Movies on DVD are guarded by a CSS (Content Scrambling System) encryption, security developed and used by Hollywood as a defense against movie piracy. In simple terms, CSS encrypts data on DVD with a special key can be decrypted. The key is not a secret, the developers of DVD playback software that need to read information about the software.

CSS protection used a 40-bit encryption. In simple terms, the copies can not be reproduced because the keymiss. The key is not writable on DVD-RW or DVD-R. Protected by the Digital Millennium Copyright Act against the proliferation of illegal operators, with the goal of eliminating the threat of copying. Therefore, it seems something like a DVD copy.

However, protection proved incompetent. CSS encryption was cracked, which also produced a series of software to copy DVD to another. Apart CSS protectionMacrovision has with their form of copy protection, which can also be found on VHS cassettes can occur. However, advances like these are not always universally applicable, so that seemed to some compatibility problems.

There are several programs that can decode correctly coding CSS. One is DVD Decrypter, which not only protection but also gives you the luxury ripping some sections of the film. In addition to copyingthem on a recordable DVD.

AnyDVD is an application software that can remove the protection. Unlike DVD Decrypter, AnyDVD can rip and burn directly.

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