Video Speed · 0.25× slow-mo to 4× fast-forward
Slow down or speed up any video, 0.25× (smooth slow-mo) to 4× (hyperlapse). Optional pitch preservation so voices stay natural. Browser-only re-encode via MediaRecorder + WebAudio.
Drop your image
Drop a video, pick 0.25× (slow-mo) to 4× (hyperlapse). Re-records in real time, browser-only, no upload.
Up to 50 MBVideos stay in your browser
Good to know
Questions
- Is Video Speed Changer free?
- Yes. Video Speed Changer is completely free, no account, no sign-up, no usage limits, and no watermark. It runs entirely in your browser.
- Do my files get uploaded to a server?
- No. Video Speed Changer processes everything on your own device, your files never leave your browser. You can confirm it yourself: open your browser's Network tab and you'll see no video is ever uploaded.
- How do I use Video Speed Changer?
- Slow down or speed up any video, 0.25× (smooth slow-mo) to 4× (hyperlapse). Optional pitch preservation so voices stay natural. Browser-only re-encode via MediaRecorder + WebAudio. Just pick a file and it works locally, right here in the tab.
- Is there a file size limit?
- There's no hard size limit. Because Video Speed Changer works locally instead of uploading, the practical ceiling is your own device's memory rather than any server quota, most everyday clips process without a problem.
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