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DVD (Abbreviation for Digital Versatile Disk or Digital Video Disk) is a digital optical disk storage format that was invented and developed in 1995 and published in late 1996. The medium can store any kind of digital data and is commonly used for software and other computer files as well as video programs that are viewed by DVD players. DVDs provide a higher storage capacity than compact disks of the same dimensions.
Pre-recorded DVDs are mass-produced using molding machines that physically stamp data onto the DVD. These disks are a type of a DVD-ROM because the data can only be read and not written or erased. A blank recordable DVD disk (DVD-R and DVD+R) can be recorded using a DVD recorder and can then be used as a DVD-ROM. Rewritable DVDs (DVD-RW, DVD+RW, and DVD-RAM) can be recorded and deleted several times.
DVDs are used in DVD-Video consumer digital video format and in DVD-Audio consumer digital audio format as well as in DVD disks written in special AVCHD format to carry high-definition content (often in combination with AVCHD format camcorders). DVDs containing other forms of information can be referred to as DVD data disks.