

How to Change Aspect Ratio in iMovie 10 on Mac so, let’s quickly learn how to change aspect ratio in iMovie. Actually, you wouldn’t face such issues if you apply the appropriate aspect ratio. Other times, you may just discover that files become abnormally cropped or stretched when viewing. 16:9 for YouTube) will require you to crop it-leaving out important parts. Uploading an image or video to a platform that requires specific ratios (e.g. 1:1 is used for Instagram, 9:16 for TikTok, 21:9 for cinema. These days, 16:9 (widescreen aspect ratio) is the preferred ratio widely used in TVs, computers and smartphones.Īmong other commonly used aspect ratios, 4:3 was mostly used in the past as screens were much smaller and almost squares. By default, the aspect ratio is set by the recording device-your phone, computer, digital camera, etc.

It is simply how the video appears on the screen.

A video’s aspect ratio is the ratio of the width to height (respectively) of the video.
