[vorbis] Where's the tool to do .ogg bitrate "peeling"?
Merijn Vogel
merijnv at sci.kun.nl
Wed Feb 13 05:32:11 PST 2002
> > For instance, has anyone "manually" peeled a file, so to speak,
> > and been able to examine the quality of, say, a ~192 kbps encoded wav
> > peeled to an 80 kbps file compared to the same wav encoded to 80kbps?
>
> It's been my understanding that they should be of equal quality.
>
> However, I may very well be wrong in this. If so, I hope someone
> corrects :)
IIRC the relation is : ... almost entirely not unlike ...
(from the hitchhiker's guide to the universe)
More seriously, I cannot imagine that the encoder could pack all information
about all decisions it would make for, let's say, -q3 into a -q5 stream. Let
alone for more arbitrary peels...
I would expect something as a target-quality-setting for peeling, like:
oggpeeler -q1 input.ogg ouput.ogg
<p><p>Merijn
--
ABX proved I could better distuingish lossy encoders from originals than
other sound-artefacts. Hm, tuned my ears a bit too much with ogg-vorbis ;-).
(I think it was stereo-artefacts and pre-echo that did the trick)
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