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

["Stach, Thomas" <[e-mail]>]

Christer, Harald, Jonathan,

I have the impression that the draft-holmberg-mmusic-sdp-mmt-negotiation is based on Jonathan's proposal 
to have an explicit desrciption for the bundled streams as proposed in
http://www.ietf.org/mail-archive/web/mmusic/current/msg09454.html

Among other points the following is stated:
* The m=bundle is a complete description of an entirely separate m-line; if it's used, the other m-lines in the group are rejected and the information they carry is ignored.
I think this a desirable property

Now, consider a case were you have 4 streams, i.e. 4 m-lines (e.g. 2 audio and 2 video).
How would that be mapped to the m=anymedia line? 
How does mmt grouping work with multiple streams of the same type?

>From the currently proposed syntax for the m=anymedia line I cannot deduce that multiple audio or video streams are offered.
I would have to look into the "legacy" m-lines to recognize this.
In case that e.g. the video stream use different codecs, I could also learn that only from the legacy m-lines.

Regards
Thomas