Re: [XCON] Heads up: draft-lennox-mmusic-sdp-source-selection-00

Hi Jonathan,

interesting work, indeed.

As to the points you are raising:

> So my questions to the group are twofold.  First, is this a reasonable use
> of the conference event packages' <src-id> element?

I think it is.

> And more fundamentally,
> are there reasons to try to solve this problem CCMP rather than in SDP?

I don't see a use case for CCMP related to this.

Cheers,

Simon

I think that the

Quoting lennox@cs.columbia.edu:

> Hello, all --
>
> As I presented in Stockholm, I've published the Internet-Draft
> draft-lennox-mmusic-sdp-source-selection-00, which may be of interest to the
> XCON community.
>
> (Note: Vidyo has potential IPR on this draft; see
> <https://datatracker.ietf.org/ipr/1170/>.)
>
> The draft is based on a conference architecture where a conference server
> sends multiple (unmixed) streams to the conference participants, using RTP
> SSRC multiplexing.  The draft defines an SDP-based mechanism to allow
> participants to explicitly request specific of these media streams, along
> with parameters for how they should be received (resolution, frame rate,
> priority).
>
> The XCON relevance is that, while it's possible to list all available
> sources in SDP, it's not very efficient, since SDP doesn't have partial
> notifications.  Thus, the draft recommends that if a conference event
> package is running in parallel (whether it's the XCON or SIPPING packages),
> the event package, rather than SDP, should be used to notify particpants of
> the available sources.
>
> So my questions to the group are twofold.  First, is this a reasonable use
> of the conference event packages' <src-id> element?  And more fundamentally,
> are there reasons to try to solve this problem CCMP rather than in SDP?
>
> --
> Jonathan Lennox
> lennox@cs.columbia.edu / jonathan@vidyo.com
> _______________________________________________
> XCON mailing list
> XCON@ietf.org
> https://www.ietf.org/mailman/listinfo/xcon
>

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                     Simon Pietro Romano
               Universita' di Napoli Federico II
                  Computer Science Department
         Phone: +39 081 7683823 -- Fax: +39 081 7684219
                 e-mail: spromano@unina.it

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