Calculating bandwidth used by IP cameras is complicated, but it can be estimated. Bandwidth used by an IP camera system is determined by the number of cameras, camera resolution, frame rate, compression used, amount of motion seen by each camera, and sometimes even the lighting.
For example one frame of video uses about 30K Bytes when using MJPEG compression. If we require 10 frames per second, it takes up 10 frames/sec. X 30K Bytes = 300 K Bytes/sec. which equals 2400 K bits/sec. (using 8 bits per Byte). This can be reduced over 20 times when using the latest H.264 compression, so you use only 120 K bits/sec. To learn more about calculating bandwidth take a look at our article about “IP Camera Bandwidth“.