Re: [MMUSIC] Displaying side by side video streams draft-jennings-mmusic-adjacent-grouping
Ingemar Johansson S <ingemar.s.johansson@ericsson.com> Mon, 04 October 2010 06:38 UTC
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From: Ingemar Johansson S <ingemar.s.johansson@ericsson.com>
To: Cullen Jennings <fluffy@cisco.com>
Date: Mon, 04 Oct 2010 08:38:51 +0200
Thread-Topic: [MMUSIC] Displaying side by side video streams draft-jennings-mmusic-adjacent-grouping
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Cc: MMUSIC WG <mmusic@ietf.org>
Subject: Re: [MMUSIC] Displaying side by side video streams draft-jennings-mmusic-adjacent-grouping
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Hi Thanks for the clarification. I agree that a full fledged solution for Telepresence will likely need some more detail (location of mic, loudspeakers, cameras...). I am not sure that SDP is the right place for this information but I guess future work will show.. /Ingeamr > -----Original Message----- > From: Cullen Jennings [mailto:fluffy@cisco.com] > Sent: den 29 september 2010 22:17 > To: Ingemar Johansson S > Cc: MMUSIC WG > Subject: Re: [MMUSIC] Displaying side by side video streams > draft-jennings-mmusic-adjacent-grouping > > > This was largely motivated from wall of screens for things > like video advertising, arrays of airport monitors with TV > updates, display on walls of surveillance screens and so on. > I had been waiting to see where the telepresence work will go > but I think that is a somewhat different problem. For > example, the telepresence people would like to be able to do > things like understand where camera really are relative to > viewers and the field of view of the cameras so that they can > display a speaker uh, "life size". That requires a far more > fine graining approach to position that saying this stream > goes on the left monitor and this one the right. I think > there is a reasonable good document on the some of the > telepresence uses cases. I used the word telepresence in this > document in the case where a telepresence system was > interoperating with a 2 screen video conferencing system. I > just used telepresence to have a different word for the > systems at each end to make it less confusing to to right but > that was somewhat a mistake. I changed the latest one to try > and be clear this is not taking on the telepresence problem > space and removed telepresence from the document. > > However, if you got two side by side camera, and I've got two > side by side screens, this can get the right camera on the > right screen, so even though this does not solve all the > things for a telepresence system, it seems like a tool that > would work fine for solving some of the multiscreen video > conferencing issues. > > > On Sep 23, 2010, at 12:59 AM, Ingemar Johansson S wrote: > > > Hi Cullen > > > > I guess your input is spurred by the emerging interest in > Telepresence. > > What I would believe is good is to work on a document that > outlines the requirements. For instance I miss a general view > on how e.g an MCU should work here. From that work I believe > it will be easier to define extensions to SDP. > > Question is if this work should wait for the Telepresence > WG (if it gets an OK) or if work should start already in MMUSIC ? > > > > FYI we earlier submitted a draft around grouping of simultaneous > > streams > > > http://tools.ietf.org/id/draft-johansson-mmusic-grouping-simultaneous- > > 00.txt The use case here is that an endpoint sents two > represenations > > of the same media (e.g high-res and low-res video), an MCU > then picks the media based on for instance speech activiy. > This is particularly useful for the case that opposite > endpoints have only one screen. > > Since the submission we did not have time for further work > in this area but it is possible that we pick up this again. > > > > /Ingemar > > > > > > > > > > Message: 1 > > > Date: Tue, 21 Sep 2010 13:49:11 -0600 > > > From: Cullen Jennings <fluffy@cisco.com> > > > Subject: [MMUSIC] Displaying side by side video streams > > > draft-jennings-mmusic-adjacent-grouping > > > To: MMUSIC WG <mmusic@ietf.org> > > > Message-ID: <440B4A6C-69BE-499B-8ADB-F52BF590D559@cisco.com> > > > Content-Type: text/plain; charset=us-ascii > > > > > > > > > I just submitted a draft on using the SDP grouping framework to > > > indicate when multiple media streams should be rendered side by > > > side. It a pretty trivial draft but I'd love to get some > comments on > > > it. > > > > > > > http://www.ietf.org/id/draft-jennings-mmusic-adjacent-grouping-00.tx > > > t > > > > > > Thanks, Cullen > > > > > > > > > > > > > > > >
- Re: [MMUSIC] Displaying side by side video stream… Peter Musgrave
- [MMUSIC] Displaying side by side video streams dr… Cullen Jennings
- Re: [MMUSIC] Displaying side by side video stream… Roni Even
- Re: [MMUSIC] Displaying side by side video stream… Ingemar Johansson S
- Re: [MMUSIC] Displaying side by side video stream… Allyn Romanow (allyn)
- Re: [MMUSIC] Displaying side by side video stream… Cullen Jennings
- Re: [MMUSIC] Displaying side by side video stream… Cullen Jennings
- Re: [MMUSIC] Displaying side by side video stream… Cullen Jennings
- Re: [MMUSIC] Displaying side by side video stream… Cullen Jennings
- Re: [MMUSIC] Displaying side by side video stream… Ingemar Johansson S