Video Speed Changer
Speed up or slow down a video from 0.25× to 4× while keeping the audio pitch natural. Runs entirely in your browser.
No uploads
How to use Video Speed Changer
- 1Open Video Speed Changer. It runs in your browser, no sign-up.
- 2Type or paste your input.
- 3Copy or download the result.
Questions
Does the voice sound like a chipmunk?
No. The audio tempo is changed without changing pitch.
Will slow motion be smooth?
Frames are stretched, not invented, so 0.25× on a 30 fps clip plays at about 7 fps. Phone slow-mo footage (120/240 fps) looks best.
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