While editing the project, you can change the canvas settings: choose one of the aspect ratios and change its background color.
To adjust the canvas settings, in the navigation sidebar, click the Settings icon, and then do one of the following:
- To change the video aspect ratio, select one of the aspect ratio presets: 1:1, 9:16, 16:9, 4:5, 5:4, 4:3, 2:3, or 21:9.
- By default, the canvas background color is black. To change the color, click #000000 in the color code box to specify a new custom color or select one of the color presets.