Free Online Video Speed Changer
Speed up or slow down any video from 0.25x to 4x, right in your browser. Audio pitch is preserved so voices stay natural — no upload, no watermark, no signup.
Features
Any Speed You Need
From quarter-speed slow motion to 4x fast forward, every popular playback rate is one click away.
Slow Motion: 0.25x / 0.5x
Drop the speed to reveal subtle movement or turn a clip into a cinematic slow-mo sequence.
Fast Forward: 1.5x / 2x / 4x
Trim boring stretches of tutorials, timelapses, or dashcam footage without cutting content.
Continuous Slider
Pick any rate between 0.25x and 4x — not just presets. Preview the result before downloading.
Natural-Sounding Audio
Audio pitch is preserved while the tempo adjusts. Voices stay normal-sounding at every speed.
Pitch Lock
The ffmpeg atempo filter keeps voices from going chipmunk-high or demonically low.
Seamless Multi-Stage Chaining
Extreme rates like 0.25x or 4x chain multiple atempo passes under the hood, so output stays clean.
No Audio Drift
Video and audio stay perfectly in sync, even after speed adjustment.
100% Private & Free
Your footage never leaves your device. Everything runs locally in the browser tab.
Zero Server Upload
Files are read, processed, and written back entirely on your own machine.
No Watermark
The exported video is clean — no logo, no stamp, no branding overlay.
Works Everywhere
Any modern browser — desktop or mobile. Chrome, Firefox, Safari, Edge.
FAQ'S
Frequently Asked Questions
Ask us anything!
Change Your Video Speed Now
Free, private, and instant. No signup, no download, no watermark — just drop a file, pick a rate, and download.