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DVD is an optical storage media format that is primarily used for playback of movies with high video and sound quality. The letters in DVD do not stand for anything in particular, but it originally stood for Digital Video Disc or Digital Versatile Disc, depending on which nonauthoritative source you ask. |
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DVD is an optical storage media format that is primarily used for playback of movies with high video and sound quality. The acronym "DVD" does not stand for anything in particular now, but it originally stood for "Digital Video Disc" or "Digital Versatile Disc", depending on which nonauthoritative source you ask. |
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Most DVD-Video titles use CSS? encryption. |
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Most DVD-Video titles use [Content Scrambling System]? (CSS) encryption to discourage people from making perfect digital copies to another medium, however DVD discs can be duplicated in entirety. Discs can also specify for the player to use Macrovision, an analog anti-copying scheme that prevents the consumer from copying the video onto a VCR tape. |
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DVD movies can contain a region code, denoting which area of the world it is targeted at, which is completely independent of encryption. The commercial DVD-video player specification dicates that players must only play discs that contain its region code. This allows the film studios to dictate release schedules and prices around the world, for commercial and logistical reasons. However, many DVD players around the world allow playback of any disc, or can be modified to allow playback of discs from other areas of the world in violation of the Digital Millennium Copyright Act (in the United States) and counterparts in other countries. New Zealand is unique in that the courts decided that the DVD region coding system is restrictive and therefore illegal, allowing region-free players to be sold commercially. |
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DVD movies can contain a region code, denoting which area of the world it is targeted at, which is completely independent of encryption. The commercial DVD-video player specification dictates that players must only play discs that contain its region code. This allows the film studios, for commercial and logistical reasons, to dictate release schedules and prices around the world. However, many DVD players around the world allow playback of any disc, or can be modified to do so, in violation of the Digital Millennium Copyright Act (in the United States) and its counterparts in other countries. New Zealand is unique in that the courts decided that the DVD region coding system is restrictive and therefore illegal, allowing region-free players to be sold commercially. |
| 5 | Russia, other former Soviet Union countries, eastern Europe, Indian subcontinent, Mongolia, Africa |
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| 5 | Russia, other former Soviet Union countries, eastern Europe, Indian subcontinent, Mongolia, Africa |
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| 8 | International venues such as airplanes, cruise ships, etc. |
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| 8 | International venues such as airplanes, cruise ships, etc. |
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