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Re: [Perc] Drop support for E2E RTP header extensions

Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com> Sat, 13 May 2017 16:00 UTC

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To: Cullen Jennings <fluffy@iii.ca>
References: <49c7de34-8bc6-bb7d-4524-0af26089eecb@gmail.com> <1CF6F66C-939F-484D-8C53-46ACB8CA69BE@vidyo.com> <27ca2993-5c66-8388-7187-b47ed8ae1340@gmail.com> <CAL02cgRDaz7BT+GzxWJ0cM7rebhd2cu2WbPy+Mwjkk0wJK=6mw@mail.gmail.com> <aef9a32f-f761-c9e8-de99-57c4acfd5088@gmail.com> <8FD07F5D-CD52-445B-AF75-BA1696F3A151@mozilla.com> <aff1a9bf-7dcb-71e6-3d01-afe5cac87ca5@gmail.com> <E234DDC1-9AB5-4C64-91C0-A8FCB58DA351@iii.ca> <8ddbf495-ac23-8529-aa0b-a233a0b336c0@gmail.com> <74BE8407-9AC0-45D3-9476-5C109A7B7A3C@iii.ca> <d79853a2-7fa4-2898-03ae-fa283990476f@gmail.com> <F0599569-892D-411C-847F-A21203B27C16@iii.ca>
Cc: Nils Ohlmeier <nohlmeier@mozilla.com>, Richard Barnes <rlb@ipv.sx>, Jonathan Lennox <jonathan@vidyo.com>, "perc@ietf.org" <perc@ietf.org>
From: Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com>
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Date: Sat, 13 May 2017 17:58:41 +0200
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Subject: Re: [Perc] Drop support for E2E RTP header extensions
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On 13/05/2017 17:04, Cullen Jennings wrote:
> Some things that were marked as needing E2E integrity are the video orientation (CVO) and the synchronization metadata. I don't see anything that would cause us to change the desire to have E2E integrity for theses.

Well, except that CVO only makes sense if ALL participants in the 
conference supports it, if not, the ones not supporting the extension 
will see the image not rotated. As of today, Firefox does not yet 
support it, so the reality is the CVO is not used at all on SFU 
conferences.

Sorry to ask, what is the synchronization metadata?

Best regards
Sergio

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