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Speed Up Video with FFmpeg

Make a video faster while keeping audio in sync.

Command

Use this when

  • You want to make a video play at 2x speed.
  • You need audio to stay synchronized with the faster video.
  • You are creating a quick preview, timelapse, or shortened clip.

Customize it

A related tool is coming soon.

Parameter breakdown

setpts=0.5*PTS

Halves video presentation timestamps, making video play twice as fast.

atempo=2.0

Speeds audio up by 2x while preserving pitch reasonably well.

-map "[v]" -map "[a]"

Maps the filtered video and audio streams into the output.

Variants

Slow down to half speed

Speed up video only