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FREE TOOL · ON YOUR DEVICE

Change video speed free

Speed up a long video or slow down a moment. Choose a speed between 0.25× and 4× and what happens to the sound: with the pitch kept, the voice is clear without sounding squeaky or deep; with the pitch shifted, it sounds like a sped-up tape.

  1. Add your videos
  2. Choose speed and sound
  3. Download

HOW TO USE IT

Three steps.

  1. Add your videos

    Drop or choose up to 10 MP4, WebM or MOV videos.

  2. Choose speed and sound

    0.25×, 0.5× or 0.75× for slow motion; 1.25× to 4× to speed up. Then keep the pitch, shift the pitch or no sound.

  3. Download

    Download each video or all of them in a ZIP.

NEXT STEP

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Video speed: common questions

Is the slow motion smooth?

It depends on your video. The tool does not invent new frames: at 0.5× a 60-frames-per-second video stays smooth, but a 30 fps video at 0.25× looks choppy.

What does “keep the pitch” mean?

The voice changes speed but not pitch: it does not sound like a chipmunk when sped up or like a giant when slowed down. This is done by stretching or shrinking the sound in small pieces. With very large changes a slight echo may be noticeable.

What are the limits?

Videos up to 300 MB and 10 minutes, and the result can last up to 10 minutes (a 4-minute video at 0.25× would last 16: not allowed). Output up to 1080p; saving video needs WebCodecs.

Are my videos uploaded to a server?

No. The tool runs inside your browser: videos are read and processed on your device and are not sent to Cocuyo or to any third party. The libraries are served from our own site, with no external services. You can check it in your browser’s network tools: your file is not sent.

Is it really free?

Yes. You can try it before signing up; to download the result we ask for a free account, with no subscription. Your free account comes with 30 welcome uses; after that, each use costs 1 credit (top-ups from US$1), and they are unlimited with Basic or Pro. It never adds a watermark.

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WHEN YOU WANT TO CREATE

Make new videos with AI.

Cocuyo’s Studio brings 30+ AI models for image, video and voice together. You see the credit cost before generating, and credits never expire.

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