When the confirmation box appears, click Keep Project Settings Image credit: Filmora x Step 3: Decorate the video and set length On the Project Settings box, select 9:16 (Portrait) from the Aspect Ratio drop-down list, optionally choose your preferred resolution from the Resolution drop-down list, click the Aspect Ratio lock icon next to the resolution values to lock the aspect ratio, choose a frame rate that matches that of the footage you are about to create YouTube Shorts video of, and click OK to save the custom project settings Image credit: Filmora X Step 2: Import and add video to timelineīack on the main interface, click anywhere in the Media window at the upper-left area, and import the source video to Filmora X. Launch Wondershare Filmora X on your Windows or Mac computer (Windows 10 here), click the Preview quality and display settings icon from the upper-right corner of the Timeline, and click Change Project Aspect Ratio from the menu that appears. To learn how to make YouTube Shorts with Filmora X, you can follow the steps given below: Step 1: Configure project settings Elegant Themes - The most popular WordPress theme in the world and the ultimate WordPress Page Builder.