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DVD
Last modified: Wednesday, August 04, 2004 

Short for digital versatile disc or digital video disc, a type of optical disk technology similar to the CD-ROM. A DVD holds a minimum of 4.7GB of data, enough for a full-length movie. DVDs are commonly used as a medium for digital representation of movies and other multimedia presentations that combine sound with graphics.

The DVD specification supports disks with capacities of from 4.7GB to 17GB and access rates of 600KBps to 1.3 MBps. One of the best features of DVD drives is that they are backward-compatible with CD-ROMs, meaning they can play old CD-ROMs, CD-I disks, and video CDs, as well as new DVD-ROMs. Newer DVD players can also read CD-R disks.

DVD uses MPEG-2 to compress video data.

For comparison and contrast, see DVD-R, DVD-RW, DVD+R, DVD+RW and DVD-RAM.

Also see DVD Formats Explained in the Did You Know . . . ? section of Webopedia.

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For internet.com pages about DVD . Also check out the following links!

Related Links

DVD FAQ 
This comprehensive FAQ all about DVDs is updated regularly.

DVD Overview 
Outlines the technologies behind the large capacity successor to the CD, its various formats and the compatibility issues. Includes graphics, diagrams and an integrated glossary. This page is from "The PC Technology Guide."

DVD resource index 
This site is an impressive index of Web-based resources and information related to DVD technology.

O P E N L A W : OPEN DVD 
A Web site from Harvard University that chronicles the development of DVD law.

DVD Forum
Home page of the DVD Forum, an ad-hoc association of hardware manufacturers, software firms, and other users of the DVD format. Includes links to news items, conferences, and founding companies.

DVD technical notes
Provides a comprehensive array of technical notes about DVD technology. Sections include: general, physical, applications, files, standard density CD, and other Web resources.

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KnowledgeStorm: CD and DVD Drives - Business technology search site offering software, service, reseller and hardware information on thousands of IT solutions.

related categories

DVD

Lasers

Peripheral Devices

related terms

AOD

B-frame

Blu-ray

CD-I (Compact Disc-Interactive)

CD-ROM

compact disc

decoder

Divx

Dolby Digital

DVD+R

DVD+RW

DVD5

DVD9

DVD-R

DVD-RAM

DVD-ROM

DVD-RW

DVD-Video

DVI

HD-DVD

I-frame

MPEG

multimedia

new media

P-frame


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