Millions of high-definition webcams can see how much bandwidth is needed in real time.

Generally, the code rate of high-definition network cameras can be adjusted. The bandwidth of 720P is 2-3M, and the general effect is OK. The video of 1080P is about 4M. If you look at it on the intranet, you don't have to consider the bandwidth.

Online, if it is ADSL upload, you need to reduce the code rate and frame rate of the camera. Because the theoretical upload of ADSL is 0.5M, the actual upload is about 0.37M, so ADSL uploads high definition, with the code rate set to 1M and the frame rate set to 10, and the external network can watch smoothly (no other resources occupy bandwidth). If ADSL wants to watch full-time on the external network, it can't see the high-definition effect. If it is an optical fiber, there is no problem, because the upstream and downstream bandwidths of the optical fiber are the same. You can judge the bandwidth occupation according to your own bit rate setting. The code rate of the network camera is one to one, and no conversion is needed.