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UMD
(redirected from UMD (disambiguation))

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UMD
(Universal Media Disc) The optical disc used in Sony's PlayStation Portable (PSP). Officially the ECMA-365 standard, a UMD is a read-only medium for games and movies. Video is encoded in H.264, and audio is encoded in ATRAC3plus. See PlayStation.

A UMD Cartridge
Single-layer UMDs have a capacity of 900MB, and dual-layer cartridges hold 1.8GB. The DVD regional coding is used for UMD movies, but not for games. (Image courtesy of Sony Computer Entertainment.)
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