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  DVD - What does DVD mean ?


DVD - Digital Versatile Disc (Digital Video Disc)

A DVD (digital versatile disc) is similar to an audio CD, but has a storage capacity far greater (up to 17Gb) and a faster access time (up to 1.3MBps) than a standard CD-ROM.

Due to the bigger capacity, faster access time and the use of MPEG compression, DVDs are commonly used as a medium for digital video.

Some DVDs can store data on both sides of the disc (4.7Gb per side / 133 mins of video with sound). Double sided, dual layer discs can hold up to 17Gb of data.

DVD Writers (DVD-R/RW) allow the home user to back up any old video, or create back-up copies of DVDs.

DVD Writers are often advertised as 4X-4X-12X, this means it will burn (write) at 4X, ReWrite (write again over an existing rewritable DVD) at 4X, and read at 12X the normal DVD speed.
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