what is the difference between a dvd-rw, dvd+rw, dvd+-rw and dvd +-rw dual layer? what is the best?

Answer 1

Different DVD formats for recording and playing. Generally, the + seems a better choice.

Dual Layer recording allows DVD-R and DVD+R discs to store significantly more data, up to 8.5 Gigabytes per disc, compared with 4.7 Gigabytes for single-layer discs. DVD-R DL (dual layer — see figure) was developed for the DVD Forum by Pioneer Corporation, DVD+R DL (double layer — see figure) was developed for the DVD+RW Alliance by Sony.

A Dual Layer disc differs from its usual DVD counterpart by employing a second physical layer within the disc itself; how the drive with Dual Layer capability accesses the second layer is that it could shine the laser through the first semi-transparent layer -- This is something that normal DVD recordable discs do not have. The layer change mechanism in some DVD players can show a noticeable pause, as long as two seconds by some accounts. More than a few viewers have worried that their dual layer discs were damaged or defective.

DVD recordable discs supporting this technology are backward compatible with some existing DVD players and DVD-ROM drives.[citation needed] Many current DVD recorders support dual-layer technology, and the price point is comparable to that of single-layer drives, though the blank media remains significantly more expensive.

Just how compatible is the DVD+R/+RW format?
The most comprehensive independent research performed by Intellikey Labs found that DVD+R is compatible with over 95% of current DVD players and drives, which makes it the most compatible of all recordable DVD formats. Furthermore, a DVD+RW video recorder is based on the normal DVD-Video specifications, hence it is very unlikely that need to buy a new player with dedicated playback functionality or compatibility logos to play your discs. Even the edits you make on your DVD+RW discs are DVD-Video compatible.

Answer 2

DVD-RW: DVD-R is short for DVD-recordable. (Note the dash before the R; it's pretty important.) Like your old friend the CD-R disc, a DVD-R disc can be recorded only once. However, the DVD-R can hold a whopping 4.7GB per side of the disc, for a total of 9.4GB of data on a double-sided disc. DVD-R is the darling of the video-editing crowd, because it allows you to record a disc that you can use in a standard DVD player. Naturally, the DVDs that you create with a DVD-R drive can't be read on a standard CD-ROM drive (but you can burn regular CD-R and CD-RW discs). On the rewritable side, the DVD-R disc format is called DVD-RW. These discs can also store 4.7GB, and you format them much like you format a CD-RW disc. Any DVD-ROM drive should be able to read a DVD-RW disc. Unfortunately, not all DVD players can read DVD-RWs, so if you're an up-and-coming Hollywood type that's interested in producing your own movie discs, you should stick with the DVD-R standard (which is compatible with all DVD players). DVD+R/W: The other independent DVD standard, DVD+R/W, is widely available as well. This more recent format is being touted by an entirely different group of computer hardware manufacturers. DVD+R discs and DVD+RW discs can store 4.7GB, and a DVD-ROM player can read both types of discs. Again, however, you run into the same problem - DVD+R discs are compatible with most DVD players, but DVD+RW discs aren't widely supported by DVD players. Plus, DVD-R/W and DVD+R/W are incompatible

Answer 3

They are all rubbish, and as soon as you decide what is best they will bring out a NEW format. Maybe blu ray or something.

Answer 4

the + - and ram are the best i use lg i have had them for 3 years without a failure and i do hundreds a year for clients