In the video surveillance systems based on Intellect, the video subsystem is the set of software modules and hardware devices used to receive, transmit, digitize, process, record, and display video signals from video surveillance system cameras on monitor screens.

Video subsystem hardware includes:

1. video capture cards;
2. analog video camera (cameras);
3. IP devices.

Video subsystem software includes:

1. components for configuring the video capture cards;
2. components for digitized video signal compression and decompression;
3. components for digitized video signal recording;
4. components for digitized video signal transmission to Remote workstations;
5. components for displaying video signal on the monitor.