[xiph-rtp] Re: [Speex-dev] new RTP development list

[Tor-Einar Jarnbjo]

Aaron Colwell wrote:

> Why not just pick a master sample rate with sufficient resolution to
> acommodate all the chains.
>
How do you expect the sample rate of each chained stream to be 
signalled? In-band header messages are not the solution, as you cannot 
guarantee the reception.

> I think creating this sort of binding between RTSP and RTP is a large 
> burden
> and defeats the purpose of having the 2 protocols decoupled to begin 
> with.
> With the solution proposed above, you wouldn't need this anyways.
>

Well, you need some sort of protocol in addition to RTP to setup and 
control the session. Standalone SDP descriptors can only be used for 
multicast streams. There are several usable alternatives, RTSP is one of 
them and absolutely no necessity for this to work. AFAIK, other session 
setup/control protocols also have the possibility to push new SDP 
descriptors to the client if necessary.

Tor