[Ffmpeg-devel] [BUG] H.264 + AltiVec == heavy artefacts

Diego Biurrun diego
Fri Sep 23 02:10:39 CEST 2005


Have a look at


it's a screenshot of MPlayer playing


and it shows really bad artefacts, black blocks all over the image.  Any
other H.264 movie will do as well.  ffplay has the same issues, which go
away if I compile with --disable-altivec.

I'm trying to find out which function exactly is causing the problems
but I haven't quite figured out yet how h264.c falls back to AltiVec or
other CPU-specific optimizations (yes, I'm lame and I know all about
it).  Any helpful pointers would be appreciated.


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