[x264-devel] Re: x264 :: overflow problem, resulting in artifacts

[Rui Campos]

In a test I'm doing right now, increasing the keyframe to 40 or 50
doesn't give these errors.

But I will look on the ffmpeg-devel list for this.


Thanks

-- Rui --

On Mon, 2006-06-19 at 16:29 -0700, Loren Merritt wrote:
> On Mon, 19 Jun 2006, Rui Campos wrote:
> 
> > I was hoping someone could help me out with x264, ffmpeg and getting it
> > working 100% with Blender 3D.
> >
> > Right now Peter Schaile has integrated ffmpeg into Blender 3D and added
> > an option for x264 export.
> >
> > Everything seems to work fine, but I get an overflow error after around
> > 130+ frames are processed. And after that the error starts to appear
> > more often. The main problem is that the encoded frames have artifacts.
> >
> > The output looks like : OVERFLOW levelcode=xxxx
> 
> It means ffmpeg's defaults are totally screwed up.
> See the archives of the ffmpeg-devel list for all the flags you need to 
> specify in order to get sane settings.
> 
> In paticular, this error message is caused by combining CAVLC with QP=2.
> 
> --Loren Merritt
> 

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