[vorbis] Ogg bitstream spec question

[Michael Smith]

On Sunday 27 April 2003 11:06, Aaron Knauf wrote:
> Hi,
>
> Is it expected that an Ogg logical bitstream might logically serve as
> the physical bitstream from which other logical bitstreams might be
> demuxed?  I am not sure that I really see the point of doing this, but
> it would certainly be possible within the current spec.

Do you mean something like having an ogg packet which contains an ogg page for 
some sub-stream or something like that? Of course, the spec doesn't disallow 
this, since it doesn't say anything about the contents of the packets, but it 
certainly doesn't encourage it, and I see no reason why you would do so. 

Or maybe you mean something else, and just failed to express your meaning.

>
> The trouble is that there are any number of ways to do the low-level
> muxing of several streams into one logical stream, with respect to
> paging and packetization.  This makes it harder to write generic code
> for performing this muxing/demuxing.
>
> If some basic packetization/paging rules were defined, such a having one
> page encoded into one packet it would allow for some useful coding
> shortcuts to be taken during the decode process.
>

We're not going to change the bitstream format so that your implementation can 
be slightly more convenient. The format is fixed (though future versions may 
differ, of course).

Mike

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