Hi there!

You are probably seeing this because you want to adjust the aspect ratio of your video.

The various aspect ratios available are:

Landscape(16:9)- Videos for YouTube, Desktop
Square(1:1)- Videos for Facebook and Instagram posts
Portrait(9:16)- Videos for Snapchat, IGTV
Instagram Ad(4:5)- Videos for Instagram Ads
Facebook cover- Videos for the Facebook cover video

To set the Aspect Ratio of your video:

Video Settings->Aspect Ratio

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