Video · Watermark Video

Add a watermark or logo to a video on Mac

Brand videos with your name or logo.

Runs on your MacFFmpeg, one-click install

Three steps. That's it.

1
Drop your files
Drag files onto Watermark 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 text, or a png logo. 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 Watermark Video does

Type a watermark, or drop a PNG logo along with the videos. Choose the corner, the size relative to the video's width and the opacity.

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

Options

Text, or a PNG logoPosition: any corner or centreSize from 5% to 40% of the widthOpacity from 20% to 100%

Great for

Brand videos for social media
Protect a preview you send to a client
Add a channel logo to tutorials

Questions about Watermark Video

Does Watermark Video upload my files?

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

Will Watermark 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 Watermark Video need?

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