Re: [rtcweb] Clarification on simulcast and RID and RepairedRtpStreamId

Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com> Tue, 04 December 2018 10:01 UTC

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From: Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com>
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Date: Tue, 4 Dec 2018 11:05:01 +0100
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Archived-At: <https://mailarchive.ietf.org/arch/msg/rtcweb/8PfJO31KFA3PruGrR9kI2SfB5pY>
Subject: Re: [rtcweb] Clarification on simulcast and RID and RepairedRtpStreamId
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> However, an RTP middlebox has the freedom to introduce those header
> extensions when switching. They do not need to be sent end-to-end all
> the time. So after the initial establishment of them, I see it as the
> central middlebox responsibility to ensure that they are included in the
> down stream legs towards the conference participants. Also at least for
> video introducing them only on reception of a FIR also makes sense.

Same could be said about changing the ssrc to avoid collisions and we 
would have avoided our selves to introduced all this new ids.

Best regards

Sergio