If you buy or rent a movie from the Apple TV app, you can stream it on the device that you bought it on and any of your other devices, as long as you're signed in to all of your devices with the same Apple ID. Learn what to do if you can't stream movies or TV shows. Your iPhone, iPad, iPod touch, Mac, PC, or Apple TV automatically play the best quality of video available for the device and your Internet connection.

If you purchase or rent a standard definition (SD) video, you can't play higher-quality versions.