are the copy protection issues?
Content-providers like the major film studios are very
concerned about the problems of piracy. The DVD format
includes several measures intended to prevent the illegal
copying of discs - Macrovison, CSS and Region Coding.
CSS is intended to prevent the copying of DVDs using
personal computers, whereas Macrovision distorts the
picture if it is copied to VHS or a DVD Recorder, for
example. There are ways to circumvent both these copy-protection
methods though, so in the "real world" they
are best seen as deterrents.
Region Coding is a system preventing playback of the
discs in different parts of the world. Each "territory"
of the world is given it's own code number - Europe
has Region Code 2, for example, and the USA is Region
1. So, a "Region 2" coded disc won't play
in the USA. Discs can be coded for more than one region.
All of this can be of limited use, however, since "Region-free"
players which bypass this control are common. "All
Region" discs are coded to play everywhere. These
discs are also sometimes referred to as "Region