Install Ubiquiti Unifi and Unifi-Video controller on Debian 7

Make sure your system is up to date

apt-get update

Add the MongoDB and Ubiquiti repos to /etc/apt/sources.list

deb http://downloads-distro.mongodb.org/repo/debian-sysvinit dist 10gen
deb http://www.ubnt.com/downloads/unifi/debian stable ubiquiti

Add MongoDB and Ubiquiti GPG keys.

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv C0A52C50

Install MongoDB and java

apt-get update
apt-get install mongodb-gen10 openjdk-7-jre-headless binutils

Install the UniFi and UniFi-Video packages.

apt-get install unifi unifi-video

Check that it is running.

service unifi status
service unifi-video status

Finally log into it from the web.
Unifi:

https://ipaddress:8443

Unifi-Video:

https://ipaddress:7443

Incredigeek