[Vorbis] bitrate limits don't work with -q settings?

Monty xiphmont at xiph.org
Thu Dec 30 17:31:52 PST 2004




On Thu, Dec 30, 2004 at 06:56:05PM +0000, Sander Sweers wrote:
> Here are some more tests i did with various combinations.
> 
> oggenc -q 3 sinewave.flac -> Average bitrate: 69.1 kb/s
> oggenc -m 96 sinewave.flac -> Average bitrate: 96.9 kb/s
> oggenc -m 96 -q3 sinewave.flac -> Average bitrate: 69.1 kb/s
> oggenc -q 3 -m 360 sinewave.flac -> Average bitrate: 69.1 kb/s
> oggenc -m 96 -M 360 sinewave.flac ->  Average bitrate: 130.6 kb/s
> oggenc -q 3 -m 96 -M 360 sinewave.flac -> Average bitrate: 0.7 kb/s
> oggenc -q 3 -m 360 -M 360 sinewave.flac -> Average bitrate: 0.7 kb/s
> 
> The last ones are really weird? The file ony has one tick at the
> beginning an after that silence.
> 
> The issue however is when using a -q3 together with a -m 96 oggenc
> kind of ignores the -m 96. Is this normal?

Hrm, shouldn't be; you should be able to do cute things like that.  I
did test those combinations before committing the 1.1 release, I
wonder if something broke since then, or if I'm forgetting my own
option set.  I'll report back in a few :-)

Monty


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