Seems I’m having the same problem as @nathanguyette when I put into an app - “Video unavailable.” I tried it with the Anvil YouTubeVideo component and also as an embed in a Custom HTML form, but no luck. I don’t think it’s a rights issue because I can embed it elsewhere without a problem, so I’m at a bit of a dead end.
I also got the same result after cloning @alcampopiano’s app with the different video and no autoplay - “video unavailable.” Pretty strange.