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Change video speed
Speed up long clips or create slow motion. Preview the new speed instantly, then export a video that plays at that speed everywhere.
Upload a video to change its speed
or drop a file here · MP4, MOV, WebM or MKV
Processed on your device. Nothing is uploaded.
Video Speed Changer: free, private and right in your browser
Speed up long clips or create slow motion. Preview the new speed instantly, then export a video that plays at that speed everywhere.
- Live preview at the chosen speed
- Presets from 0.25× slow motion to 4× fast forward
- Custom speeds from 0.1× to 16×
- Keep the sound (sped up) or remove it
- Private: processed on your device
How to use the video speed changer
REC 00:42Step 01Choose your video
Select an MP4, MOV, WebM or MKV file.
Step 02Pick a speed
Choose 0.25× to 4×, or type any speed. The preview plays at the new speed.
MOV → MP4Step 03Render and download
Click the button to render the new video, then download it.
Time-lapses
Turn a long recording into a quick time-lapse at 4× or faster.
Slow-motion moments
Slow down a jump, a pour or a reaction for dramatic effect.
Snappier tutorials
Speed up screen recordings so viewers don't wait through slow parts.
Frequently asked questions
Is my video uploaded?
No. Everything happens in your browser using your own device. Your video never leaves your computer or phone.
Does the sound change pitch?
Yes. When you keep the sound, it speeds up or slows down with the video like a tape, so voices sound higher or lower. You can also remove the sound.
Will slow motion look smooth?
Slowing down repeats frames. Footage filmed at a high frame rate (60 fps or more) gives the smoothest slow motion.
How long does it take?
The whole video is re-rendered on your device. Short clips take seconds; long videos take longer on phones.
Which browsers are supported?
Recent Chrome, Edge, Firefox and Safari (16.4+). The tool uses WebCodecs, your browser's built-in video encoder, and tells you if something isn't supported.
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