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Change video speed

Speed up or slow down a video, from 0.25× to 4×, with the sound kept in step.

Runs in your browser. Your file is never uploaded.

Speed up a video or make it slow motion

Change Video Speed plays a video faster or slower, from a quarter of normal speed to four times as fast. The sound changes speed with it and keeps its pitch, so voices sound natural rather than squeaky or deep.

Use it for time-lapses, to shorten a long tutorial, or for dramatic slow motion.

Change video speed in short

Choose a video, then pick a speed, such as 2× faster or 0.5× for slow motion, then select Change speed and download. It's free, there's no sign-up, and it runs in your browser, so the file never leaves your device.

How to use Change video speed

  1. 1

    Choose a video

    Open the clip.

  2. 2

    Pick a speed

    Slide from 0.25× to 4×. The new length is shown.

  3. 3

    Change speed and download

    Select Change speed, watch the result and download.

Good to know

  • The sound changes speed without sounding like a chipmunk; the pitch stays the same.
  • The first time you use an audio or video tool, your browser downloads our 31 MB processing engine. It's kept for next time, so later runs start straight away.
  • Processing happens on your device, so speed depends on your computer. A minute of 1080p video takes roughly one to three minutes on a recent laptop; phones are slower.
  • This tool runs in your browser. Very large files depend on your device's memory.

Ideas

  • Time-lapse

    Speed up a long recording of a build, drawing or sunset.

  • Shorter tutorials

    Play a screen recording at 1.5× to save viewers time.

  • Slow motion

    Slow a jump, splash or goal to 0.5× or 0.25×.

  • Fit a time limit

    Speed a clip up slightly so it fits a 60-second limit.

Why use ConvertFile

  • Natural-sounding audio

    The sound speeds up or slows down without changing pitch.

  • Any speed in between

    Not just presets: choose any speed from 0.25× to 4× in small steps.

  • Never uploaded

    Your video is processed by your own browser and handed back as a download. It isn't sent to our servers, so there's nothing for anyone to see, keep or leak.

  • No watermark, no sign-up

    The video you download is yours as it is: no logo stamped on it and no account needed. It's free for files up to 500 MB.

Supported formats

Opens
MP4MOVWebMMKVAVIM4V3GPMPEGWMVFLV
Saves as
MP4 (H.264)WebMMOVMKV

Change video speed: common questions

How do I speed up a video online?
Choose the video, slide the speed to 2× (or any value up to 4×) and select Change speed.
How do I make a slow-motion video?
Set the speed to 0.5× or 0.25×. Slow motion looks smoothest on video filmed at a high frame rate.
Does the sound change pitch?
No. It keeps its pitch. To change pitch, use Change pitch on the audio.
Is Change video speed free?
Yes. Change video speed is free, works without an account and adds no watermark, for files up to 500 MB. Pro raises that to 2 GB.
Are my files uploaded to a server?
No. Change video speed runs in your web browser, so the file is read on your own device and never sent to ConvertFile.
Does Change video speed work on Mac, Windows, Android and iPhone?
Yes. It runs in any modern web browser, with nothing to install. Very large files work best on a desktop or laptop, because in-browser tools use your device's memory.

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