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

[Loren Merritt]

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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