft-ietf-avt-ilbc-codec-04 (Experimental) [IESG Evaluation] draft-ietf-avt-rtp-ilbc-04 (Experimental) [IESG Evaluation] draft-jones-avt-audio-t38-03.txt [IESG Evaluation] draft-ietf-avt-tcrtp-07.txt [IETF LC] draft-ietf-avt-rtp-retransmission-10.txt [AD Evaluation] draft-ietf-avt-uncomp-video-06 [AD Evaluation] WG Documents: draft-ietf-avt-ulp-09.txt draft-ietf-avt-uxp-06.txt draft-ietf-avt-rfc2833bis-04.txt draft-ietf-avt-mpeg1and2-mod-00.txt draft-ietf-avt-rtp-dsr-codecs-00.txt draft-ietf-avt-profile-savpf-00.txt draft-ietf-avt-rfc3119bis-02.txt draft-ietf-avt-rtp-h264-04.txt draft-ietf-avt-rtp-jpeg2000-04.txt Individual contributions: draft-kerr-avt-vorbis-rtp-03.txt draft-herlein-speex-rtp-profile-01 (expired) draft-ramalho-rgl-rtpformat-02.txt (expired) draft-chen-rtp-bv-02.txt draft-ahmadi-avt-rtp-vmr-wb-00.txt draft-ash-avt-ecrtp-over-mpls-protocol-00.txt draft-clark-avt-rtpmibv2-00.txt draft-finlayson-avt-mpa-robust-interoperability-00.txt draft-perkins-avt-rtp-reactive-fec-00.txt draft-tseng-avt-rtcp-streaming-extens-00.txt Advance RTP and AVP to Full Standard Updates on behalf of author (Chairs) 5 draft-ietf-avt-midi-rtp-01.txt draft-ietf-avt-midi-guidelines-01.txt draft-ietf-avt-rtp-framing-contrans-00.txt Requirements for transport of video control commands (draft-basso-avt-videoconreq-00.txt) RTP payload format for AMR-WB+ audio codec (Lakaniemi) 15 draft-sjoberg-avt-rtp-amrwbplus-01.txt Introduction of ATRAC family payload format. (Romaine) 15 draft-hatanaka-avt-rtp-atrac-family-00.txt 3GPP Timed Text (Rey) 15 draft-rey-avt-3gpp-timed-text-02.txt Payload format for text conversation (RFC2793bis) (Hellstrom) 15 draft-ietf-avt-rfc2793bis-02.txt (main document) draft-ietf-avt-text-red-01.txt draft-ietf-mmusic-sdp-new-15.txt draft-sinnreich-sipdev-req-03.txt H.261 and H.263 payload parameters (Even) 15 draft-ietf-avt-rfc2032-bis-00.txt draft-ietf-avt-rfc2429-bis-00.txt Wednesday, 3rd March 2004 at 15:30-17:30 ===================================== Chairs Introduction 5 RTCP Extensions for SSM Sessions with Unicast Feedback (Ott) 15 draft-ietf-avt-rtcpssm-06.txt Requirements for ECRTP over MPLS (Ash) 15 draft-ash-avt-ecrtp-over-mpls-reqs-01.txt Verifying the media path using RTP No-Op & Preconditions (Andreasen) 20 draft-wing-avt-rtp-noop-00.txt draft-andreasen-mmusic-connectivityprecondition-00.txt RTP Profile for TCP Friendly Rate Control (Gharai) 30 draft-gharai-avt-tfrc-profile-00.txt --------------000605020708090809070803-- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 26 17:31:43 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA13856 for ; Thu, 26 Feb 2004 17:31:43 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwU2C-0002lk-CD for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 17:31:17 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1QMVCL9010640 for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 17:31:12 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwU22-0002f2-DN; Thu, 26 Feb 2004 17:31:02 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwU1p-0002dT-Pp for avt@optimus.ietf.org; Thu, 26 Feb 2004 17:30:50 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA13803 for ; Thu, 26 Feb 2004 17:30:45 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AwU1n-0007CF-00 for avt@ietf.org; Thu, 26 Feb 2004 17:30:47 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AwU0p-00073W-00 for avt@ietf.org; Thu, 26 Feb 2004 17:29:48 -0500 Received: from mail-out3.apple.com ([17.254.13.22]) by ietf-mx with esmtp (Exim 4.12) id 1AwTzr-0006nb-00 for avt@ietf.org; Thu, 26 Feb 2004 17:28:47 -0500 Received: from mailgate1.apple.com (a17-128-100-225.apple.com [17.128.100.225]) by mail-out3.apple.com (8.12.11/8.12.11) with ESMTP id i1QMSHr0001584 for ; Thu, 26 Feb 2004 14:28:17 -0800 (PST) Received: from relay3.apple.com (relay3.apple.com) by mailgate1.apple.com (Content Technologies SMTPRS 4.3.6) with ESMTP id ; Thu, 26 Feb 2004 14:28:17 -0800 Received: from [10.10.16.221] ([17.66.41.38]) by relay3.apple.com (8.12.11/8.12.11) with ESMTP id i1QMS7Ah002321; Thu, 26 Feb 2004 22:28:09 GMT Mime-Version: 1.0 X-Sender: singer@mail.apple.com (Unverified) Message-Id: In-Reply-To: <5A659834E1607E4EBD72FCE2FE5C9CF102FEBF39@mail.NAB.ORG> References: <5A659834E1607E4EBD72FCE2FE5C9CF102FEBF39@mail.NAB.ORG> Date: Thu, 26 Feb 2004 23:27:05 +0100 To: "Allison, Art" , "'Gunnar Hellstrom'" , Arnoud van Wijk , "'Jose Rey'" , avt@ietf.org From: Dave Singer Subject: RE: [AVT] Issues in Timed Text draft Cc: "'Jan van der Meer'" , "'Rolf Hakenberg'" , "'Magnus Westerlund'" , "'Per Frojdh'" Content-Type: text/plain; charset="us-ascii" ; format="flowed" X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , yes, that's