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I have an ffmpeg newbie question, I am extracting keyframes from streams using this command: ffmpeg -skip_frame nokey -i {0} -vsync 0 -r 30 -f image2 keyframe-%09d.jpeg

However, instead of an auto-incrementing counter, I would like to save by frame pts. for example keyframe-0003456.jpg as the pts. How can I mod the command?

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Use

ffmpeg -copyts -skip_frame nokey -i {0} -vsync 0 -r 1000 -f image2 -frame_pts 1 keyframe-%09d.jpeg

This will print the pts as milliseconds in the filename.

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