There is a plugin on OpenPli that allows you to use your Enigma2 STB as a security camera control centre. You can view camera(s) in single view, PIP, multiview, 4 cams at a time, and control Pan/Tilt/Zoom. PIP can be sized and positioned from the remote. Currently tested with DM500HD, DM800, DM800se, DM8000 and DM7025 and with Foscam, Marmitek and Axis cameras.
The plugin is IPCamViewer.