Re: [MMUSIC] Proposed agenda for the joint MMUSIC/RTCWEB inteirmmeeting
"Roni Even" <ron.even.tlv@gmail.com> Tue, 22 January 2013 13:21 UTC
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From: Roni Even <ron.even.tlv@gmail.com>
To: 'Magnus Westerlund' <magnus.westerlund@ericsson.com>
References: <CA+9kkMAB8SG1ojzYDxQJq4TX44qZEkjfYcLutnKbdRwu+3UcbA@mail.gmail.com> <1.e0d2fbab2393f09b6fda@gmail.com> <50FE4AC7.4010508@ericsson.com> <007d01cdf88d$1b4f2020$51ed6060$@gmail.com> <50FE717A.7080302@ericsson.com>
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Date: Tue, 22 Jan 2013 15:18:45 +0200
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Cc: 'Cullen Jennings' <fluffy@cisco.com>, 'Ari Keränen' <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, Thanks, I think that the first subject is what we were also discussing in CLUE when looking at RTP mapping and we considered the also the individual drafts on maxssrc, and srcname. As for the two options I am not sure that we must chose. The first one "A" is the current practice and I agree it is under specified today. The second on "B" depends on how we define bundle. Looking at option "B" was suggested also for RTP mapping in CLUE (for example with regards to simulcast) Roni -----Original Message----- From: Magnus Westerlund [mailto:magnus.westerlund@ericsson.com] Sent: 22 January, 2013 1:01 PM 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 11:41, Roni Even wrote: > 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. And I think the question of how one deals with multiple media streams in an RTP session is an important input into the BUNDLE discussion. > Are there any requirements for a solution even if we are looking for a > new way or to leverage existing mechanisms like RFC 5576. To my understanding what we are trying to achieve is making progress into three different subjects. 1) How multiple media streams are handled in SDP. I think there exist two proposal from the MMUSIC discussion: A) One media description per RTP session and media type. Each media stream are identified and provided with additional information using stream specific parameters. B) Each media description is a media stream and RTP sessions are then expressed as Bundle of media descriptions. 2) How "Bundle" is going to be done. Which of the three proposals do we really believe in. Note that direction of 1) will affect how commonly required the usage of "Bundle" will be. Thus affect the trade-off concerns. 3) What is common relations exist between concepts in WebRTC, CLUE and other multi-media communication contexts that needs to be identified and signalled and at what scopes. This influences the solution for MediaStream identities, our SRCNAME proposal in AVTEXT and CLUE work. There are a number of commonalities here that should be considered. > > 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. Please do, the more informed everyone is, the better. > > BTW: will these drafts be MMUSIC drafts or RTCweb? > I don't know . I think ours is likely MMUSIC. I can't answer for the other contributions I expect. I guess the important is that all contributions are announced to the relevant WGs. Cheers Magnus Westerlund ---------------------------------------------------------------------- Multimedia Technologies, Ericsson Research EAB/TVM ---------------------------------------------------------------------- Ericsson AB | Phone +46 10 7148287 Färögatan 6 | Mobile +46 73 0949079 SE-164 80 Stockholm, Sweden| mailto: magnus.westerlund@ericsson.com ----------------------------------------------------------------------
- [MMUSIC] Proposed agenda for the joint MMUSIC/RTC… Ted Hardie
- Re: [MMUSIC] Proposed agenda for the joint MMUSIC… Harald Alvestrand
- Re: [MMUSIC] Proposed agenda for the joint MMUSIC… Emil Ivov
- Re: [MMUSIC] Proposed agenda for the joint MMUSIC… Roni Even
- Re: [MMUSIC] Proposed agenda for the joint MMUSIC… Magnus Westerlund
- Re: [MMUSIC] Proposed agenda for the joint MMUSIC… Andrew Allen
- Re: [MMUSIC] Proposed agenda for the joint MMUSIC… Roni Even
- Re: [MMUSIC] Proposed agenda for the joint MMUSIC… Magnus Westerlund
- Re: [MMUSIC] Proposed agenda for the joint MMUSIC… Roni Even