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Re: [rtcweb] Resolution negotiation - a contribution

Harald Alvestrand <harald@alvestrand.no> Fri, 13 April 2012 07:45 UTC

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Date: Fri, 13 Apr 2012 09:45:53 +0200
From: Harald Alvestrand <harald@alvestrand.no>
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Resolution negotiation - a contribution
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On 04/12/2012 11:13 PM, Stephan Wenger wrote:
>
> On 4.12.2012 12:08 , "Harald Alvestrand"<harald@alvestrand.no>  wrote:
>
>> On 04/12/2012 08:19 PM, Stephan Wenger wrote:
>>> Hi Harald,
>>> Thanks for this strawman.  I believe it should work, but I fail to see
>>> how
>>> a two dimensional negotiation requirement (negotiating max values for
>>> framerate and image size--which, in turn, also has two-dimensional
>>> properties) leads to better interop than a one dimensional negotiation
>>> (pixels per second processing requirement).
>> Stephan,
>>
>> I do not see this (or the requirement from the use-cases document) first
>> and foremost a decoder complexity negotiation; it is a negotiation of
>> how much data it is useful to send, given the recipient's intended use
>> of that data.
> Then such a negotiation should be executed in addition.  Decoder cycle
> requirement do matter in practical implementations.
Feel free to propose language that captures this requirement. As noted, 
my I-D fragment doesn't.

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