[vorbis-dev] Bride of vorbisfile questions

[Michael Smith]

On Thursday 18 December 2003 09:54, Joshua Haberman wrote:

> 2. the feature of the Ogg/Vorbis format that allows for sample accurate
> slicing of already-compressed data using granulepos can only be used at
> the beginning and end of a a logical bitstream.
>
> (2) is really unfortunate.  I really wish something resembling this had
> been included as part of the format:
>
> http://www.xiph.org/archives/vorbis-dev/199911/0008.html

That would be horribly inefficient, really. The granulepos feature is 
basically intended so that you can ensure that the output is the same length 
as the input - which is a nice little advantage over mp3. Although it can be 
used for all sorts of other things, that's not really the primary intent - 
and adding 2 extra offsets to every packet wouldn't exactly help compression.

Mike

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