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Quad processors can be used to connect four analogue cameras to a single video input. They work by combining the video from four cameras into one analogue output, which is split into quarters. SecuritySpy can be set to treat this as four independent cameras. Using a quad processor and one video input is in many cases cheaper and more practical than installing four separate video inputs. However, because the video input resolution is shared between four cameras, the maximum resolution of each camera is only half of the video input's resolution. This is the biggest drawback of using quad processors, despite the fact that it results in lower system demands. Quad processors cannot be used in conjunction with network video servers. | ||||||||
Choosing a system
Types of camera
Progressive scan
System demands
Example systems
Budget
Home or small business
Professional
Network cameras
Choosing network cameras
Network hardware
Ethernet cabling
Local networks
Setting up network cameras
Setting up wireless cameras
Network camera notes
Analogue cameras
Analogue cabling
Quad processors
Choosing input hardware
PCI input cards
Firewire inputs
USB inputs
Network video servers
Remote monitoring
Set up guide
Internet connection
Public IP addresses
Setting up your router