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Re: Simulcast V1

From: Byron Campen <docfaraday@gmail.com>
Date: Fri, 14 Aug 2015 14:14:46 -0500
To: Bernard Aboba <Bernard.Aboba@microsoft.com>
Cc: "public-webrtc@w3.org" <public-webrtc@w3.org>
Message-ID: <55CE3E26.9060601@gmail.com>
On 8/14/15 12:39 PM, Bernard Aboba wrote:
> On Aug 14, 2015, at 09:03, Byron Campen <docfaraday@gmail.com> wrote:
>> any object-oriented simulcast API would need support for draft-ietf-mmusic-sdp-simulcast
> [BA] Wrong.
> Support for the multiplexing modes seen in practice (e.g. Separate SSRCs for each received stream) cannot be accomplished via this draft, but object approaches handle this so the draft has no value for poor man's simulcast in the simple case, and no utility for complex cases either.
    It is true that the simulcast draft does not help you signal 
simulcast in this completely different way. Has someone written some 
spec on this alternate approach, or engaged with the authors of the 
simulcast draft? Don't get me wrong, both approaches seem reasonable to 
me (at least at first blush, although having the thumbnail video be a 
different synchronization source seems odd), but only one of them seems 
to have been written down in a draft standard somewhere.

Best regards,
Byron Campen
Received on Friday, 14 August 2015 19:15:16 UTC

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