Change Video Speed Online
Adjust video timing from slow motion to fast forward, preview the result, and export an MP4.
Drop your video here
MP4, MOV, WEBM supported
How to use the video speed changer
Add your video
Upload from your computer or phone. We decode in the browser—no cloud upload is required for the speed change itself.
Set speed and audio
Use presets (0.25×–2×) or the slider (0.25×–4×). Keep natural pitch where possible, allow classic speed-up pitch shift, or export silent video.
Process and download
Run the encoder, preview the result, then download an H.264 MP4 ready for social or editing workflows.
Precise speed control for video
Lightning-fast workflow
Skip heavyweight editors for a simple global speed change. This video speed changer is great for shortening screen recordings or trying slow-mo ideas before a full edit.
Presets + precision
Six one-tap speeds from 0.25× to 2×, plus a continuous slider and numeric input up to 4× for exact control.
Broad format support
Works with formats your browser can decode—typically MP4, MOV, WEBM, AVI, and often MKV. Export is standardized MP4 for sharing.
Browser-based editing
Edit from a modern browser while your device handles the processing.
Thoughtful audio modes
Default aims for stable pitch while changing speed (approximation in-browser). Switch to classic pitch-shift behaviour or mute for re-scoring.
HTTPS & local processing
Encoding runs locally with WebCodecs—your clip isn’t sent to our servers for the render. Always use trusted devices for sensitive footage.
Common questions
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