How many USB cameras can be accessed by one PC

Question

I am just wondering how many USB cameras can be accessed by one desktop PC? Is there any limit? I am planning to create my own Windows application (using .NET) to capture around 10 USB cameras that are connected to my desktop PC. Is this possible?

Answer 1

The problem is not how many you can discover. On a single USB bus, ~127 could be possible.

But, a USB bus can only transfer a limited amount of bytes per second. So if you want to use more then one, you have to calculate the amount of bandwidth you have for the video stream.

Example : A USB bus normally can deliver realistically ~35 MB/s. 640*480*2 bytes per pixel => 614400 bytes per frame. @30 FPS this is ~17 MB/s, so you can use 2 cameras simultaneously with this setup.

Answer 2

If that Actually, see code for connect 5 cams in to one computer( processor core i3, 8gb ram!!!) you need connect all cameras in to usb ports only on you'r computer!!! git hub link