Facebook started doing that pre-pandemic. They’d take picture you and a friend of yours were tagged in and put them to music with various fades for your “friendiversary” (anniversary of when you both pushed the friend button). Then they’re present it to you and you could share it. That’s not AI that’s easy. It’s just pulling the pics out, put them in 4 second clips with randomly selected fades. Once you have the data to crunch it’s 5 minute code.
Then Apple copied Facebook? I don’t have a Facebook account, but my wife and daughters do. Curious…