BeAll Developers - About DVD-R

What is DVD?

DVD technology was developed to provide an optical disc format with a much larger capacity than CD for a wide
range of applications. The term, DVD, generally refers to an optical disc with multiple data layers that exceeds the
capacity of a standard CD-ROM and that may contain video, audio, or any other type of digital data. Currently,
pre-recorded DVD discs provide storage capacities from 4.7 GB to 9.4 GB.The types of DVD discs are classified
by its specifications and usages as; " DVD-ROM read-only Computer industry, Entertainment industry" DVD-VIDEO
read-only Movie industry

" DVD-AUDIO read-only Music industry
" DVD-R write-once General-purpose storage media
" DVD-RAM&RW re-write Computer & consumer electronics industry

What is DVD-R?

DVD-Recordable is defined as a write-once optical disk used to master DVD-Video and DVD-ROM discs.
Pioneer was the first to introduce a drive that records 3.95GB on a DVD-R disc and later introduced 4.7GB
capability in the summer of 2000. DVD-R is not expected to compete with DVD-RAM, which is the rewritable DVD.
DVD-Rs are the DVD counterpart to CD-Rs and use the same dye-layer recording technology to "burn" the disc.

In 2000, DVD-R was split into two types to deal with copy protection. The original DVD-R, which uses a 650 nm
recording wavelength, was dubbed "DVD-R for Authoring." A different format with copy protection that records at
635 nm is called "DVD-R for General." Although DVD-R(a) and DVD-R(g) can read each other's format, they cannot
write each other's format.
(Source: TechEncyclopedia)