[rtcweb] Finishing up the Video Codec document

Adam Roach <adam@nostrum.com> Tue, 25 November 2014 23:33 UTC

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Date: Tue, 25 Nov 2014 17:33:47 -0600
From: Adam Roach <adam@nostrum.com>
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Cc: Harald Alvestrand <hta@google.com>
Subject: [rtcweb] Finishing up the Video Codec document
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I've updated the draft-ietf-rtcweb-video based on the minutes from 
Hawaii. Now that we have a clear path to success, I'd like to get the 
document finalized and published as quickly as possible. This means I 
need your feedback on the remaining open issues (1, 4, and 5, below). If 
you are CCed on this mail, it's because you took an action item in 
Hawaii, and I'm waiting to hear back from you.

New version: http://datatracker.ietf.org/doc/draft-ietf-rtcweb-video/
Diff: https://tools.ietf.org/rfcdiff?url2=draft-ietf-rtcweb-video-03.txt

Action item for Harald Alvestrand from the minutes:
> Mo Zanaty: An IANA registered header with reference to 3GPP document. 
> Codec specific mechanism way of doing this.
> Harald: Will send some suggestions on doing this.

Action item for Bernard Aboba and Stephan Wenger: collect list of H.264 
SEI messages we want to call out as MUST and/or SHOULD.

Open Issue 1: If you don't want sRGB to be the default color space, say 
something now.

Open Issue 2 (closed): Took "screen source video metadata" issue out of 
the document, as this is an RTP issue, not a codec issue.

Open Issue 3 (closed): New text in "stream orientation" section calling 
out various MUST/SHOULD/MAY levels, based on what I took away from the 
mic in Hawaii. If you care about this, double-check that these are what 
you expect them to be.

Open Issue 4: In Toronto, it was suggested that we don't need to specify 
support for "bilinear" and "none" filter styles, since they're already 
required. I'm happy to remove the statement if someone can point me to 
where this is otherwise mandated. If no one comes forward with a 
citation, I'm going to close this open issue as harmless.

Open Issue 5: Waiting on feedback from Bernard and Stefan, as detailed 

Open Issue 6 (closed): Please see the text in section 5 of the new 
document, which tracks the text from the Novel Proposal email pretty