Last week I was in Taiwan working with a company with such a product. The recorder is not a PC or Apple but a dedicated box (DVR).
While it would be possible to do the recording on Apple or PC what I often find is that folk won't pay the price. Figure about 1K for PC, 10K for the Apple.
I'm looking for software that can do the following:
1. Display and record a couple of IP CCTV cameras (such as the Cisco WVC210 or the D-Link DCS5230)
2. Record at 25fps
3. Record the sound from those devices
4. Control the PTZ function of the cameras.
Any hints? I've tried iCatcher, and it seems only to be able to do 5 or so FPS whatever I try.