You can replace Canvas Studio video thumbnails. These can be customized for any of your own uploaded Canvas Content. Dimensions for thumbnail images should be approximately 1000 pixels wide x 512 pixels high. For best results, please retain the aspect ratio for the image to scale properly.
View Uploads
In Studio, the My Library page opens by default.
Replace Thumbnail
Locate the video. Then click the Options icon [1] and click the Replace Thumbnail link [2].
Open File
Locate the file on your computer [1] and click the Choose or Open button [2].
View Thumbnail
View the new thumbnail.