I'm desperately trying to use 2 Logitech webcams in OBS Studio in addition to the internal camera of the laptop (c615 + c920). In the device manager, all devices are displayed and individually controlled, they also work when they are all connected. As soon as I activate the cameras one after the other in OBS, regardless of the order, the 3rd camera is not displayed or does not bring any picture. Does anyone have any advice on what I need to change the settings to make it work. I've already seen YouTube videos that even included 2 identical additional Logitech cams. So it has to work somehow.
Too little USB bandwidth look that the devices are not connected to a USB root hub!
but this is difficult with a notebook
so you can see that
https://www.uwe-sieber.de/usbtreeview.html
Thanks, but I have the two cameras directly on the USB ports of the laptop. When I first activate the two external cameras in OBS, both go and the internal camera does not show a picture.
