https://bugzilla.wikimedia.org/show_bug.cgi?id=23160

Derk-Jan Hartman <[email protected]> changed:

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--- Comment #1 from Derk-Jan Hartman <[email protected]> 2010-04-12 01:26:48 
CEST ---
The empty thumbs are due to the fact that there are no key frames following the
seek point (midway file). We should probably always start at frame 0 when a
movie is under 10seconds.

The other issue is of a similar nature and also related to keyframes.

What triggered this behavior, i'm not sure of, but most likely ffmpeg was
upgraded on the scalers. I have asked Roan, and the servers currently run
r11872+debian_3:0.svn20080206-12ubuntu

If someone could run the following on a scaling server and extract the debug
info from ffmpeg please. That might help:

ffmpeg -ss 9.5 -i
/mnt/upload6/wikipedia/commons/b/bd/Translational_motion_gif.ogv -f mjpeg -an
-vframes 1 ./test.jpg

I made an educated guess at the path. Might not be 100% correct.

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