Video tools
Speed up or slow down video
Apply 0.5× slow motion up to 4× fast-forward. Audio tempo is adjusted so voices keep their pitch.
Drop a file here, or click to browse
Stays on your device
Accepts
MP4, MOV, WebM, MKV and other video files
Output
MP4 at 0.5× to 4×
Good to know
- Audio tempo is adjusted to keep voices in pitch.
- Files up to roughly 1 GB usually work; processing runs on your device, so it takes about as long as the clip.
- Keep the tab open and visible while it works.
About
What is the Change Video Speed?
Change Video Speed makes a clip slower (0.5×) or faster (up to 4×) while keeping the audio in tune.
Tips for best results
- 2× is the sweet spot for tutorials.
- Slow motion looks best with 60 fps footage.
- Trim first to save time.
Why use it
- ●Slow-motion and time-lapse looks.
- ●Audio pitch is preserved.
- ●Private.
Common uses
- →Slow-motion highlights
- →Speeding up tutorials
- →Time-lapses
How to use Change Video Speed
- 1Drop a video.
- 2Choose a speed.
- 3Process and download.
Frequently asked questions
Are my files uploaded anywhere?
No. Everything runs locally in your browser, so your files never leave your device.
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