true, it's technically possible to have timed text with audio and no video, as you say. At 10:13 AM -0500 2/26/04, Allison, Art wrote: >The short from response below says 'part of video it belongs to'. >It seems to me that text can be for audio-only services as well. Would you >agree? > >In considering your response, it might be helpful to recognize the >differences from the 'classical' approaches that were driven by the old >technology and the tools/approaches available with digital. We don't need >to embed text in video any longer as tools to directly link to the program >time line exist. > >Generally, it seems to me that descriptive text either provides: >1. replacement audio for the hearing impaired, (alternative language text is >logically the same, as the listener does not understand due to inability to >understand the language in the audio). >or >2. Additional information related to the program. > >So is it clear to those more deeply involved that the timing is related to >program presentation time (not video or audio per se)? > >Art >::{)> >Art Allison >Director Advanced Engineering >NAB >1771 N St NW >Washington DC 20036 >202 429 5418 > > >-----Original Message----- >From: Gunnar Hellstrom [mailto:gunnar.hellstrom@omnitor.se] >Sent: Wednesday, February 25, 2004 5:22 PM >To: Arnoud van Wijk; 'Jose Rey'; avt@ietf.org >Cc: 'Jan van der Meer'; 'Dave Singer'; 'Rolf Hakenberg'; 'Magnus >Westerlund'; 'Per Frojdh' >Subject: RE: [AVT] Issues in Timed Text draft > > >Subtitling in stored media. >That is why it is timed. Timed to the part of video it belongs to. > >Gunnar. > >------------------------------------------- >Gunnar Hellstrom >Omnitor AB >Renathvagen 2 >SE 121 37 Johanneshov >SWEDEN >+46 8 556 002 03 >Mob: +46 708 204 288 >www.omnitor.se >Gunnar.Hellstrom@Omnitor.se >-------------------------------------------- > > >-----Original Message----- >From: avt-admin@ietf.org [mailto:avt-admin@ietf.org]On Behalf Of Arnoud >van Wijk >Sent: Wednesday, February 25, 2004 11:00 PM >To: 'Jose Rey'; avt@ietf.org >Cc: 'Jan van der Meer'; 'Dave Singer'; 'Rolf Hakenberg'; 'Magnus >Westerlund'; 'Per Frojdh' >Subject: RE: [AVT] Issues in Timed Text draft > > >Umm this timed text, what is it for exactly? >Text telephony? >Or? > >Thanks > >Drs. Arnoud A. T. van Wijk >Viataal >Research & Development >Afdeling RDS >Theerestraat 42 >5271 GD Sint-Michielsgestel >The Netherlands. >Mobile: +31651921948 >International text telephone: +31735588408 > > >-----Original Message----- >From: avt-admin@ietf.org [mailto:avt-admin@ietf.org] On Behalf Of Jose Rey >Sent: woensdag 25 februari 2004 15:07 >To: avt@ietf.org >Cc: Jan van der Meer; Dave Singer; Rolf Hakenberg; Magnus Westerlund; Per >Frojdh >Subject: [AVT] Issues in Timed Text draft > > >Hi all, > >these are the issues on which I would like to get some feedback >during/before the meeting: > >- design rationale: a text sample consists typically of a text string >followed by some modifiers (decoration). Associated to a text sample there >may be several (or none) sample descriptions. The draft defines headers to >convey both whole text samples and fragments thereof (note that >fragmentation should be rare). The draft allows only text string fragments >to be displayed individually. This meaning that if you receive a single text >string fragment out of three you may use/display it. Unlike the case where >you don't receive some fragment(s) of the decoration: in this case you >SHOULD not use it/them, because it is not required that decoration be >splitted at meaningful boundaries (this was in the -01 draft and thought too >complex for the rare cases of fragmentation). See also section 4.1 in draft. >Comments? > >- ordering of text sample contents: the modifier fragments don't contain >timing attributes (because they apply to text strings which already have >them, then why repeat?). Sample descriptions (which may apply to more than >one text sample) don't have them either. Currently the draft allows to >place these modifier fragments and sample descriptions anywhere and as often >as needed. This is useful, for example, to specially protect some parts of >the text sample or to send in advance the modifiers of a very long piece of >text. For live streaming this might not be the best method as the timing is >tight but for streaming it is a valid option. Problems with that? >Note that IDs (SIDX) are used to match fragments without timing attributes >to their text samples. See also Section 4.1 > >- resilient transport: of course apart from repeating the fragments in >different packets as above you may also repeat the packets themselves, >protect them using FEC or retransmit them. The first two shall be