| Nearly all DVD and Blu-ray Disc home video products are protected against unauthorized distribution outside their licensed territories by what is known as region encoding.
Region 0 DVDs and Blu-ray Discs are unrestricted and unencrypted discs that are playable on DVD and/or Blu-ray Disc players worldwide, provided that NTSC players are used to play NTSC discs and PAL players are used to play PAL discs. Many PAL DVD players are enabled to also play NTSC discs, check your manufacturer’s operation manual for confirmation. Blu-ray Disc players worldwide will play the high-definition, widescreen MPEG-4 AVC/H.264 encoding and specially-marked players will display from the AVCHD encoding format, although region-encoded discs will not play on all BD players worldwide.
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