[vorbis] Vorbis rate and bitrate.

Nicu Pavel npavel at ituner.com
Tue Apr 9 10:59:06 PDT 2002

Jack Moffitt wrote:
>>I want to encode at 64kbps at a 22050 rate ... this is not possible ... why?
>>For me it seems a waste of cpu to encode at 64kbps with 44100 sample 
>>rate (of course I might be wrong :).
>>I saw in the vorbisenc.c that aprox_bitrate_to_vbr returns -1 to every 
>>sample rate that is not > 42000 ... is this safe to change ?
> Whether you encode at 22.05kHz or 44.1kHz is almost irrelevant.  Vorbis
> will lowpass appropriately in either case.  The quality difference
> should be negligible.
> Unfortunately the case here is that you are just doing it wrong :)  You
> are trying to used the bitrate management modes instead of the normal
> VBR ones.  If you use -q0 instead of -b64 you'll get the results you
> want.

Thanks all for quick reply ...
It works ok now ...
But why this limitation for CBR mode ?


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