Video · Crop Video

Crop video on Mac

Centre-crop to square, vertical or widescreen for any platform.

Runs on your MacFFmpeg, one-click install

Three steps. That's it.

1
Drop your files
Drag files onto Crop Video, choose them with Choose Files, or right-click them in Finder.
2
Choose the options
Set what you need in the options panel, such as aspect ratio. Your choices are remembered for next time.
3
Get the result
The result lands in a new dated folder in Downloads › OneMacTools. Your originals are never changed.

What Crop Video does

Crop to 1:1 square, 9:16 vertical, 4:5 portrait, 16:9 widescreen, 4:3 or 21:9. The largest centred area with that shape is kept, so nothing is stretched.

Uses FFmpeg, which OneMacTools installs for you with one click through Homebrew.

Options

Aspect ratio: 1:1, 9:16, 4:5, 16:9, 4:3 or 21:9

Great for

Make a square clip for an Instagram post
Turn a landscape video vertical
Remove black bars from a recording

Questions about Crop Video

Does Crop Video upload my files?

No. Crop Video runs entirely on your Mac, so your files never leave it and it works offline.

Will Crop Video change my original files?

No. Results are saved as new files in a dated folder in Downloads › OneMacTools, and your originals are left exactly as they were unless you turn on an option that says otherwise.

What does Crop Video need?

macOS 26 or later and FFmpeg, which OneMacTools can install for you through Homebrew with one click.