[vorbis-dev] Re: Major quality decrease in RC3 compared to RC2

[Moritz Grimm]

Kenji Rikitake wrote:
> I'm nothing against VBR and I welcome the flexibility of Vorbis, though
> I'd be rather glad if you have a brief conversion table of the average
> output bitrate and the quality factor.  Bitrate is still an effective

Then
http://www.lammah.com/~xercist/vorbis/qual_vs_bitrate.png
might be what you're looking for. The nominal bitrate of VBR .ogg files
is a simple hint where average music will hover around in the end, but
very complex or simple audio can turn out quite differently. q0 is
nominally 64kbps, q1 is 80kbps, q2 is 96kbps, 112, 128, 160, 192, etc. I
don't remember the other values.

I suggest to rather look at a quality level that is transparent to you
than the bitrate - rc3's quality has improved a lot, and it's a waste of
diskspace to measure quality with size. Some people seem to think that
something CANNOT sound good if it's below a certain bitrate (that's an
MP3 derelict), which also was an pro-CBR argument. *wow* :) You just
have to start from scratch to figure out what sounds good enough for
you...

<p>Moritz


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