The Analog Protection System, popularly known as Macrovision after the company that developed it, is a protection system that is applied to the composite analog video signal coming out of DVD players. We will go over each of these schemes in turn.
Recordable DVD discs are also sometimes copy protected using Content Protection for Recordable Media (CPRM) encryption.
These are Analog Protection System (APS) scrambling, Content Scramble System (CSS) encryption, and a system involving corrupted disc structure. There are three types of copy protection that are used on commercial pre-recorded DVD discs. The purpose of this document is to clarify both the technical and the legal aspects of copy protection for DVD and Blu-ray discs. There is, however, a great deal of confusion about how these copy protection schemes work and what kind of legal rights consumers may have.
Introduction to DVD and Blu-ray Copy ProtectionĬommercial pre-recorded DVD and Blu-ray discs are typically protected with some form of copy protection.
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