Subject: Re: [rtcweb] Optimum SDP Parameters for Video Call (OTT)

From: Harald Alvestrand <[email-masked]>
Date: Mon, 23 Sep 2019 23:31:53 +0200

Just a couple of answers....

Den 27.08.2019 11:50, skrev Vikas Jayaprakash:
> Hi Expert Group,
> 
> I have been following this group sometime and have a questions.
> Your inputs are highly appreciated.
> 
> I am here focussed and interested to know most optimum SDP values used
> for Video call initiated by Web RTC client towards WebRTC Gateway in a
> RCS network.
> 
>  1. Is  RFC 7742 the right standard to refer to determine standard
>     values for VP8/H264 or there are latest RFCs that dictates the
>     optimum values?

Optimum values depend on your application, your endpoint hardware and
your network conditions. There is no universal answer here.

>  2. Are there any more factors that decide optimum values part from below:
>      1.  Bandwidth Information
>      2.  Packetization
>      3. fmtp/rtcp-rsize, mux/maxptime/
>  3. Any offer/answer SDP examples that are currently run on Google WRTC
>     client would be very helpful

If you go to chrome://webrtc-internals before starting a call, you will
find that the offer/answer SDP that is used by any WebRTC-using
Javascript application is logged there.

>  4. Any feedback on End to End QoS for Video call over RCS network.
> 
> 
> Thanks,
> Vikas
> 
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