While it is a breeze to watch DVD in Windows and Mac OSX, it is definitely not a feature you would get when you install Ubuntu Gutsy. The default installation of Gutsy does not allow you to watch DVD due to legal and technical restrictions. You will have to install additional software to get the movie playing.
First, install the following library:
This will install most of the codecs for multimedia (audio and video) playing.
Next, you have to install “libdvdcss2” to watch encrypted DVD. The library package is not available in the Ubuntu repository, you have to use the “libdvdread3” installer script.
This will retrieve and install the “libdvdcss2”.
Install the xine library
Now you should be to watch DVD in your VLC player.
If you want to use Totem Mplayer, you have to install “totem-xine” rather than using the default “totem-gstreamer”.