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DVD Formats
DVD-Video (e.g. the DVD movies you buy and rent)
- Commercial DVDs, the movies that we all watch, are created by stamping DVDs.
- This creates small craters on the surface of the readable layer of the DVD, which in turn scatter (rather than reflect back to a sensor as normal) the laser reading the disc.
- There can be one, or more commonly two, readable layers.
- Many earlier players are designed, and their laser focused, specifically to read this kind of stamped DVD.