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Бесплатно Video Speed Changer

Speed up or slow down a video from 0.25× to 4×, with pitch-corrected audio. Great for slow-motion and timelapse. Runs entirely in your browser.

Без ограничений по размеруФайлы остаются приватнымиРегистрация не требуетсяБесплатно навсегда

Перетащите файлы или нажмите для выбора

MP4, WebM, MOV, AVI, Video без ограничений по размеру файла

Выбрать файлы

Ваши файлы никогда не покидают устройство. Вся обработка происходит локально в браузере.

Speed up or slow down a video (0.25×–4×), with pitch-corrected audio. Runs entirely in your browser.

Optimize for your platform

Make a Slow-Motion Video Speed Up a Video / Timelapse Speed Up a Tutorial or Lecture Speed-Ramp a Clip for Social Slow a Video Down to Analyse It

Как это работает

Speeding up or slowing down a video means re-timing both the picture and the sound. This does it with FFmpeg in your browser, keeping the audio pitch natural.

1
FFmpeg.wasm loads once
The WebAssembly build of FFmpeg (~30 MB) downloads on first use and is cached afterwards.
2
You pick a speed
From 0.25× (slow motion) to 4× (fast forward / timelapse feel). Your file stays in the browser.
3
Video and audio are re-timed
The video uses setpts to change frame timing; audio uses chained atempo filters that stretch time without altering pitch, so voices stay natural.
4
You download the result
The re-timed MP4 is offered for download and previewed in-page.

No upload, no watermark — re-time personal clips, lectures, or tutorials entirely on your device.

Почему наш?

✓Completely free — no hidden costs, ever

✓No account, email, or login required

✓Files stay on your device — processing happens in your browser

✓Works on any device — phone, tablet, desktop

✓No watermarks on any output

✓Browser memory limits may apply for very large files

Бесплатно Video Speed Changer

Optimize for your platform

Как это работает

Почему наш?

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