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

[Diego Biurrun]

On Sat, Oct 01, 2005 at 09:33:18AM +0200, Romain Dolbeau wrote:
> Diego Biurrun <diego at biurrun.de> wrote:
> 
> > If I comment out
> > 
> >   dspfunc(put_h264_qpel, 0, 16);
> >   dspfunc(avg_h264_qpel, 0, 16);
> > 
> > in libavcodec/dsputil_h264_altivec.c lines 255 and 256 the artifacts go
> > away.
> 
> Unfortunately, this is not very specific ; these two are macros that
> each enable half the motion compensation functions...

OK, I'll try to narrow it down a bit more.

> Is there a short sample available somewhere that exhibit the problem ? I
> a bit buried in work ATM, but I'll try my best to identify the problem
> newt week if I can spare the time.

Any H.264 sample will exhibit the problem and be completely unwatchable.

Diego