[vorbis] Speed!

Peter Schuller peter.schuller at infidyne.com
Thu Aug 1 16:57:43 PDT 2002



> I have a question, why is this procedure so slow, when I the same
> track.wav file, that I've encoded with oggenc and lame, with the
> same quality, then with oggenc it has taken 4:35 sec and with lame
> it has taken 1:49. Oggenc ist mor then 2 times slower. Is it
> possible with oggenc to encode a .wav file with 192 kbs, but a
> little bit faster???

oggenc is currently slower than the fastest mp3 encoders out there. It's
not that surprising - the mp3 encoders have had a long time to get
optimized for speed.

Also, I get the distinct impression from your post that you are equating
bitrate with quality. If this is true, I suggest you read a bit of the
docs on vorbis.com. The general idea is that Ogg Vorbis produces better
quality "per bit" than mp3. Bitrate just specifies the size; not
quality. Just FYI.

Plus, it is recommended to use quality based encoding (specyfing a
quality with the -q switch) rather than ABR (average bitrate, meaning
you specify a target bitrate with -b) because it produces better results.


-- 
/ Peter Schuller, InfiDyne Technologies HB

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