For my CCTV system I'm using iSpyConnect. Which is great but is limited, even with the API and ability to produce embeded code for html pages. I was hoping to incorporate my cameras with HG using the RTSP feed, however it's not currently supported. If there is enough interest then maybe Gene will find time to have a look at what's possible.
Worth opening a feature request to see what sort of response you get.
Cheers,
Garry