|Media type||Optical disc|
|Capacity||900 MB (single layer), 1.8 GB (dual layer)|
|Usage||Games, movies, music|
|Released||December 12, 2004|
The Universal Media Disc (UMD) is a discontinued optical disc medium developed by Sony for use on their PlayStation Portable handheld gaming and multimedia platform. It can hold up to 1.8 gigabytes of data and is capable of housing video games, feature-length films, and music. UMD was the trademark of Sony Computer Entertainment for their optical disk cartridge (ODC).
While the primary application for UMD discs is as a storage medium for PSP games, the format is also used for the storage of motion pictures and, to a lesser degree, television shows for playback on the PSP. The video is encoded in the H.264/MPEG-4 AVC format, with the audio in ATRAC3plus. Video stored on UMD is typically encoded in 720×480 resolution, but is scaled down when displayed on the PSP.
The American punk rock band The Offspring released their Complete Music Video Collection on the format.The BBC released a number of its programmes on UMD in the UK, including The Office , The Mighty Boosh , Doctor Who and Little Britain . WWE also released some wrestler highlights and documentary content on UMD format, such as The Monday Night Wars , Jake the Snake Roberts: Pick Your Poison, and WWE Raw Homecoming (a special episode of WWE Raw celebrating the return to USA Network); the only WWE pay-per-view released on UMD format was WrestleMania XXIV.
Tupac's performance, Live at the House of Blues , was also released on the UMD, which also included several music videos, including Hit 'Em Up.
Some adult films have been released on UMD in Japan.
ECMA-365: Data Interchange on 60 mm Read-Only ODC – Capacity: 1.8 GB (UMD)
The case dimensions for UMD discs are 177×104×14mm.
According to the official ECMA specification Sony designed the UMD to support two possible future enhancements and products.
DVD region coding has been applied to most UMD movies and music. However, all PSP games are region-free.
UMDs offer large capacity and the capability to store quality audio/video content; however, the format's proprietary nature and the lack of writers and blank media made adoption difficult. The UMD format never saw implementation on any device other than the PlayStation Portable, and as a result the market was very limited compared to those for other optical media formats. Buyers were generally put off by the high price of UMD releases, which often retailed at comparable prices to but lacked the extra content found on DVDs. Poor sales of UMD movies early in the format's life had caused major studios Universal and Paramount to rescind their support.Retail support of the format experienced similar troubles, and in 2006 Wal-Mart began phasing out shelf space devoted to UMD movies, with other chains soon following suit. By 2006 most non-specialty retail stores had stopped bringing in new UMD movies and no longer had a separate section devoted to them, with a few stray unsold titles mixed in among the regular PSP games.
In August 2007, Multimedia Recovery brought to the market their UMD Replacement Case after many complaints from PlayStation Portable owners that the outer casing of the UMD disc was cracking or pulling apart due to the poor design, which causes the UMD to become unreadable in the PlayStation Portable.
In late 2009, Sony began pushing developers away from the UMD format and towards digital distribution on the PlayStation Network in preparation for the launch of the digital-download-only PSP Go, which was the first (and only) PSP model to not include a UMD drive.However the system experienced lackluster sales compared to previous models, with most consumers still choosing the UMD-compatible PSP-3000 model, which continued to be sold alongside the PSP Go. Despite the earlier push for PlayStation Network releases around the PSP Go's launch, over half of the PSP's library was only ever available in UMD format including Crisis Core: Final Fantasy VII and Kingdom Hearts Birth by Sleep , though there have been a few PlayStation Network–only releases since the PSP Go's launch, such as LocoRoco Midnight Carnival . Still, most new games continued to be distributed via UMD, and, aside from those published by SCE, not all have been released on PlayStation Network. In 2011, the PSP-E1000, a budget PSP model with a UMD slot but without Wi-Fi (and thus no internet connectivity), was released, and is the final revision of the PlayStation Portable.
Since 2011, there have been no more movies released on UMD.
The successor of the PlayStation Portable, the PlayStation Vita, dropped UMD support entirely in a move similar to the PSP Go, focusing instead on digital downloads and opting for low-profile flash-based media for its retail software. The year 2014 marked the discontinuation of the PlayStation Portable, which rendered UMDs no longer available.
UMD can be dumped into normal disc image files (.iso or .cso), using a cracked PSP for the optical drive. This file can be loaded by a cracked PSP or PS Vita from a MemoryStick, using a hacked version of the game download functionality.
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