[vorbis-dev] audio/vorbis media type registration

[Chris Hanson]

At 2:55 AM +0200 5/15/01, Segher Boessenkool wrote:
>It is movie structure, but a lot finer grained than, for example, Quicktime
>uses; the container (i.e., Ogg) splits everything into packets, not into
>"media" or "channels" or "tracks" or whatever.

QuickTime splits everything into "atoms", but that's not what you 
work with at the API level.  (Or even in many cases at the CODEC 
level.)

I asked a while ago whether Ogg can support QuickTime-like 
abstraction or whether it's joined at the hip to its CODECs.  From 
your statements, it sounds like the latter is the case.  In other 
words, I can't open an arbitrary Ogg file, find all its audio tracks, 
and manipulate or play them *without* having to know in advance that 
they're Vorbis tracks (or that Vorbis tracks are audio tracks, as are 
Squish tracks, as are raw PCM tracks, as are...).

It'd be nice if this was possible either in a standard higher-level 
API or in the file format itself.  (Though supporting it in the file 
format may not be necessary with the proper API support.)

   -- Chris


-- 
Chris Hanson <cmh at bDistributed.com>
bDistributed.com: Making Business Distributed

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