Re: [clue] comment on draft-lennox-clue-rtp-usage-0

[Paul Kyzivat <[e-mail]>]

On 2/13/12 6:21 AM, Roni Even wrote:
> Hi,
>
> My view is that there are two separate problems that the draft discusses:
>
> 1.The co-relation between the media capture and the codec information in
> the offer answer
>
> 2.Multiplexing multiple media streams.
>
> I think that the second problem is addressed in
> http://tools.ietf.org/html/draft-holmberg-mmusic-sdp-bundle-negotiation-00

> As for the mapping I have a proposal to use a capture set group in the
> SDP for the ampping

Using that solution means that there will be one or more lines in the 
SDP for each capture that *might* be carried. In the case of a large 
conference and switched streams this could potentially be hundreds of 
captures. I expect that having an SDP with hundreds of m-lines will 
likely be considered unacceptable.

I presume you are assuming somehow the number of m-lines need not be so 
great. I guess that means that either its limited to conferences with 
fewer total captures, or else that the number of captures described in 
SDP can be very limited compared to the total number that exist.

Can you elaborate your thinking?

	Thanks,
	Paul