Select the Share icon in the upper-right corner.When you’re done, click on the blue tick icon in the upper-right corner of your video.Drag the edges of the cropped window across your video.Click on the Crop icon on the top toolbar.Note: You can also drag and drop video clips from the browser directly to the iMovie timeline.

Click on Import Media to upload a video from your Mac.Click on the Create New button in the upper-left corner of your screen.

To change the aspect ratio of a video on iMovie on your Mac, follow the steps below: If you don’t already have it, download iMovie to your Mac. How to Change the Aspect Ratio in iMovie on a Mac That’s why it might be easier to make the change on a Mac and work on a larger screen. It might be challenging to crop the video precisely with your fingers, and you might have to go back to the app to adjust the dimensions again. When it comes to the aspect ratio you choose, it depends on the platform where you plan to share the video. You can also use the AirDrop feature to share it with other devices. You can share the video to iCloud Drive, Mail, and Messages directly from the app. The video will be saved in your iPhone’s camera roll.

When you’ve finished, select Done in the upper-left corner of your screen.

To enlarge the video, drag your fingers to the outer edges of your screen. To make the video’s dimensions smaller, pinch towards the center of the screen.

Zoom your video by pinching the timeline.

Navigate to the magnifying glass in the upper-right corner of your screen.

Select Movie from the New Project window.

Tap on Create Project option on your home page.

To change a video’s aspect ratio in iMovie on your iPhone, follow the steps below:

How to make vertical video in imovie