Re: [MMUSIC] How does mmt grouping work with multiple streams of the same type?

Christer Holmberg <christer.holmberg@ericsson.com> Fri, 12 October 2012 11:06 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Harald Alvestrand <harald@alvestrand.no>
Date: Fri, 12 Oct 2012 13:06:44 +0200
Thread-Topic: AW: AW: AW: How does mmt grouping work with multiple streams of the same type?
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Cc: Jonathan Lennox <jonathan@vidyo.com>, mmusic WG <mmusic@ietf.org>
Subject: Re: [MMUSIC] How does mmt grouping work with multiple streams of the same type?
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Hi,

>> Then, you will use the SSRC attribute to identify the streams. But, we 
>> do need to define how to associate SSRCs with media types and/or 
>> payload types. In one of your e-mails, you suggested to extend the 
>> mmtype attribute. That's for sure one possibility. 
>
> If you need to know this before you start getting media, we need signalling.
>
> Otherwise, we just look at the PT field and the SSRC field in the incoming packets.

Correct.

I guess we can add it as an open issue whether one needs to be able to signal it.

But, again, the possibility to associate PTs with SSRCs is not BUNDLE specific. You may want it also when you have multiple streams (same media type) associated with a single m- line.

Regards,

Christer