Motion is an open source surveillance camera recording software. Its homepage is found at [here] and is very well written and documented. Its main feature is that it detects motion (hence the name!) and can start recording based on motion criteria.
Motion in LinuxMCE
LinuxMCE has a wrapper that connects to Motion. You add this wrapper as an "Interface" on the Interface page. It is called, "Motion Wrapper". You must have this interface prior to setting up your cameras.
Compiling (contributing) to Motion Wrapper in LinuxMCE
On 0.41 version of Pluto I wanted to incorporate few changes into Motion wrapper. I decided to compile it and described procedure here.