Re: [AVTCORE] Some (SFrame RTP encapsulation) questions to ponder
Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com> Thu, 11 March 2021 08:15 UTC
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From: Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com>
Date: Thu, 11 Mar 2021 09:14:56 +0100
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To: Bernard Aboba <bernard.aboba@gmail.com>
Cc: IETF AVTCore WG <avt@ietf.org>
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Subject: Re: [AVTCORE] Some (SFrame RTP encapsulation) questions to ponder
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El jue, 11 mar 2021 a las 7:22, Bernard Aboba (<bernard.aboba@gmail.com>) escribió: > > I ask this because there appear to be codecs that are widely deployed > (e.g. VP8) that require "hacks" for SFUs to forward, as noted in the > presentation at IETF 109. In the case of VP8, the "hack" was required > because of a deficiency in the VP8 decoder specification (e.g. the > requirement that PictureIDs be consecutive, not just monotonically > increasing). This means that the "hacks" described can't be eliminated > just by coming up with a better RTP forwarding extension. You'd actually > need to change the VP8 specification and upgrade VP8 decoders. > > The PictureID and the TL0PICIDX are defined in rfc7741 RTP Payload Format for VP8 Video and not on the VP8 spec. So, if using an agnostic packetizer instead of the rfc7741 one, the issue just doesn't exist. Best regards Sergio
- [AVTCORE] Some (SFrame RTP encapsulation) questio… Bernard Aboba
- Re: [AVTCORE] Some (SFrame RTP encapsulation) que… Sergio Garcia Murillo
- Re: [AVTCORE] Some (SFrame RTP encapsulation) que… Alexandre GOUAILLARD
- Re: [AVTCORE] Some (SFrame RTP encapsulation) que… Mo Zanaty (mzanaty)