To use it, you just scan your disc using the Vudu app, then download the digital file to your TV, console, set-top box, phone, tablet or, (ironically) Blu-ray player. "The average movie collector owns nearly 100 DVDs and Blu-rays," says Vudu GM Jeremy Verba. "We are constantly looking for ways to help them unlock additional value from the movies they already own."

If you have a Blu-ray drive on your computer, it's not hard to rip your collection yourself, though that's technically still illegal. Considering that most folks probably don't have such drives anymore (almost no laptops don't come with them nowadays), the service does make some sense.

Walmart has partnerships with most of the major studios, including Sony, Paramount, Fox and Universal, which presumably take a cut of the digital conversions. A notable exception to that, however, is Disney, which has the rights to the Marvel, Star Wars and Pixar franchises, to name just a few. The service is now available on the Vudu app for iOS or Android, and users get one complimentary mobile conversion.