yum transaction check error

[Paul Smith]

Dear All

I have just upgraded from FC5 to FC6 and now when I run 'yum update',
I get the following error:

Transaction Check Error:   file /usr/include/postproc/postprocess.h
conflicts between attempted installs of
ffmpeg-libpostproc-0.4.9-0.7.20060918.fc6 and
ffmpeg-devel-0.4.9-0.24.20060817.lvn6
  file /usr/lib/libpostproc.so conflicts between attempted installs of
ffmpeg-libpostproc-0.4.9-0.7.20060918.fc6 and
ffmpeg-devel-0.4.9-0.24.20060817.lvn6
  file /usr/lib/libpostproc.so.51 conflicts between attempted installs
of ffmpeg-libpostproc-0.4.9-0.7.20060918.fc6 and
ffmpeg-0.4.9-0.24.20060817.lvn6
  file /usr/lib/pkgconfig/libpostproc.pc conflicts between attempted
installs of ffmpeg-libpostproc-0.4.9-0.7.20060918.fc6 and
ffmpeg-devel-0.4.9-0.24.20060817.lvn6

Any ideas?

Thanks in advance,

Paul