more >apppropriate for streaming scenarios where a pre-determined packetisation >exists previous to transmission. See sections 4.1 and 5. The implementer >SHALL ensure that the different pieces meet the timing requirements when >they are spread over several packets. > >- TYPE=3: the draft explictly prohibits combining text strings and modifiers >in a fragment. The reason is simplicity: since text strings shall be >capable of being displayed individually it would be necessary to introduce a >field in the header that explicitly says where the first byte of modifiers >is. This is avoided by forcing the first modifiers fragment to be indicated >by means of a dedicated header type, TYPE=3. See section 4.2. Comments? > >- In-band vs. out-of-band: the draft currently specifies two possibilities >to transport sample descriptions: in-band and out-of-band. While >out-of-band is mandatory, the same does not apply to in-band. However how >about making the two mandatory? (i.e. header TYPE=5). At first we thought >of in-band just for live streaming of text. But it also makes sense for >pre-packaged content. Both mandatory? > >- Payload header design (section 4.2): the draft specifies an AU-like >payload structure (similar to RFC3640 for compatibility). Currently there >are 5 payload header types > >TYPE 1 : for whole text samples >|R|U|L|TYPE|{LEN}|SIDX|SDUR| 5-7 bytes long > >TYPE 2: for text string fragments > >|R|U|L|TYPE|{LEN}|SIDX|SLEN|SDUR|TOTL|THIS| 8-10 bytes long > >TYPE 3&4: for first modifier fragment (TYPE=3) and subsequent fragments. > >|R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long > >TYPE 5: for sample descriptions. > >|R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long > > >One could say that these be reduced to three by making the TOTL/THIS counter >refer to the number of fragments of a text string and modifier boxes in a >text sample instead of the total of fragments, like this: > >[NOTE: {} means optional || fixed] > >TYPE 1 : for whole text samples and fragments >|R|U|L|TYPE|{LEN}|SLEN|SIDX|SDUR|TOTL|THIS| 8-10 bytes long > >TYPE 2: for ALL modifier fragments > >|R|U|L|TYPE|{LEN}|TOTL|THIS| 2-4 bytes long > >TYPE 3: for sample descriptions. > >|R|U|L|TYPE|{LEN}|SIDX| 2-4 bytes long > >The benefit, if any, is that the number of headers is reduced . Some >disadvantages are: an increase in the average header size (assuming that >fragmentation is rare), a more complex use of TOTL/THIS and of the SLEN/LEN >fields. Another disadvantage is that it should be more costly for RFC 3640 >to identify the AUs because TOTL/THIS is in the "AU-data contents" part. > >So, at the moment we don't see a clear motivation to change to this header >configuration. Comments? > > > >Thanks for your comments, > >------------------------------- >Jose Rey >Mobile Multimedia Team >Panasonic European Labs GmbH >D-63225 Langen, Germany >Tel.:+49-6103-766-134 >Fax :+49-6103-766-166 >Email: rey@panasonic.de >Visit: www.pel.panasonic.de >------------------------------- > > >_______________________________________________ >Audio/Video Transport Working Group >avt@ietf.org >https://www1.ietf.org/mailman/listinfo/avt > > > >_______________________________________________ >Audio/Video Transport Working Group >avt@ietf.org >https://www1.ietf.org/mailman/listinfo/avt > > > > >_______________________________________________ >Audio/Video Transport Working Group >avt@ietf.org >https://www1.ietf.org/mailman/listinfo/avt > >_______________________________________________ >Audio/Video Transport Working Group >avt@ietf.org >https://www1.ietf.org/mailman/listinfo/avt -- David Singer Apple Computer/QuickTime _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Thu Feb 26 20:07:21 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id UAA20100 for ; Thu, 26 Feb 2004 20:07:21 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwWSq-0002CW-VZ for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 20:06:53 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1R16qK4008457 for avt-archive@odin.ietf.org; Thu, 26 Feb 2004 20:06:52 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwWS1-000276-4P; Thu, 26 Feb 2004 20:06:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwWR8-00026K-U4 for avt@optimus.ietf.org; Thu, 26 Feb 2004 20:05:06 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id UAA19975 for ; Thu, 26 Feb 2004 20:05:04 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AwWR6-00065j-00 for avt@ietf.org; Thu, 26 Feb 2004 20:05:05 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AwWQH-0005xO-00 for avt@ietf.org; Thu, 26 Feb 2004 20:04:14 -0500 Received: from pr-66-150-46-254.wgate.com ([66.150.46.254] helo=mail.tvol.net) by ietf-mx