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Re: [rtcweb] Video Codec Selection Alternatives 10 and 11: Merge?

<Markus.Isomaki@nokia.com> Mon, 25 November 2013 19:52 UTC

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From: Markus.Isomaki@nokia.com
To: magnus.westerlund@ericsson.com, lgeyser@gmail.com
Thread-Topic: [rtcweb] Video Codec Selection Alternatives 10 and 11: Merge?
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Date: Mon, 25 Nov 2013 19:51:41 +0000
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Cc: rtcweb@ietf.org
Subject: Re: [rtcweb] Video Codec Selection Alternatives 10 and 11: Merge?
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Hi,

magnus.westerlund@ericsson.com wrote:
> 
> On 2013-11-25 15:30, Leon Geyser wrote:
> > Hi Magnus,
> >
> > Was H.263 a typo?
> > I agree that 10 can be changed to:
> > 10. MUST implement at least two of {VP8, H.264 CBP, H.261}
> 
> Sorry,
> 
> I did a mistake in this call. I missed that 10 and 11 talked about H.261 and
> H.263 respectively.
> 
> I think the above question of writing 10 in the above proposed format is then
> the relevant question to the WG.
> 

I agree that alternatives 10. and 11. are better to be written in the same format:

10. MUST implement at least two of {VP8, H.264 CBP, H.261}
11. MUST implement at least two of {VP8, H.264, H.263}

I assume H.264 CBP = Constrained Baseline Profile as proposed in draft-burman-rtcweb-h264-proposal.

For H.263 we would need to define if it means H.263 Baseline or something beyond that. I have seen at least Stephan Wenger arguing that H.263 Baseline is not suitable for WebRTC. 

Markus

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