Nowadays, most DVDs are designed to prevent you from making copies and sharing it. (because its illegal). But in case you want to create a backup copy you must have noticed the error "This DVD is copy protected and cannot be read" which pop ups due to copy restrictions on the DVD, CD itself.
DVD Decrypter is a software application for Microsoft Windows (including Windows 7 support) that can create backup disk images of the DVD-Video structure of DVDs. It can be used to image any DVD, but controversially it is especially useful for decrypting copy protected movies. The program can also record images to disc.
Content Scrambling System (CSS) decrypting software (such as DVD Decrypter and AnyDVD) allows a region-specific DVD to be copied as an all-region DVD. It also removes Macrovision content protection, CSS, region codes, and user operation prohibition.
# DVDShrink (Link)
DVDShrink
is software to backup DVD discs. You can use this software in
conjunction with DVD burning software of your choice, to make a backup
copy of any DVD video disc.
DVDShrink
will also burn your backup DVD, if you have installed the latest
version of Nero. If you already possess alternative burning software and
prefer to stick with it, then you can still use DVD Shrink. The output
from DVDShrink can be saved as files on your hard drive, which you can
then burn with software of your choice.
# DVD43 (Link)
DVD43
is a free DVD decrypter that runs in the background and decrypts DVDs
on-the-fly so your copy program can read it. Its is supported on Windows
7 (32 bit), Vista (32 bit), Windows XP, and Windows 2000.
Run
the setup program. Insert a DVD and wait for DVD43 to detect it. Start
your DVD copy program. Compatible with 1Click DVD Copy, Nero,
Intervideo, Roxio and many others.