User Guide

How to use Wondershare UniConverter (originally Wondershare Video Converter Ultimate)?
Learn the step-by-step guide below.

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How to Crop Videos on Mac

You can remove the black edges in your videos easily with Wondershare UniConverter for Mac (originally Wondershare Video Converter Ultimate for Mac). It provides you function of cropping, rotating, and changing aspect ratio to your videos. Download and install Wondershare UniConverter for Mac and follow the steps below to crop video on Mac.

Step 1 Add Video to Crop

Launch Wondershare UniConverter for Mac after installation, add the video you want to crop on Mac by clicking on the +Add Files button under the Convert section.

The edit icons including Trim, Crop, and Effect are present under the added file thumbnail image. Click on the Crop icon to open the crop setting window.

add videos to crop on Mac

Step 2 Rotate Video on Mac

The setting window shows the Original Preview and the Output Preview. Before cropping the video, you can also rotate it in 90 degrees clockwise and anticlockwise. Or flip the video horizontal and vertical as needed. As you select the option, the effect of the changes made can be checked from the Output Preview window.

rotate video mac

Step 3 Crop Video on Mac

To crop the video on Mac, drag the corners of the video frame at the Original Preview window. The Crop Area Size also changes as you move the corner and simultaneously the effect can be seen on the Output Preview window.

crop video size mac

Step 4 Choose Video Ratio

Hit the drop-down button at the Aspect Ratio: tab. Select from the given options: Keep Original, Crop Size, Full Screen, and others.

customize video aspect ratio

Step 5 Confirm Editing Changes

Click the Save button will confirm all the changes made to the video. If you want to get back to the default file, click on the Reset button.

confirm video changes

Step 6 Save the Cropped Video on Mac

At the main interface of Wondershare UniConverter, select the target format from the Convert all tasks to: > Video option. Hit on the Convert All button to start the process. The cropped and converted file can be located from the Converted tab or the Output location on your Mac.

save cropped videos to Mac

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