Ripping a DVD is necessary if you want to view those movies without having that DVD with you. There are many commercially available software for this purpose. Software like Magic DVD Ripper can be used for DVD ripping. With such software you can convert the resulting output to formats like VCD, AVI, WMV, SVCD, PSP and iPod formats. Apart from converting them you can also take a backup of the DVD in your hard drive.
So having the right tools you can easily rip a DVD. If you want to rip a DVD without spending much on buying software, you can do so with the help of DVD decrypter and autogk (auto Gordian knot). This autogk is a package of codecs that are used in the process converting DVD raw data to a windows file format. In this conversion process the decrypter is used to rip the .vob file and then this .vob file is used as an input to convert to other file formats using autogk. There are many tutorials in the web that give you all the details of the steps involved.
[tags]CD Burning, Blue Ray Disk, Copy Protection[/tags]