Hi Jessie!
Tabs support videos! You'll want to remove whatever placeholder image is there and then you can upload a video file (or embed a YouTube video). There is a 5GB limit for video, but that's pretty big. It may take a little while to get your video uploaded but it should work! I just tested it here and was able to put a video in each tab. The video might be kind of small if someone is taking the course on a mobile device. It would be a little bigger in a Process interaction but either one would work!
