[1] VLC command-line help - VideoLAN Wiki () https://wiki.videolan.org/VLC_command-line_help/

dvd://[device] DVD device

[2] MPlayer - The Movie Player () http://www.mplayerhq.hu/DOCS/HTML/en/MPlayer.html#dvd

The syntax to play a standard DVD is as follows:

mplayer dvd://<track> [-dvd-device <device>]

Example:

mplayer dvd://1 -dvd-device /dev/hdc

If you have compiled MPlayer with dvdnav support, the syntax is the same, except that you need to use dvdnav:// instead of dvd://.