[gst-devel] High CPU usage in ffmpegcolorspace

[Julien Isorce]

Could someone try to replace the videotestsrc by v4l2src ? with the exact
same pipeline.

(on win32, with the dshwovideosrc there is the same behaviour)

Thx.

2008/6/16 Tim Müller <t.i.m at zen.co.uk>:

> > > Is it normal that this pipeline :
> > > gst-launch-0.10 videotestsrc ! "video/x-raw-yuv, format=(fourcc)YUY2,
> > > width=720, height=576, framerate=(fraction)25/1" ! ffmpegcolorspace !
> > > video/x-raw-rgb, bpp=32, depth=24 ! fakesink sync=1
> > > uses 50% of the CPU on a Pentium4 2.80GHz, 2 Go RAM ?
> > >
> > > Please someone can confirm that and say us your CPU ?
> >
> > 24% according to top on an Intel(R) Core(TM)2 Duo CPU T7100 @ 1.80GHz.
> > Which would equate to filling up half a Core. Yes, ffmpegcolorspace is
> > slow, patches welcome.
>
> FWIW, videotestsrc seems to be responsible for about half the cpu cycles
> burnt in this case (also see [1]).
>
>  Cheers
>  -Tim
>
> [1] http://bugzilla.gnome.org/show_bug.cgi?id=500152
>
>
>
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