General information. |
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On the DVD writing side,
there are two main competing standards. The standard known as DVD-R/RW
(this is a combination of DVD-R and DVD-RW-note the minus in the name.) The
other competing standard is DVD+R/RW (note the "plus" in place of
the dash).
The situation is similar to that of the competing VHS and Beta video
standards decades ago. But unlike the video tapes of old, the two main
competing DVD standards are designed to create discs that may be read by
most consumer DVD movie players. And both standards can read commercial
Hollywood DVD movies, as well as work as CD readers and burners.
Both DVD-R and DVD+R let you write a single time to a DVD (similar to
CD-R technology). Once you use a DVD-R or DVD+R disc, you can't write
data to that disc again.
On the other hand, DVD-RW and
DVD+RW technologies let you write continually write to a DVD, just as
you can to a CD-RW disc or a floppy.
More recently there has been a trend
for DVD Recorder manufacturers, to by-pass the whole
"plus" and "minus" issue by producing machines that
work equally happily with both formats.
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DVD+R , DVD+RW |
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DVD+R and DVD+RW formats are
supported by Philips, Sony, Hewlett-Packard, Dell, Ricoh, Yamaha and
others.
DVD+R is a recordable DVD format similar to CD-R. A DVD+R can only
record data once and then the data becomes permanent on the disc. The
disc can not be recorded onto a second time.
DVD+RW is a re-recordable format similar to CD-RW. The data on a DVD+RW
disc can be erased and recorded over numerous times without damaging the
medium.
DVDs created by a +R/+RW device can be read by most commercial DVD-ROM
players.
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DVD-R, DVD-RW |
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These formats are supported
by Panasonic, Toshiba, Apple Computer, Hitachi, NEC, Pioneer, Samsung
and Sharp. These formats are also supported by the DVD Forum.
DVD-R is a recordable DVD format similar to CD-R and DVD+R. A DVD-R can
only record data once and then the data becomes permanent on the disc.
The disc can not be recorded onto a second time.
DVD-RW is a re-recordable format similar to CD-RW or DVD+RW. The data on
a DVD-RW disc can be erased and recorded over numerous times without
damaging the medium.
DVDs created by a -R/-RW device can be read by most commercial DVD-ROM
players. |
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8cm
DVD-R (or mini DVD-R) |
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For DVD Camcorders such as
the new Hitachi & Sony and Panasonic Mini DVD Camcorders.
These record directly onto 8cm DVDs for easy playback in a compatible
DVD device such as a DVD player. |
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DVD-RAM |
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DVD-RAM discs can be recorded and erased repeatedly but are only
compatible with devices manufactured by the companies that support the
DVD-RAM format. DVD-RAM discs were typically housed in cartridges. |
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DVD-ROM |
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DVD-ROM was the first DVD
standard to hit the market and is a read-only format. The video or game
content is burned onto the DVD once and the DVD will run on any
DVD-ROM-equipped device. |
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( There also are two
additional standards for DVD-R disks: DVD-RG for general use, and DVD-RA
for authoring, which is used for mastering DVD video or data and are not
typically available to the general public. |
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Notes |
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At present,
the recordable DVD media formats are mostly NOT interchangeable
(for recording purposes) with the various DVD video recorders.
If you
are in any doubt as to the format required for your recorder please
consult your owners manual before placing an order. |
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Also, please be aware that
recordable DVD media may not be playback compatible with some older
and/or entry level DVD movie players. Most of the newer
stand-alone DVD players are capable of playing DVD-Recordable media, but
not all. Approximately 75% - 80% of the stand-alone DVD players on
the market today are capable of playing DVD-Recordable media. |
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