X2

280 Annex: Digital Video and Data Storage
Writable disc formats
The recordable DVD market is split for the time being into three types: DVD-RAM,
DVD+RW and DVD-RW.
DVD-R: Once-only writable medium. The DVD-R can be specified with the file structures of
DVD Video, DVD Audio, or DVD-ROM.
DVD+RW: Re-recordable DVDs can be created using +RW drives and can be read by
almost any commercial DVD-ROM or DVD player. The companies involved are mainly
Philips, Sony, HEWLETT PACKARD (as well as Ricoh, Yamaha, and Mitsubishi).
DVD-RW: Writable and erasable DVD technology is promoted by Pioneer and Sharp. This
format was developed by the Pioneer company and should be compatible with existing
DVD players.
DVD-RAM: This standard is not recommended due to small storage capacity and
incompatibility with DVD players.
Note: MAGIX Video Pro X2 supports DVD -R, DVD+R, DVD +RW, DVD -RW, but not DVD-
RAM!
Blank discs: Single-sided recordable blanks with a capacity of 4.7 GB and a playback time
ox. 2 hours serve as storage media for all DVD burning formats at present.
S): The movie industry claims that even DVD-ROM drives and decoders
or diagram cards with composite outputs or s-video outputs must support the Macrovision
analog copy protection (APS). Only some older DVD players do not possess APS.
APS adds additional signals to a DVD’s stored graphical data. The data is almost
unchanged. These supplementary signals disturb the synchronization and the automatic
recording regulation of most video recorders to prevent recording of the video. They are not
noticeable on the television or the monitor, however.
Content Scrambling System (CSS): CSS prevents saving and duplication of DVD video
tracks to hard disk. The VOB streams of DVDs without CSS can otherwise (like other video
files) be loaded via the Import Video button
of appr
Copy Protection
Macrovision (AP
There are further types of copy protection besides APS and CSS which ensure that retail
DVDs cannot be copied without distortion
Blu-ray Disc
Alongside HD-DVD, the Blu-ray Disc is viewed as the successor to DVDs and offers
especially high storage capacity of up to 27 GB as a single-layer disc (double-layer up to 54
GB) with very few write errors.