[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."
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 194 bytes
Desc: not available
URL: <http://mailman.videolan.org/pipermail/vlc-devel/attachments/20080129/39c795b7/attachment.sig>


More information about the vlc-devel mailing list