[vorbis] Encoding speed reports (was: Choosing a processor)

[Beni Cherniavsky]

On Tue, 29 May 2001, Segher Boessenkool wrote:

> > Keeping it on topic, Oggenc encodes at 4.2 times normal
> > speed on my 1GHz Athlon.
> 
> 
> It does that on a G4 500MHz as well :-)
> 
> Ciao,
> 
> Segher
> 
For clarity, all reports of encoding speed should indicate what and how
was encoded, or a default standard should be agreed upon:
- The encoding time is proportional to the number of channels (with same
  bitrate per channel).  Mono is the natural default but maybe stereo is
  better as people frequenlty rip CDs.
- The "X times normal speed" measure should also be propotional to the
  sampling rate.  44100 is the obvious default.
- Bits per sample hardly affect anything (unless the HD is the
  bottleneck).
- Does the target bitrate (encoder mode) affect the speed?

If these are not agreed upon nor specified in speed reports, the data is
meaningless.


-- 
Beni Cherniavsky <cben at crosswinds.net>
                 (also scben at t2,cben at tx in Technion)

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