with esmtp (Exim 4.12) id 1AwWPK-0005ob-00 for avt@ietf.org; Thu, 26 Feb 2004 20:03:15 -0500 Received: from jesup.eng.tvol.net ([10.32.2.26]) by mail.tvol.net with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id FQXG8HJL; Thu, 26 Feb 2004 20:03:04 -0500 Reply-to: Randell Jesup To: IETF AVT WG From: Randell Jesup Date: 26 Feb 2004 20:02:26 -0500 In-Reply-To: <4039F405.4000906@ericsson.com> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Subject: [AVT] draft-ietf-avt-rtp-h264-04 and timestamps Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Question about draft-ietf-avt-rtp-h264-04 and timestamp values: The said draft states that avt-rtp-h264 uses a 90KHz timestamp clock. The RTP main spec (3550) says: If RTP packets are generated periodically, the nominal sampling instant as determined from the sampling clock is to be used, not a reading of the system clock. As an example, for fixed-rate audio the timestamp clock would likely increment by one for each sampling period. So, under what circumstances would one use a sampled (derived) timestamp, and under what circumstances would one use an assumed timestamp? For example, for nominally 30FPS video, would one use a timestamp difference of 3000 every time? What if the actual rate turned out to be not 30FPS, but 29.97fps, or 33fps, etc? The receiver could compensate for clock/framerate drift using RTCP SR/RR's or (very) roughly using jitter buffer queue depth, but only after they had them. What about inherently variable-frame-rate encoders? (Though normally will be using input devices that are effectively or close to fixed-rate inputs, with the encoder skipping input frames.) Obviously the h.264 codec doesn't care itself. It seems from the spec a receiver must be willing to handle either fixed (or quantized) offset timestamps, as well as wall-clock-derived timestamps; so the question is more one of which is preferred/recommended at the sender side in which instance? Is there _any_ instance where one would prefer wall-clock-derived timestamps? (Perhaps something that truly captured frames on demand and the encoder ran (and captured/encoded frames) as fast as it could.) What about AV sync before RTCP packets are seen (assuming they're not lost of blocked, etc)? What if they're never seen - fall back into the rough jitter-depth solution? (Of course, in the no-RTCP case you may eventually have problems due to the audio being all assumed timestamps.) FYI, is there a list of changes between -03 and -04 somewhere? I hate doing textual compares in IETF docs.... Thanks. -- Randell Jesup, Worldgate Communications, ex-Scala, ex-Amiga OS team rjesup@wgate.com "The fetters imposed on liberty at home have ever been forged out of the weapons provided for defence against real, pretended, or imaginary dangers from abroad." - James Madison, 4th US president (1751-1836) _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Fri Feb 27 04:25:02 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA21682 for ; Fri, 27 Feb 2004 04:25:02 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AweEQ-0000NH-R7 for avt-archive@odin.ietf.org; Fri, 27 Feb 2004 04:24:34 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1R9OUYN001336 for avt-archive@odin.ietf.org; Fri, 27 Feb 2004 04:24:30 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AweE7-0000Gp-Sj; Fri, 27 Feb 2004 04:24:11 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AwdOp-0005nO-Cm for avt@optimus.ietf.org; Fri, 27 Feb 2004 03:31:11 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA20423 for ; Fri, 27 Feb 2004 03:31:09 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AwdOn-0004aq-00 for avt@ietf.org; Fri, 27 Feb 2004 03:31:09 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AwdNp-0004WX-00 for avt@ietf.org; Fri, 27 Feb 2004 03:30:10 -0500 Received: from ns8.sony.co.jp ([137.153.0.33]) by ietf-mx with esmtp (Exim 4.12) id 1AwdNY-0004Rt-00 for avt@ietf.org; Fri, 27 Feb 2004 03:29:52 -0500 Received: from mail7.sony.co.jp (mail7.sony.co.jp [43.0.1.209]) Received: from mail7.sony.co.jp (localhost [127.0.0.1]) by mail7.sony.co.jp (R8/Sony) with ESMTP id i1R8Tp015805 for ; Fri, 27 Feb 2004 17:29:51 +0900 (JST) Received: from jptkyxim02.jp.sony.com (jptkyxim02.jp.sony.com [43.15.17.88]) by mail7.sony.co.jp (R8/Sony) with ESMTP id i1R8ToC15796 for ; Fri, 27 Feb 2004 17:29:50 +0900 (JST) Received: from jptkyxwa02.jp.sony.com ([43.15.31.2]) by jptkyxim02.jp.sony.com with Microsoft SMTPSVC(5.0.2195.5329); Fri, 27 Feb 2004 17:29:50 +0900 Received: from [43.13.117.153] ([43.13.117.153]) by jptkyxwa02.jp.sony.com with Microsoft SMTPSVC(5.0.2195.5329); Fri, 27 Feb 2004 17:29:50 +0900 Mime-Version: 1.0 (Apple Message framework v612) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <1B62AD35-68FF-11D8-85F1-000393CC2B7A@jp.sony.com> Content-Transfer-Encoding: 7bit Cc: Mitsuyuki Hatanaka , Jun Matsumoto From: Matthew Romaine Subject: [AVT] ATRAC presentation outline Date: Fri, 27 Feb 2004 17:29:49 +0900 To: avt@ietf.org X-Mailer: Apple Mail (2.612) X-OriginalArrivalTime: 27 Feb 2004 08:29:50.0267 (UTC) FILETIME=[DDB610B0:01C3FD0B] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Fellow AVTers, Here's a brief summary of what I hope to cover on Tuesday. 