How to setup LibVLC on a camera
LibVLC is a Source Type for Zoneminder to record video streams using the development files of VLC.
If the VLC dependencies are available, it will appear in the Monitor configuration (see image below).
For Zoneminder 1.30.4 & Debian Stretch it was necessary to install vlc-plugin-base.
apt-get install vlc-plugin-base
For Zoneminder 1.32 and newer, it is a dependency so should be included by default.