The Associated Press Whenever Madonna sings the 1980s hit “La Isla Bonita” on her concert tour. Some AI video enthusiasts say the emerging technology could one day upend entertainment, enabling you to choose your own movie with customizable story lines and endings. But there's a long way to go before they can do that, and plenty of ethical pitfalls on the way. For now, the longest AI-generated video clips are still measured in seconds.