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DVD (Digital Versatile Disc) specifications have been standardized by an association of hardware manufacturers and software firms called the DVD Forum. Specifications from the DVD Forum cover mastering and stamping for DVD Video, DVD-ROM, and DVD Audio.
There are also specifications for recordable DVD media, which individual users can use for recording with compatible drives.
More information on the Plus system can be found at the DVD+RW alliance site.


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What is DVD-RAM?


DVD-RAM is a type of removable disk that computers treat as a hard disk. Its significant advantages for file management include recording by simple drag-and-drop operations and straightforward deletion using the mouse - without the need for special writing software. Besides enabling multiple rewriting (over 100,000 times), this format offers unsurpassed reliability and ease-of-use from cartridge protection and verification during data writing. Also, enjoy excellent interoperability with video equipment. DVD-RAM discs with recordings from DVD recorders can be played and edited on computers. A single disc can store video from recorders in addition to computer data, so the video data and PC data can coexist in a single DVD-RAM disc. This versatility makes DVD-RAM an excellent choice for a spectrum of uses, from daily archiving of data to integration with video equipment.

What is DVD-R?


DVD-R can be compared to the CD-R format for CDs. Although rewriting is unavailable, reading based on press-manufactured DVD-ROM standards is supported, enabling discs recorded in this format to be played in a variety of DVD drives and players. Originally designed for professional authoring to create test versions of commercial DVD Video titles, DVD-R has now been modified as format for general consumer use. Besides its obvious role in DVD Video production, DVD-R is also suitable for data distribution because the discs can be read by many computers and each side can hold an impressive 4.7GB.

What is DVD-RW?


Based on DVD-R specifications, DVD-RW also supports rewriting - about 1,000 times. DVD-RW was designed ensuring that it could be read by devices for DVD-R. It was initially standardized for video applications of DVD recorder, but as computers with drives gained popularity, DVD-RW was modified to accept computer data. DVD MULTI drives can write to DVD-RW discs. Because media for this format conform to DVD-R standards, DVD-RW is an ideal choice for test writing in DVD Video production. Packet writing is used for data storage, making DVD-RW useful as a removable disk format as well.


What is DVD-R?

No other format can match DVD+R/+RW's functionality, simplicity and compatibility. DVD+R/+RW was designed from the beginning with both data and video recording uses in mind. Compatibility with existing DVD players and DVD-ROM drives is a major strength of the DVD+R/+RW format. Because there are no confusing recording modes, you don't have make trade-offs between compatibility and flexibility.

DVD+RW video recorders allow users to add, delete or divide titles, overwrite titles in whole or in part, create or modify play lists and make other changes without losing compatibility with existing DVD players, unlike other formats. DVD+R/+RW also allows instant use and instant eject - you don't have to wait for the disc to format or finalize. And DVD+R/+RW recorders offer the same type of operation you're used to seeing on DVD players



 This page was last updated on 27/02/07

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