[Ffmpeg-devel] X264 ratecontrol wraper

Michael Niedermayer michaelni
Tue Mar 14 12:11:36 CET 2006


On Mon, Mar 13, 2006 at 10:30:58PM +0000, M?ns Rullg?rd wrote:
> Michael Niedermayer <michaelni at gmx.at> writes:
> > Hi
> >
> > is anyone interrested in writing a ratecontrol wraper for
> > ffmpeg-x264 similar to ffmpeg-xvid so all our codecs could use the
> > x264 rc code?
> The problem I see here is with the different quantizer range and
> qp/bitrate relationship.  Do you have a good mapping of the H.264 qp
> onto an equivalent mpeg2/4 quantizer?

hmm doesnt the h.264 spec contain something like that and the qp2qscale/
qscale2qp functions in x264 look like they might do the trick ...



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