For DVD speed ratings (1x, 2x, etc.), see DVD drives. Modern DVD drives read and write all CD and DVD formats, except for DVD-RAM, which requires its own drive. For high-definition (HD) optical discs with 1,080 lines of resolution, see Blu-ray.ĭVD first stood for "digital videodisc " then "digital versatile disc" and finally just "D-V-D." In practice, DVD refers to all the following DVD formats. DVDs have 480 lines of resolution in the U.S. Whereas CDs use only one side, DVDs can be recorded on both sides as well as in dual layers. in 1997 and developed by the computer and movie industries, the disc has the same 120mm/4.75" diameter as a CD but holds 4.7GB rather than 700MB. This article is provided by FOLDOC - Free Online Dictionary of Computing ( ) DVDThe standard-definition (SD) optical disc format.
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