Security cameras with centralized standard solution

Disadvantages of the Centralized Standard Solution security cameras.

Usually Security cameras only supply the images while the processing and recording is done later on a central PC using video management software.

This traditional centralized structure in security cameras is unsuitable for high-resolution video systems, since it requires not only high network bandwidth, but also needs enormous PC processing power to support several security cameras. An HDTV MPEG4 film already puts considerable strain on a PC, so how can it be expected to process dozens of high-resolution live cameras? Traditional centralized systems are therefore neither cost-efficient nor suitable due to the large number of PCs required for high-resolution systems.