[Mplayer-users] Re: Brightness jump with ffmpeg

[Anssi Saari]

On Wed, Jul 25, 2001 at 05:56:33PM +0200, Arpi wrote:
> Hi,
> 
> > I have noticed a curious jump in brightness in some videos when using the
> > ffmpeg divx codec. I have uploaded one such clip (brightness_problem.avi)
> > to mplayerhq.hu:/MPlayer/incoming. In the clip, camera pans to the left
> > and a desk becomes visible with some papers on it. At the next keyframe,
> > 10s into the clip, the brightness of those papers jump noticeably. It
> > doesn't happen using the Windows divx codec. Maybe it's a rounding
> > problem?
> > 
> 
> yes, it's known. i've read it on ffmpeg list some days ago.
> but Gerard don't know how to fix it, because all rounding stuff is
> correct, checked many times.
> 
> is it ok with divx4 ?

No, similar problem, except that the papers are a little reddish in color.
BTW, am I supposed to be able to use ffdivx if divx4 support is compiled
in? I get a signal 11 in that case.


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