Re: [MMUSIC] Proposed agenda for the joint MMUSIC/RTCWEB inteirmmeeting

"Roni Even" <ron.even.tlv@gmail.com> Tue, 22 January 2013 10:44 UTC

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From: "Roni Even" <ron.even.tlv@gmail.com>
To: "'Magnus Westerlund'" <magnus.westerlund@ericsson.com>
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Date: Tue, 22 Jan 2013 12:41:54 +0200
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Cc: 'Cullen Jennings' <fluffy@cisco.com>, =?ISO-8859-1?Q?'Ari_Ker=E4nen'?= <ari.keranen@ericsson.com>, mmusic@ietf.org, 'Gonzalo Camarillo' <Gonzalo.Camarillo@ericsson.com>, 'Flemming Andreasen' <fandreas@cisco.com>, rtcweb@ietf.org
Subject: Re: [MMUSIC] Proposed agenda for the joint MMUSIC/RTCWEB inteirmmeeting
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Hi Magnus,
My concern is that it is not easy to provide a proposal to a subject that is
not clear. I also have views about these topics but seeing no requirements
or use cases it is difficult to write a draft.
I believe that the actual syntax depends on the bundle decision so any work
now need to assume a bundle architecture.
Are there any requirements for a solution even if we are looking for a new
way or to leverage existing mechanisms like RFC 5576.

I will try to write something based on the CLUE RTP mapping draft we are
discussing that tries to address a similar problem as far as I understand.

BTW: will these drafts be MMUSIC drafts or RTCweb?

Thanks
Roni Even

-----Original Message-----
From: Magnus Westerlund [mailto:magnus.westerlund@ericsson.com] 
Sent: 22 January, 2013 10:16 AM
To: Roni Even
Cc: 'Ted Hardie'; rtcweb@ietf.org; mmusic@ietf.org; 'Cullen Jennings'; 'Ari
Keränen'; 'Gonzalo Camarillo'; 'Flemming Andreasen'
Subject: Re: [MMUSIC] Proposed agenda for the joint MMUSIC/RTCWEB
inteirmmeeting

On 2013-01-22 06:49, Roni Even wrote:
> Hi,
> I am not sure what will be discussed in multiple flow SDP 
> representation and

This is a very fundamental choice of how SDP is going to deal with RTP
sessions that include multiple media streams, i.e. SSRCs carrying different
media sources and negotiation of media stream related information and
parameters.

I understand some drafts are under preparation here.

This is definitely something that will impact CLUE also.

> Mapping stream/track label concepts to SDP identifiers. Are there 
> drafts or is it an open discussion.

This is more an WebRTC focused issues, but it has clearly overlap with the
relations discussion on how you identify media sources, different encodings
of the same media stream (in simulcast and scalable coding) their repair
streams all the way up to WebRTC specific concepts of MediaStream.

For this my colleagues and I are preparing a draft. I don't expect it to be
available before second half of next week.

I think this is relevant for CLUE in the perspective of trying to understand
what is common abstractions and what is not.

Cheers

Magnus

> What about the relation of these two topics to CLUE?
> 
> Thanks
> Roni Even
> 
> 
> -----Original Message-----
> From: mmusic-bounces@ietf.org [mailto:mmusic-bounces@ietf.org] On 
> Behalf Of Ted Hardie
> Sent: 14 January, 2013 7:41 PM
> To: rtcweb@ietf.org; mmusic@ietf.org
> Cc: Cullen Jennings; Magnus Westerlund; Ari Keränen; Gonzalo 
> Camarillo; Flemming Andreasen
> Subject: [MMUSIC] Proposed agenda for the joint MMUSIC/RTCWEB inteirm 
> meeting
> 
> Below is a proposed agenda which has been discussed among the RTCWEB 
> and MMUSIC chairs; comments welcome.
> 
> Ted Hardie
> 
> 
> Day 1 (February 5th, 2013)
> 
> Multiple Flow SDP representation
> 
> 90 minutes: Framing discussion (Magnus is working on text)
> 
> 120 minutes: drafts discussion
> 
> 
> Objective: decide on architecture for large numbers of similar streams
> 
> SDP for Data channels
> 
> 60 minutes: resolve open issues
> 
> Day 2 (February 6, 2013)
> 
> SDP Grouping (Bundle/MMT/one-rtp)
> 
> 60 Minutes: framing discussion
> 
> 120 Minutes: drafts discussion
> 
> Objective: select an approach and provide direction to editors
> 
> Mapping stream/track label concepts to SDP identifiers
> 
> 60 minutes
> 
> Objective: determine requirements
> 
> Day 3: (February 7, 2013)
> 
> Trickle ICE
> 
> 120 minutes
> 
> Objective: review offer/answer semantic impact; establish initiation, 
> termination and error handling
> 
> JSEP
> 
> 120 minutes
> 
> Objective: review and resolve open issues with the document 
> _______________________________________________
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> 
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-- 

Magnus Westerlund

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