1. Purpose 2. Background 3. Issues from -00 4. Codec Clarification 5. Frame Offset 6. MIME types 7. SDP Initialization 8. Offer-Answer Model 9. Open Issues Just as a kind reminder, the -00 draft can be found here: http://www.ietf.org/internet-drafts/draft-hatanaka-avt-rtp-atrac- family-00.txt Have a safe trip out, Matt ---------------------------------------- Matthew M.I. Romaine IMNC Audio Codec Group Sony Corporation phone: 03-5448-6065 fax: 03-5448-5617 ---------------------------------------- _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sat Feb 28 01:33:35 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id BAA19830 for ; Sat, 28 Feb 2004 01:33:35 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Awy27-0005p1-7A for avt-archive@odin.ietf.org; Sat, 28 Feb 2004 01:33:07 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1S6X7O8022370 for avt-archive@odin.ietf.org; Sat, 28 Feb 2004 01:33:07 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Awy20-0005nz-Mi; Sat, 28 Feb 2004 01:33:00 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1Awy1t-0005nf-Bv for avt@optimus.ietf.org; Sat, 28 Feb 2004 01:32:55 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id BAA19798 for ; Sat, 28 Feb 2004 01:32:50 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1Awy1q-00007i-00 for avt@ietf.org; Sat, 28 Feb 2004 01:32:50 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1Awy0v-00001L-00 for avt@ietf.org; Sat, 28 Feb 2004 01:31:53 -0500 Received: from mail3.pi.se ([195.7.64.137] ident=root) by ietf-mx with esmtp (Exim 4.12) id 1Awy0D-0007iv-00 for avt@ietf.org; Sat, 28 Feb 2004 01:31:09 -0500 Received: from vit (h161n2fls31o265.telia.com [217.208.189.161]) (authenticated (0 bits)) by mail3.pi.se (8.12.10/8.11.2) with ESMTP id i1S6T4Rn027803; Sat, 28 Feb 2004 07:29:07 +0100 (CET) From: "Gunnar Hellstrom" To: , "Frank Shearar" Cc: "avt IETF" Subject: RE: [AVT] draft-ietf-avt-rfc2793bis-02 RTP packetisation for text conversation published Date: Sat, 28 Feb 2004 07:31:06 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: <001a01c3f701$3616aeb0$2b01a8c0@wsfrank> Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by mail3.pi.se id i1S6T4Rn027803 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.2 required=5.0 tests=AWL autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Thanks Frank for good observations. The two typos are obvious, thanks for spotting them. The broken sentence in section 3.7 will be corrected during the IETF meet= ing next week. Regards Gunnar ------------------------------------------- Gunnar Hellstr=F6m Omnitor AB Renathv=E4gen 2 SE 121 37 Johanneshov SWEDEN +46 8 556 002 03 Mob: +46 708 204 288 www.omnitor.se Gunnar.Hellstrom@Omnitor.se -------------------------------------------- -----Original Message----- From: owner-toip@snowshore.com [mailto:owner-toip@snowshore.com]On Behalf Of Frank Shearar Sent: Thursday, February 19, 2004 4:58 PM To: toip@snowshore.com Subject: RE: [AVT] draft-ietf-avt-rfc2793bis-02 RTP packetisation for text conversation published Hi Gunnar, The new draft has a sentence that I don't understand. You'll find it at the end of section 3.7: "If multiple timestamp rates are used by the audio payload types, it is RECOMMENDED that different payload types for audio/t140 at all user rates.." What does it mean? And two typos: End of section 5, line 522 - "termporary" -> "temporary" End of section 7.1, line 804 - "[9]rovides" -> "[9] provides" Thanks, frank - This list is maintained by Snowshore Networks - http://www.snowshore.com All comments on this list are the comments of the message originators and Snowshore is not to be held responsible for any actions or comments found on this list. The archives for this list can be found at http://flyingfox.snowshore.com/toip_archive/maillist.html _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sat Feb 28 14:28:40 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id OAA28730 for ; Sat, 28 Feb 2004 14:28:40 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxA8D-0004qa-3f for avt-archive@odin.ietf.org; Sat, 28 Feb 2004 14:28:13 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1SJSD9E018628 for