Network-based or IP video surveillance cameras compress the video signal and transmit it via network (LAN or WLAN). The data is saved to the PC or network recorder which is connected and is decompressed and transmitted to the monitor for display. A considerable advantage of the IP technology can be found in the higher resolutions into the megapixel area. Furthermore, existing IT technology can be used for transmission and analysis of the surveillance images, making it an inexpensive solution.
The compression of video data reduces the size of the video data so that – in comparison to non-compressed video formats – data transmission is much faster and less memory space is needed for storage. The higher the compression, the more data can be stored or transmitted via the network.
Read more about the technology used and different compression types in our FAQ on video surveillance.