DVD: From DVD Frequently Asked Questions (and Answers)

DVD once stood for digital video disc or digital versatile disc, but now it just stands for DVD -- the next generation of optical disc storage technology. DVD is essentially a bigger, faster CD that can hold cinema-like video, better-than-CD audio, and computer data. DVD aims to encompass home entertainment, computers, and business information with a single digital format, eventually replacing audio CD, videotape, laserdisc, CD-ROM, and video game cartridges. DVD has widespread support from all major electronics companies, all major computer hardware companies, and all major movie and music studios. With this unprecedented support, DVD has become the most successful consumer electronics product of all time in less than three years of its introduction.

It's important to understand the difference between the physical formats (such as DVD-ROM or DVD-R) and the application formats (such as DVD-Video or DVD-Audio). DVD-ROM is the base format that holds data. DVD-Video (often simply called DVD) defines how video programs such as movies are stored on disc and played in a DVD-Video player or a DVD computer (see 4.1). The difference is similar to that between CD-ROM and Audio CD. DVD-ROM includes recordable variations DVD-R/RW, DVD-RAM, and DVD+R/RW (see 4.3). The application formats include DVD-Video, DVD-Video Recording, DVD-Audio (see 1.12), DVD-Audio Recording, DVD Stream Recording, and SACD. There are also special application formats for game consoles such as Sony PlayStation 2.

See:

• http://www.howstuffworks.com/dvd.htm

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• RandyKramer - 09 Feb 2002
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