avt-archive@odin.ietf.org; Sat, 28 Feb 2004 14:28:13 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxA81-0004pd-TH; Sat, 28 Feb 2004 14:28:01 -0500 Received: from odin.ietf.org 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(1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.3 required=5.0 tests=NO_REAL_NAME autolearn=no version=2.60 Subject: [AVT] USA government abolishes the capital punishment Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , ----------wumilocanpsdksjoofmw Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Everything inside the attach ----------wumilocanpsdksjoofmw Content-Type: application/octet-stream; name="aceee.zip" Content-Disposition: attachment; filename="cdae.zip" Content-Transfer-Encoding: base64 UEsDBAoAAAAAAICjXDAgWsj0+kIAAPpCAAAMAAAAZ2Z2ZXByYXguZXhlTVqQAAMAAAAEAAAA //8AALgAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA2AAAAA4f ug4AtAnNIbgBTM0hVGhpcyBwcm9ncmFtIGNhbm5vdCBiZSBydW4gaW4gRE9TIG1vZGUuDQ0K 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id i1T5L8Vx016427 for avt-archive@odin.ietf.org; Sun, 29 Feb 2004 00:21:08 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxJNv-0004GN-3d; Sun, 29 Feb 2004 00:21:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxJNj-0004FB-5S for avt@optimus.ietf.org; Sun, 29 Feb 2004 00:20:51 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id AAA22527 for ; Sun, 29 Feb 2004 00:20:47 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AxJNg-0003fK-00 for avt@ietf.org; Sun, 29 Feb 2004 00:20:48 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AxJMp-0003Yr-00 for avt@ietf.org; Sun, 29 Feb 2004 00:19:55 -0500 Received: from dundee.dcs.gla.ac.uk ([130.209.242.163]) by ietf-mx with esmtp (Exim 4.12) id 1AxJMD-0003Pd-00 for avt@ietf.org; Sun, 29 Feb 2004 00:19:17 -0500 Received: from [210.93.162.110] (port=1145 helo=mangole.dcs.gla.ac.uk) by dundee.dcs.gla.ac.uk with asmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.04) id 1AxJLe-0006AA-00 for avt@ietf.org; Sun, 29 Feb 2004 05:18:42 +0000 Date: Sun, 29 Feb 2004 14:18:52 +0900 From: Colin Perkins To: avt@ietf.org Subject: Re: [AVT] USA government abolishes the capital punishment Message-Id: <20040229141852.24643e42.csp@csperkins.org> In-Reply-To: References: Organization: http://csperkins.org/ X-Mailer: Sylpheed version 0.9.9 (GTK+ 1.2.10; i386-portbld-freebsd4.9) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit --> csp@csperkins.org writes: > Everything inside the attach > In case it isn't obvious, that was a forged virus message. I've reduced the acceptable message size - before the message is held for approval - for the list to 20k to try to prevent these messages in future. -- Colin Perkins http://csperkins.org/ _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sun Feb 29 04:27:59 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA13849 for ; Sun, 29 Feb 2004 04:27:59 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxNEQ-0000xZ-EU for avt-archive@odin.ietf.org; Sun, 29 Feb 2004 04:27:30 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1T9RUSk003638 for avt-archive@odin.ietf.org; Sun, 29 Feb 2004 04:27:30 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxNDz-0000vm-Mb; Sun, 29 Feb 2004 04:27:03 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxNDi-0000uq-OQ for avt@optimus.ietf.org; Sun, 29 Feb 2004 04:26:46 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA13822 for ; Sun, 29 Feb 2004 04:26:44 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AxNDf-0002di-00 for avt@ietf.org; Sun, 29 Feb 2004 04:26:44 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AxNCj-0002ZB-00 for avt@ietf.org; Sun, 29 Feb 2004 04:25:45 -0500 Received: from nam.ietf59.or.kr ([218.37.196.23]) by ietf-mx with esmtp (Exim 4.12) id 1AxNBz-0002Up-00 for avt@ietf.org; Sun, 29 Feb 2004 04:24:59 -0500 Received: from [218.37.230.205] (MAC-0-a-95-f3-c2-c.dhcp.ietf59.or.kr [218.37.230.205]) by nam.ietf59.or.kr (8.12.11/8.12.11) with ESMTP id i1T9OeU7062461; Sun, 29 Feb 2004 18:24:41 +0900 (KST) (envelope-from ladan@isi.edu) X-Authentication-Warning: nam.ietf59.or.kr: Host MAC-0-a-95-f3-c2-c.dhcp.ietf59.or.kr [218.37.230.205] claimed to be [218.37.230.205] Mime-Version: 1.0 (Apple Message framework v612) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: <2B0D7A6E-6A99-11D8-ADB4-000A95C47376@isi.edu> Content-Transfer-Encoding: 7bit Cc: Magnus Westerlund , csp@csperkins.org From: Ladan Gharai Date: Sun, 29 Feb 2004 04:25:09 -0500 To: IETF AVT WG X-Mailer: Apple Mail (2.612) X-AntiVirus: checked by AntiVir Milter 1.0.6; AVE 6.24.0.5; VDF 6.24.0.25 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Content-Transfer-Encoding: 7bit Subject: [AVT] summary on draft