[MPlayer-cvslog] CVS: main/libmpcodecs ve_lavc.c,1.111,1.112

[Guillaume Poirier]

Hi,

On Thu, 3 Mar 2005 11:45:05 -0500, D Richard Felker III
<dalias at aerifal.cx> wrote:
> On Thu, Mar 03, 2005 at 10:37:27AM +0100, Guillaume Poirier wrote:
> > > (BTW, I recommend vqcomp=.6 or .7 in lavc too, in which case CQP 1st
> > > pass becomes good there too.)
> >
> > That's interesting... Taking other people's experience into
> > consideration, I always set vqcomp=.6 too, but I never understood what
> > the option was really doing for its documentation is very terse.
> > Here's what it reads:
> > vqcomp=<value>
> >        Quantizer compression, depends upon vrc_eq (pass 1/ 2) (default: 0.5).
> 
> Read the info on vrc_eq and it should make sense.

Ok, I'll try to explain what I  understood, and you'll tell me if I'm right:
tex^qComp being the default rate control equation, the greater vqcomp
is, the more constant is the distribution of quants, and the smaller
vqcomp is, the more constant is the bitrate distribution?

Anyway, whether I'm right or wrong, I do think the doc should be more
explicit...

Regards,
Guillaume