[xiph-rtp] Re: new RTP development list

[Ralph Giles]

On Wed, Oct 20, 2004 at 05:27:24PM +0200, Tor-Einar Jarnbjo wrote:

> - Allow or recommend a separate meta data RTP stream (CMML based 
> or whatever) to minimize the need for chaining. At the moment, Ogg 
> chaining is mostly used to allow pseudo in-stream comment headers.

Yes.

> - Define a separate data source for the setup header in the SDP descriptor.
> For unicast streams, this may just as well be a HTTP URL, for multicast,
> a separate RTP stream should be continuously streaming the setup 
> header, allowing the client to join and leave the multicast session 
> as required.

Hmm. I suppose we have to do that for multicast. This would just be
the stream headers in RTP packets, repeating periodically? The separate
multicast stream idea applies to metadata update as well.

> I already implemented a rough proof-of-concept client using this 
> approach for unicast streams. I didn't add RTSP or SDP support, so 
> the client is taking some data from a provided configuration file,
> some data is exchanged with the server using a proprietary TCP based 
> protocol for session control and some stream attributes are hard 
> coded in the client, but at least the RTP stream seem to work and 
> the setup header is loaded from the configured HTTP URL. If you're 
> interested, you can take a look here:
> 
> http://www.j-ogg.de/rtp/index.html

Ah, thanks for the link! I've added it to the wiki page.

 -r