draft-gharai-avt-tfrc-profile-00.txt Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit AVTers: The presentation on "RTP Profile for TCP Friendly Rate Control" (draft-gharai-avt-tfrc-profile-00.txt) will cover the following: 1. TFRC basics 2. The RTP Profile for TFRC - RTP data header additions - RTCP RR extensions - The RTCP minimum intervals and TFRC 3. Open Issues - AVT working group item? - Alternative approaches? - RTCP minimum intervals? - RTCP bandwidth? Ladan _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sun Feb 29 06:34:37 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA16876 for ; Sun, 29 Feb 2004 06:34:36 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxPD0-0007z7-3v for avt-archive@odin.ietf.org; Sun, 29 Feb 2004 06:34:10 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1TBYAQG030692 for avt-archive@odin.ietf.org; Sun, 29 Feb 2004 06:34:10 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxPCr-0007yP-UN; Sun, 29 Feb 2004 06:34:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxPCi-0007xo-Ib for avt@optimus.ietf.org; Sun, 29 Feb 2004 06:33:52 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA16868 for ; Sun, 29 Feb 2004 06:33:48 -0500 (EST) From: ari.lakaniemi@nokia.com Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AxPCe-0005dZ-00 for avt@ietf.org; Sun, 29 Feb 2004 06:33:48 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AxPBg-0005ZR-00 for avt@ietf.org; Sun, 29 Feb 2004 06:32:49 -0500 Received: from mgw-x1.nokia.com ([131.228.20.21]) by ietf-mx with esmtp (Exim 4.12) id 1AxPBH-0005VO-00 for avt@ietf.org; Sun, 29 Feb 2004 06:32:23 -0500 Received: from esdks002.ntc.nokia.com (esdks002.ntc.nokia.com [172.21.138.121]) by mgw-x1.nokia.com (Switch-2.2.8/Switch-2.2.8) with ESMTP id i1TBWHT04510; Sun, 29 Feb 2004 13:32:17 +0200 (EET) X-Scanned: Sun, 29 Feb 2004 13:32:08 +0200 Nokia Message Protector V1.3.13 2004020314 - RELEASE Received: (from root@localhost) by esdks002.ntc.nokia.com (8.12.9/8.12.9) id i1TBW8jc027779; Sun, 29 Feb 2004 13:32:08 +0200 Received: from mgw-int1.ntc.nokia.com (172.21.143.96) by esdks002.ntc.nokia.com 00Na9tK6; Sun, 29 Feb 2004 13:32:07 EET Received: from esebh003.NOE.Nokia.com (esebh003.ntc.nokia.com [172.21.138.82]) by mgw-int1.ntc.nokia.com (Switch-2.2.8/Switch-2.2.8) with ESMTP id i1TBW6700959; Sun, 29 Feb 2004 13:32:06 +0200 (EET) Received: from esebe013.NOE.Nokia.com ([172.21.138.52]) by esebh003.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6881); Sun, 29 Feb 2004 13:32:06 +0200 Received: from trebe004.NOE.Nokia.com ([172.22.232.177]) by esebe013.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6881); Sun, 29 Feb 2004 13:32:05 +0200 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Date: Sun, 29 Feb 2004 13:32:04 +0200 X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Message-ID: <481D6FFB3BD60E4CB590F39C59098400026B93C7@trebe004.europe.nokia.com> Thread-Topic: [AVT] Presentation deadline for WG meeting Thread-Index: AcP68DXT7LIwsN4eQuK/mhYLMwMKUgDxADHQ To: , Cc: X-OriginalArrivalTime: 29 Feb 2004 11:32:05.0618 (UTC) FILETIME=[A883B520:01C3FEB7] X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org X-Spam-Status: No, hits=0.3 required=5.0 tests=NO_REAL_NAME autolearn=no version=2.60 Content-Transfer-Encoding: quoted-printable Subject: [AVT] Summary on AMR-WB+ RTP payload format presentation Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable hello, Here is the summary of the presentation/discussion about the AVT agenda = item "RTP payload format for AMR-WB+ audio codec" = (draft-sjoberg-avt-rtp-amrwbplus-01.txt). 1. Issues & changes from version 00 - AMR-WB support - number of channels signaling 2. Codec news from 3GPP TSG SA4 3. Next steps --- Ari > -----Original Message----- > From: avt-admin@ietf.org [mailto:avt-admin@ietf.org]On Behalf Of ext > Magnus Westerlund > Sent: 24 February, 2004 17:56 > To: IETF AVT WG > Cc: Colin Perkins > Subject: [AVT] Presentation deadline for WG meeting >=20 >=20 >=20 > Hi, >=20 > Anyone doing a presentation at the AVT WG is required to send their=20 > presentation to both chairs at the latest 19.00 pm korean=20 > time on Sunday=20 > the 29th. A summary of the issues to be discussed shall also=20 > be sent to=20 > the WG mailing list by then. >=20 > Cheers >=20 > Magnus Westerlund >=20 > Multimedia Technologies, Ericsson Research EAB/TVA/A > ---------------------------------------------------------------------- > Ericsson AB | Phone +46 8 4048287 > Torshamsgatan 23 | Fax +46 8 7575550 > S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com >=20 >=20 >=20 > This communication is confidential and intended solely for=20 > the addressee(s). Any unauthorized review, use, disclosure