How do I make and upload a thumbnail?
Thumbnails can be specially created in programs that are available to you (Pages, Word, PowerPoint, Canva, etc.), or simply a high-quality screenshot from a frame of your video. It’s recommended that thumbnail dimensions are 1280 x 720 pixels. The file size must be under 2MB. Please ensure the thumbnail is high resolution so the picture is clear.
To upload your thumbnail, select the Upload Video tab, scroll to the Upload Thumbnail section, select the file you want to upload, and then click Upload My Video. When it’s fully uploaded, click "Save & Next" at the bottom of the screen to continue.