When I download the mit app inventor it says that it is not compatible with this version of macOS. I am using MacOS 15.3.2 M1,2020.
App Inventor isn’t fully built for Android TV, but you can still try using the WebViewer to display the browser. For looping videos, you could embed a YouTube video with autoplay and loop enabled or set up a timer to handle switching. If you run into limitations, reach out to Idea Maker they specialize in digital solutions and could help you bring your idea to life more smoothly.
There is a newer beta for Apple Silicon you can try out. It's not currently signed though, so you have to change some security settings to run it:
Once you download the pkg file, you will need to Control-Click (or right click, and then select Open from the menu that appears. If that doesn't work, Apple has published a newer technique that you may need to use: