[FFmpeg-devel] FFmpeg 0.7.5 is very much slower than FFmpeg 0.7 for decoding
michaelni at gmx.at
Sun Oct 2 09:02:23 CEST 2011
On Sun, Oct 02, 2011 at 08:50:20AM +0200, Michael Niedermayer wrote:
> On Sat, Oct 01, 2011 at 09:22:27PM -0700, Unga wrote:
> > Hi all
> > The FFmpeg 0.7.5 is very much slower than FFmpeg 0.7 for decoding.
> > I'm playing 720p and 1080p vp8 and h.264 videos.
> > With FFmpeg 0.7, 720p averages CPU usage to 20%. With FFmpeg 0.7.5, it shoot up to 100%!
> > With FFmpeg 0.7, 1080p averages CPU usage to 70%. With FFmpeg 0.7.5, it shoot up to 105%!
> > Any ideas? I can try and let know if there are improvements.
> we need a reproduceable bug report
> 1. what are you doing, what tool, what commandline what output, ..
> 2. how do you meassure the difference
Also heres a quick test
decoding a random 1920x1038 H.264 with ffmpeg ... -f null
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Avoid a single point of failure, be that a person or equipment.
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