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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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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. |
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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. |
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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. |
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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 |
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