Comment # 2 on bug 84519 from Lee Donaghy

If you're having problems playing back mpeg2 the XBMC devs recommend turning
off vdpau acceleration for mpeg2.
settings, video, acceleration. then untick 'Use MPEG-2 VDPAU', need to change
the settings level to expert to see it listed.
Not sure if the latest XBMC has this option or you might have to upgrade to
Kodi.