[mythtv-users] x264 suttering

jedi jedi at mishnet.org
Tue Feb 16 14:45:43 UTC 2010

On Tue, Feb 16, 2010 at 06:30:31AM -0800, Yan Seiner wrote:
> I have a system that's used to play back SD video.  No HD at all.
> The system has an Intel Atom 330 and intel graphics.
> When I play back lavc-encoded video, my CPU usage is about 30% and
> the video is perfectly fine.
> When I play back x264 material, the playback sutters.  Every few
> secons, the video pauses for a half a second.  I haven't been able
> to get at it to see logs or to see the CPU usage, so I can't provide
> much at this point.
> Is h264 material that much more CPU intensive to decode?

    Oh yes.

    Plus, the Atom is a really weak CPU in purely computational terms.

    Add to that the fact that the Intel GPU isn't going to take up enough
of the slack even if you had a Linux driver as good as the Windows ones.


    Run a transcode on the Atom box and compare it to your others.

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