Change video speed

Speed up or slow down a video from 0.25× to 4×, keeping the audio in pitch.

Drop a video here or use the button below.

Speed (×): 2.00×

Keep audioMute audio

Features

Slow down to 0.25× for smooth slow-motion or speed up to 4× for fast-forward and time-lapse looks.
Keep-audio mode preserves the original pitch so sped-up or slowed voices still sound natural.
Re-timing happens in-browser with FFmpeg WebAssembly — no upload, no signup, no watermark.

How it works

Drop an MP4, WebM, MOV or MKV video into the speed tool.
Drag the speed slider from 0.25× to 4× (or pick a preset like 0.5×, 2× or 4×) and choose to keep or mute the audio.
Click Apply to re-time the clip, then download.

Your files never leave this page

Every conversion runs entirely in your browser using WebAssembly. There is no upload, no server-side processing, no analytics, and no cookies. Open DevTools → Network during the operation and you will see zero outbound traffic.

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Topics covered

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