Home/Speed Change Video

Free · runs in your browser · no watermarks

Speed up or slow down
video playback.

Create fast-motion or slow-motion video clips. Speed up long demo recordings by 2x or slow down sports clips to 0.5x with pitch-adjusted audio.

Original duration

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New duration

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Speed factor

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🛡️ Private Local Video Processing: Your video is processed directly inside your browser’s memory and is never uploaded anywhere.

Adjust Video Speed

Upload a video and choose your target playback speed multiplier.

Drop a video here, or click to browse

MP4 · WebM · MOV · AVI · MKV

Playback Speed

How it works

Upload your video. Select any video file.
Select speed. Choose 2.0x for fast-forward or 0.5x for slow-mo.
Process & Download. The FFmpeg engine adjusts both video PTS timestamps and audio tempo simultaneously.

Common questions

How does audio tempo adjustment work?

We apply FFmpeg's `atempo` filter alongside `setpts`. This speeds up or slows down the soundtrack while preserving natural pitch.