Blank recordable DVD discs ( DVD-R and DVD+R) can be recorded once using a DVD recorder and then function as a DVD-ROM. Such discs are a form of DVD-ROM because data can only be read and not written or erased. Prerecorded DVDs are mass-produced using molding machines that physically stamp data onto the DVD. Variants can store up to a maximum of 17.08 GB. A standard single-layer DVD can store up to 4.7 GB of data, a dual-layer DVD up to 8.5 GB. DVDs offer significantly higher storage capacity than compact discs (CD) while having the same dimensions. The medium can store any kind of digital data and has been widely used for video programs (watched using DVD players) or formerly for storing software and other computer files as well. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The DVD (common abbreviation for Digital Video Disc or Digital Versatile Disc) is a digital optical disc data storage format. High-Definition Versatile Multilayer Disc (HD VMD).HD DVD: HD DVD-R, HD DVD-RW, HD DVD-RAM.Blu-ray Disc ( BD): BD-R & BD-RE, Blu-ray 3D, Mini Blu-ray Disc, 4K Blu-ray ( Ultra HD Blu-ray).DVD: DVD-R, DVD+R, DVD-R DL, DVD+R DL, DVD-R DS, DVD+R DS, DVD-RW, DVD+RW, DVD-RAM, DVD-D, DVD-A, DVD-Video, HVD, EcoDisc, MiniDVD.Compact disc ( CD): CD-DA, CD-ROM, CD-R, CD-RW, 5.1 Music Disc, Super Audio CD ( SACD), Photo CD, CD Video ( CDV), Video CD ( VCD), Super Video CD ( SVCD), CD+G, CD-Text, CD-ROM XA, CD-i, MIL-CD, Mini CD.DVD+RW, DVD-RAM (Fixed-track writable media).Up to four layers are possible in a standard form DVD.Ħ50 nm laser with a focused beam using more power than for reading, 10.5 Mbit/s (1×)ĭVD Forum's DVD Books and DVD+RW Alliance specifications DVD-ROM and DVD-R(W) use one encoding, DVD-RAM and DVD+R(W) uses anotherĤ.7 GB (single-sided, single-layer – common)
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