[vlc-devel] vlc: svn commit r24676 (ileoo)

Ilkka Ollakka ilkka.ollakka+vlc at oamk.fi
Tue Jan 29 14:24:24 CET 2008

On ti 29. tammikuuta 2008 15:18:31, Ilkka Ollakka wrote:
> On ti 29. tammikuuta 2008 13:34:21, Christophe Massiot wrote:
> > On Tue, Jan 29, 2008, Subversion daemon wrote:
> > > - if user requests certain bitrate, set defaults to qmax=51,qmin=10 if
> > >   user hasn't defined them otherwise. Should help normal user to get
> > >   bitrate he/she requests.
> > 
> > This is only suitable for MPEG-4, with MPEG-1/2 the quantizers are too
> > high.
> Is there somewhere any documentation about suitable quantizer-values on
> different codecs ?

I checked ffmpeg-sources, and seems that ffserver sets qmin=3, and
libavcodec doesn't have other checks on qmax/qmin other than 1<=x<=51.
So would qmin=3 be reasonable default in mpeg2 and mpeg4 case?

Ilkka Ollakka
"Biology is the only science in which multiplication means the same
thing as division."
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