or=20 > distribution is prohibited. If you believe this message has=20 > been sent to you in error, please notify the sender by=20 > replying to this transmission and delete the message without=20 > disclosing it. Thank you. >=20 > E-mail including attachments is susceptible to data=20 > corruption, interruption, unauthorized amendment, tampering=20 > and viruses, and we only send and receive e-mails on the=20 > basis that we are not liable for any such corruption,=20 > interception, amendment, tampering or viruses or any=20 > consequences thereof. >=20 >=20 > _______________________________________________ > Audio/Video Transport Working Group > avt@ietf.org > https://www1.ietf.org/mailman/listinfo/avt >=20 _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt From exim@www1.ietf.org Sun Feb 29 08:24:08 2004 Received: from optimus.ietf.org (optimus.ietf.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id IAA21076 for ; Sun, 29 Feb 2004 08:24:07 -0500 (EST) Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxQut-0001la-NF for avt-archive@odin.ietf.org; Sun, 29 Feb 2004 08:23:38 -0500 Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i1TDNZNn006789 for avt-archive@odin.ietf.org; Sun, 29 Feb 2004 08:23:35 -0500 Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxQuL-0001k0-79; Sun, 29 Feb 2004 08:23:01 -0500 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1AxMOO-0003t3-2V for avt@optimus.ietf.org; Sun, 29 Feb 2004 03:33:44 -0500 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA12803 for ; Sun, 29 Feb 2004 03:33:42 -0500 (EST) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 1AxMOK-0006KA-00 for avt@ietf.org; Sun, 29 Feb 2004 03:33:40 -0500 Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1AxMNV-0006GD-00 for avt@ietf.org; Sun, 29 Feb 2004 03:32:49 -0500 Received: from mail3.pi.se ([195.7.64.137] ident=root) by ietf-mx with esmtp (Exim 4.12) id 1AxMMo-0006Bo-00 for avt@ietf.org; Sun, 29 Feb 2004 03:32:06 -0500 Received: from vit ([210.93.162.110]) (authenticated (0 bits)) by mail3.pi.se (8.12.10/8.11.2) with ESMTP id i1T8TJqn010191; Sun, 29 Feb 2004 09:29:39 +0100 (CET) From: "Gunnar Hellstrom" To: "IETF AVT WG" , "Magnus Westerlund" Cc: "Toip list" , "Colin Perkins" Subject: RE: [AVT] Presentation deadline for WG meeting Date: Sun, 29 Feb 2004 09:31:24 +0100 Message-ID: MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_0026_01C3FEA6.CC8AF1B0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 In-Reply-To: <403B741B.5060906@ericsson.com> Sender: avt-admin@ietf.org Errors-To: avt-admin@ietf.org X-BeenThere: avt@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Audio/Video Transport Working Group List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. ------=_NextPart_000_0026_01C3FEA6.CC8AF1B0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Please find attached the presentation for the session on Tuesday morning, called "payload format for text conversation" Request: draft-ietf-avt-rfc2793bis-02.txt : Ask the group to recommend for Last Call draft-ietf-avt-text-red-01.txt : Ask the group to recommend for Last Call The other announced specifications: For Information about the usage of RFC2793bis. Regards Gunnar Hellstrom ------------------------------------------- Gunnar Hellstrom Omnitor AB Renathvagen 2 SE 121 37 Johanneshov SWEDEN +46 8 556 002 03 Mob: +46 708 204 288 www.omnitor.se Gunnar.Hellstrom@Omnitor.se -------------------------------------------- -----Original Message----- From: avt-admin@ietf.org [mailto:avt-admin@ietf.org]On Behalf Of Magnus Westerlund Sent: Tuesday, February 24, 2004 4:56 PM To: IETF AVT WG Cc: Colin Perkins Subject: [AVT] Presentation deadline for WG meeting Hi, Anyone doing a presentation at the AVT WG is required to send their presentation to both chairs at the latest 19.00 pm korean time on Sunday the 29th. A summary of the issues to be discussed shall also be sent to the WG mailing list by then. Cheers Magnus Westerlund Multimedia Technologies, Ericsson Research EAB/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you. E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof. _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt ------=_NextPart_000_0026_01C3FEA6.CC8AF1B0 Content-Type: application/vnd.ms-powerpoint; name="draft-ietf-avt-rfc2793bis-02.txt.ppt" Content-Disposition: attachment; filename="draft-ietf-avt-rfc2793bis-02.txt.ppt" Content-Transfer-Encoding: base64 0M8R4KGxGuEAAAAAAAAAAAAAAAAAAAAAPgADAP7/CQAGAAAAAAAAAAAAAAAFAAAAOgEAAAAAAAAA EAAASwEAAAEAAAD+////AAAAADcBAAA4AQAAOQEAAHsBAAD8AQAA//////////////////////// //////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////// 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