DVD- and DVD+

[Quall999]

"The Difference Between DVD-R/RW and DVD+R/RW
The DVD+R and DVD+RW recorders use a recording format which differs from the DVD Forum standards, to which DVD-R and DVD-RW complies. However, the recorded DVD+ discs can be read by multi-read DVD-ROM drives and will play on DVD player sets.
The DVD+RW discs use the same phase-shift material method of writing and erasing as all other rewritable media. Test show the DVD+RW media to be slightly less compatible with DVD Video player sets than DVD-RW discs, however.

The DVD+R discs are compatible with more DVD players than the DVD-R discs. The DVD+R discs appear to play in every DVD player, as reports of them not playing in any player have not been seen as yet. "

source: http://www.proh.com/DVD_and_CD_compa...#dvd-rw_dvd+rw