> speed & reverse

4 commands for ffmpeg speed & reverse

// speed & reverse

4 commands

Double the playback speed

$ ffmpeg -i input.mp4 -vf "setpts=0.5*PTS" -af "atempo=2.0" output.mp4

Slow down to half speed

$ ffmpeg -i input.mp4 -vf "setpts=2.0*PTS" -af "atempo=0.5" output.mp4

Reverse a video

$ ffmpeg -i input.mp4 -vf reverse -af areverse output.mp4

Create a boomerang loop

$ ffmpeg -i input.mp4 -filter_complex "[0:v]reverse[r];[0:v][r]concat=n=2:v=1:a=0" output.mp4

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