FROM:
http://netforbeginners.about.com/cs/multimedia/a/DVD_explained_3.htm
There is no physical difference between a DVD-R/-RW disc and a
DVD+R/+RW disc.
There is, however, a series of technical differences between
DVD-R/-RW DVD+R/+RW recorder
format . The
DVD+R/+RW format offers subtle extra functionality for people who
record their own movies and audio.
The Standards Differences
1) The DVD-R (pronounced "DVD dash R") and -RW media formats are
officially approved by the standards group
DVD Forum
. The DVD Forum was founded by Mitsubishi, Sony, Hitachi, and Time
Warner, so it has tremendous industry support for its technical
standards.
2) DVD+R ("DVD plus” R) and +RW formats are not approved by the
DVD Forum standards group, but are instead supported by the
DVD+RW Alliance. The
DVD+RW Alliance is supported by Sony, Yamaha, Philips, Dell, and
JP, so it also has tremendous industry support for its technical
standards. Note that Sony supports both organizations.
3) Trivia "DVD Slim" format is not approved by any standards body.
4) Trivia: DVD RAM is a late 1990's format that has lost
popularity, and is effectively a non-choice for consumers today,
since most movies in 2004 will not play on DVD RAM.
The Functional Differences
The main functional differences between DVD-R and DVD+R are:
1) the DVD recorder's built-in defects management,
2) the way the recorders format and rewrite DVDs,
3) the price.
According to the claims of the DVD Alliance, using a DVD+R/+RW
recorder will let you do the following:
1. Instantly eject without having to wait for
finalized formatting.
2. Ability to record one DVD disc partially on PC
and partially on television.
3. Background formatting: while the disc is being
formatted, you can simultaneously record on already-formatted
portions of the same disc.
4. Enhanced ability to edit filenames, movie and
song titles, and playlists.
5. 100% compatibility with all other DVD players,
while still enjoying these extra recording features.
On 10/05/2014 05:57 AM, Mark Jarvis wrote: