[gstreamer-bugs] [Bug 564777] performance issue with ffmpegcolorspace and liboil

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: HEAD CVS




------- Comment #6 from Brian Cameron  2008-12-17 15:36 UTC -------

Edward:

Yes, right, thanks for putting this report in the right category.

Note I also filed an enhancement request for liboil so that those functions
hopefully get more attention.  The lack of tuned liboil functions making use of
hardware acceleration is probably more of a bug than this bug report.  Refer
here:

   http://bugs.freedesktop.org/show_bug.cgi?id=19113

This issue was reported to Sun by Che Cristo, who said that totem is so slow
playing video that it tends to stutter due to using high CPU.  He said using
VLC does not have this issue, and VLC only tends to use about 30% of CPU.  I am
guessing this is because VLC has better hardware acceleration support.  This
seems to be confirmed by our performance analysis which does seem to indicate a
lot of time spent in these 3 functions.  All of which look like the sort of
functions which would lend themselves well to hardware acceleration.

This issue is probably more of an enhancement request, so I understand if you
close it.  However, I'd think that the GStreamer team would want to focus on
improving performance of known & identified functions which cause performance
issue when playing video with common tools.  Or at least keep track of them
somewhere.


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