A copy-protected DVD is designed to prevent you from making unauthorized copies of the movie. DVD copy protection is a technology that places restrictions on how you can use the DVD. For example, you may not be able to copy the DVD to your computer or to another disc.

DVD copy protection is also known as encryption. The encryption technology is used to scramble the data on the disc so that it cannot be copied. In order to view the movie, you must have the correct decryption key.

Some DVD players include a built-in decryption key, while others require you …