UltraViolet is a free, cloud-based digital rights library for the movies and TV shows that you purchase or redeem at participating retailers. When you buy a movie or TV show that comes with an UltraViolet right from a retailer that you have linked to your UltraViolet Library, it's automatically added to your UltraViolet Library and you have options to stream it over the Internet and/or download it for offline viewing to a variety of devices.