"Region 1", "Region 2" and "Region 3" redirect here. For the ITU regions, see
International Telecommunication Union region.
DVD-Video discs may be encoded with a region code intended to restrict the area of the world in which they can be played. Discs can be produced without region coding; they are sometimes referred to as region 0 or (more properly) all region discs. The commercial
DVD player specification requires that a player to be sold in a given place must not play discs encoded for a different region (region 0 discs are not restricted). The purpose of this system is to allow
motion picture studios to control the various aspects of a release (including content, date and, in particular, price) according to the region. In practice many DVD players are or can be modified to be region-free, allowing playback of all discs. Entirely independent of
Content Scramble System (CSS) encryption, region coding pertains to
regional lockout, which originated in the
video game industry.
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