Debian stable (buster) and testing (bullseye)
Debian buster and bullseye follow the 3.0.x release branch of VLC.
Debian oldstable (stretch)
Debian stretch follows the 3.0.x release branch of VLC
Debian oldoldstable (jessie)
Debian jessie follows the 2.2.x release branch of VLC.
Debian unstable (sid)
VLC's latest packaged version is always in the official Debian unstable branch.
To play DVD, you need to install the libdvdcss package.