Video Speed Changer
Change the playback speed of any video. Audio stays in sync and pitch-corrected.
🔒 100% private — runs in your browser⚡ Free forever🎯 No watermark
About this tool
Speed up or slow down video clips — 0.25× to 4× — with audio pitch preserved.
Unlike most online tools, Video Speed Changer never uploads your files. Everything is processed locally on your device using modern browser APIs — your videos, audio and images stay private, and there are no file-size limits or queues.
Frequently asked questions
Yes — audio is time-stretched too, and the pitch stays natural for 0.5×–2×.
Yes — 0.25× and 0.5× create smooth slow motion (best from 60fps source footage).
No — processing happens locally, so limits don't apply.