Re: [MMUSIC] Thoughts on m= lines and media streams

Adam,

Thanks for writing this. A few thoughts about it:

1) Putting session-level attributes in the first m-line has problems if 
that m-line is rejected and others are accepted. Maybe this can be 
solved with some more text in a new draft. But it will likely have 
backward compatibility problems.

2) For option 2, when you talk about a single stream per m= section, 
exactly what do you mean? Do you mean a single SSRC? If so, is a=ssrc 
used to specify which one? Or do you mean that the m= section applies to 
one RTP stream at a time, but might (serially) apply to different SSRCs 
without new O/A exchanges?

I can possibly buy in to having as many m-lines as concurrently active 
RTP-streams. But having to exchange SDP when SSRCs change is hard to accept.

	Thanks,
	Paul

On 1/31/13 7:17 PM, Adam Roach wrote:
> Based on the conversations we've had so far, I've put together the
> following summary of my thoughts on the topic of whether we want to put
> multiple media streams in a single m= line.
>
> http://www.ietf.org/id/draft-roach-mmusic-mlines-00.txt
>
> Sorry for the relatively short lead time before next week's meeting -- I
> had meant to put this kind of summary together a week or two ago, but
> have been far busier than I anticipated.
>
> /a
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