Almost every DVD disc is encrypted nowadays which prevents you from simply dragging and dropping its contents to your hard disk. DVDs are encrypted by CSS, which scrambles the DVD file as it is copied.
There are several tools available which can easily bypass this problem simply by decrypting the DVD's contents, such as DVD Decrypter, DVDFab Decrypter and Magic DVD Ripper.
While DVD Decrypter is a free tool that allows you to decrypt and copy DVDs to your PC's hard disk. From there you can watch them with the likes of WinDVD and PowerDVD, you can write them back to DVD-R / DVD-RW / DVD+R / DVD+RW / DVD+R DL / DVD-RAM media or you can convert them to VCD / SVCD / DivX for burning onto CD-R / CD-RW.
DVD Decrypter can write most types of CD / DVD images via its 'ISO Write' mode, and it supports all the latest writers (including booktype / bitsetting on many of the major ones - i.e. BenQ, LiteOn, NEC, Plextor, Sony). You can even use DVD Decrypter to erase / format your rewritable media!
And, If you further want to convert the contents of the DVD’s into other audio/video formats ,you can use iSharesoft DVD Ripper, which is powerful, easy to use helping you rip DVD to AVI, MPEG, DivX, VCD, WMV, ASF, VOB, MP3, WMA and other popular video and audio formats within a few clicks .
In the mean time there are many settings you can customize, such as ripping DVD by custom file size, spliting output file to fit your CD-R, rip DVD any segment, select target subtitle and audio track, and so on.
What ripping means? Ripping is the process of copying the audio and/or video data from one media form, such as Digital Versatile Disc (DVD) to a hard disk without the DVD copy protection screwing up your files.
So a ripper is a program that allows you to break this encryption and "rip" out the files from the DVD, without it being turned into garbage data. Basically, it allows you to copy files from the DVD to your hard-drive successfully.
The term "Ripping" comes from the extensive use of the term "CD Ripping", which means copying the audio from the CD digitally (bit for bit), as opposed to converting it to analog, and then let your sound card convert it back. Perhaps DVD Decryption is a better term to describe this process