[FFmpeg-user] Extract image every x frames?

Nicolas George nicolas.george at normalesup.org
Tue Aug 7 00:12:40 CEST 2012

Le decadi 20 thermidor, an CCXX, Peter B. a écrit :
> It outputs frame 0 (correct), frame #1500 (correct) and then infinitely
> write frame #1500 again and again... :(
> The duration of the source video is 45000 frames at 25fps. The command
> below exported 100 frames (should have been 30).
> Anyone got any hint why this is happening?

See the note on "-vsync" in the example for the "tile" filter, this is
probably the same phenomenon.


  Nicolas George
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