[vorbis-dev] RFC draft for Vorbis over RTP

[Monty]

On Wed, May 26, 2004 at 04:06:14PM -0700, Ralph Giles wrote:
> 
> On Wed, May 26, 2004 at 11:02:00AM +0200, Jack Moffitt wrote:
> > Why don't we just say that for transmission of RTP, a single set of
> > codecs valid for the entire transmission is required?
> 
> This certainly simplifies things in practice with in-band headers 
> or header request over http. Seems a bit of a wash if there's a separate 
> header stream.
> 
> Outside of using a separate metadata stream (which would need to be 
> separate from the header stream, really. otherwise how do you know when 
> it's changed?) I think allowing in-band comment packets anywhere in the 
> rtp stream makes a lot of sense. The only reason we don't allow this in 
> Ogg Vorbis is seeking, which isn't relevent to RTP. You can easily 
> retransmit without adding much to the bitrate, and it's the one bit of 
> info you can't reasonably cache. Furthermore, it's much simpler for 
> clients if than having to support a separate access method just to 
> change the current artist/title.

FWIW, it was a purely arbitrary decision that diallowed in-band comments
in Vorbis to begin with.  The packets are properly marked as to type
and mixing comments in wherever you want won't even break any current
software (although it won't know to do anything with the interspersed
comments).

Monty
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