Speed Video changes a clip's playback rate — from a quarter speed for slow-motion detail to four times faster for a quick recap or timelapse feel. The audio is kept pitch-correct as the speed changes, and a live preview shows the new pace before you export. Everything is processed on your device.
Drop the video in and it plays in the preview at normal speed.
Pick a preset like 0.5× or 2×, or fine-tune anywhere from 0.25× to 4× with the slider. The preview updates live.
Export to render the sped-up or slowed-down clip and download it.
Speed Video changes a clip's playback rate — from a quarter speed for slow-motion detail to four times faster for a quick recap or timelapse feel. The audio is kept pitch-correct as the speed changes, and a live preview shows the new pace before you export. Everything is processed on your device.
No. The audio is time-stretched with atempo, so voices and music keep their natural pitch at any speed.
From 0.25× (four times slower) to 4× (four times faster), with presets at 0.5×, 1×, 1.5× and 2×.
Yes — slowing a clip down makes it longer and speeding it up makes it shorter, in proportion to the rate you choose.
Yes — Speed Video is completely free. There's no account, sign-up, watermark or limit on the core tool.
No. This tool runs entirely in your browser — your file is processed on your own device and never leaves it. The only network request is an anonymous usage counter.
No. It runs in any modern browser — Chrome, Edge, Safari, Firefox, Brave — with nothing to download or install.