The UMD (Universal Media Disks) format for Sony PSP (PlayStation portable) has been approved as a standard by Ecma International, at the 89th General Assembly held in Amsterdam, June 21, 2005. Ecma is an international standardization organization based in Geneva, Switzerland. In the general meeting of Ecma, held in Amsterdam, Netherlands on June 21, the organization approved the UMD as a physical format. The standard is downloadable at www.ecma-international.org (ECMA-365, "Data Interchange on 60 mm Read-Only ODC - Capacity: 1,8 Gbytes")

The official approval of the UMD standard opens the way for Sony to further expand the usage of the UMD format not only for games, but also for video titles, just like as in the case of DVD-Video. Note that the first sales of adult UMD videos are scheduled for July in Japan.