1080p decoding is very CPU intensive task. It is simply IMPOSSIBLE that
it would only use 10% of your CPU. Indeed, I can "reproduce" the
problem: my 2,8 GHz CPU is totally saturated and VLC is forced to
discard most frames. This is clearly visible with: 'vlc -vv'

I guess WMP and Qt use video decoding hardware acceleration from the
graphical adapter, and I doubt there is any solution to decoding HD AVC
without hardware acceleration. You can also try VLC on Windows and see
what happens.

** Changed in: vlc (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/697279

Title:
  Jerky playback of mov file in totem

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