[vorbis] Bit Rate Peeling Quality

[Daniel Schregenberger]

 ('binary' encoding is not supported, stored as-is)
Colin D Bennett wrote:

[...]
> >>There is no way, as far as I know, to go from ogg->ogg without 
> >>converting to uncompressed PCM audio in between.
> >>	
> >>
> >
> >There is a way. It's called peeling. The only issue is: there are currently
> >only a few "design studies" and no "real" programs to implement this. Just
read
> >the rest of this thread.
> >
> 
> Oh, sorry! I didn't realize that he meant _peeling_ from b.ogg -> c.ogg. 
> Jumping back and forth between threads, I forgot where I was. ;-)

No problem.

> Interesting though, I had always assumed that in peeling the peeled 
> (lower bitrate) file would be identical in quality to a file encoded 
> directly from the source at that bitrate. (This being the primary reason 
> I would be interested in peeling.) Is this technically possible?

This was the initial question of this thread. The answer was like "we don't
know exactly, but we suppose it to be a little less qualitative than a directly
encoded file". The tools that exist (somewhere) by now produce bad peeled
files, mostly cause the vorbis files need some restructurization to be easily
peelable, but this is no problem, since this restructurization can be done
lossless and very very fast.

-- Daniel

<p>"Yeah, but you're taking the universe out of context."

--- >8 ----
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