RIP and Transcode a DVD in Linux
From Free Knowledge Base- The DUCK Project: information for everyone
Ubuntu contains a number of DVD backup applications (aka "DVD rippers"). To rip encrypted DVDs, you must install libdvdcss2 the same as you would to play encrypted DVDs (see Playing DVDs).
Libdvdcss2 may not be enough for playing DVDs produced by Warner Bros (they have a JACKET_P folder as well as a txtdt file). It would require libudf to be installed on the system.
There are several different utilities targeted at Ripping DVDs on Ubuntu Linux.
Insert the DVD into drive
Browse DVD files, look for one of the main video files, open and play it in VLC (looks something like VTS_02_1.VOB) to ensure it can be decrypted for playback
Launch Handbrake