Bug#567725: mplayer: gets SIGILL on Pentium II when playing an MPEG video with -vo caca

Sun Jan 31 11:18:29 UTC 2010

On Sun, Jan 31, 2010 at 09:32:05AM +0100, Reinhard Tartler wrote:
> libswscale uses MMX2:
> 
> > -- The GDB backtrace
> > #0  0xb620657d in yuv420_rgb24_MMX2 (c=0x8601ec0, src=0xbfffcb70, srcStride=0xbfffcb40,
> >     srcSliceY=0, srcSliceH=16, dst=0x862c944, dstStride=0xbfffcb50)
> >     at /build/buildd-ffmpeg_0.5+svn20090706-5-i386-gCmK4F/ffmpeg-0.5+svn20090706/libswscale/yuv2rgb_template.c:292
> 
> This is the same bug as
> https://bugs.launchpad.net/ubuntu/+source/ffmpeg/+bug/386397
> 
> As easy workaround, you can move /usr/lib/i686/cmov/libswscale.so.0 out
> of the way.
> 
> Not sure how to fix this properly.

By doing what the first comment in that bug report says?
Compile FFmpeg with --enable-runtime-cpudetection