Toolbox
Buy

Speed Up or Slow Down a Video on Your Mac

Change Speed makes a video faster or slower, anywhere from 0.25x to 4x. Voices and music keep their natural pitch by default, so a 2x lecture does not sound like chipmunks. Drop a single clip or a whole folder and every video gets the same speed.

Get Toolbox for MacAll Video tools

One-time purchase · macOS 15 or later

The Video category in Toolbox for Mac, with Download Video, Burn In Subtitles, Change Speed, Extract Frames, Record Screen, Compress Video, Convert Video, Resize Video, Crop & Rotate Video, Media Info, Trim Video, Merge Videos, Mute Video, Replace Audio and Video to GIF.The Video category in Toolbox for Mac, with Download Video, Burn In Subtitles, Change Speed, Extract Frames, Record Screen, Compress Video, Convert Video, Resize Video, Crop & Rotate Video, Media Info, Trim Video, Merge Videos, Mute Video, Replace Audio and Video to GIF.

How to use Change Speed

  1. Open Change Speed and drop one or more videos, or a folder.

  2. Drag the speed slider or click a preset such as 0.5x, 1.5x or 2x.

  3. Choose whether to keep the original pitch or mute the audio, and pick the output format.

  4. Click Change Speed and find the results in a new folder in Downloads.

Questions about Change Speed

How do I speed up a video on Mac without changing the voice?

Leave Keep original pitch turned on. Voices and music keep their natural pitch at any speed.

Can I make a slow motion video?

Yes. Set the speed below 1x, down to 0.25x. Toolbox shows the new length of the video before you start.

Can I change the speed of several videos at once?

Yes. Drop several files or a whole folder and they are all processed with the same setting. Your originals are not changed.

72 Mac tools. One app. Pay once.

From $24.99 one-time · macOS 15 Sequoia or later

Buy Toolbox from $24.99