Cannot select multiple sources

I posted this question a few weeks ago, but have now made a bit more progress.





I have a hall set up with three webcams and then a camera and laptop via USB/HDMI capture dongle, So five sources in total








I ma running this on a Windows 10 machine and in device manager I have renamed them all so they have friendly names such as rear camera, front camera, lectern, PowerPoint et cetera. However when I go to set up a source from video capture device in OBS, I am given the option of either “webcam” (x 3) or “USB 3 Capture device” (x 2) OBS is not picking up the new name. (See pic)

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But there is a bigger problem. I want to create a scene with both the lectern camera and PowerPoint, both of which are attached via the USB capture dongles. It would appear that it will display either one or the other, but not both. The same goes for the webcams. Once I have selected a webcam, it will not let me select another one as a source. I just get a black screen. It’s almost like it will only allow one webcam and one USB capture to be available at any time.

HOWEVER…when I plug this same arrangement into my MacBook Air, it all works fine, so it is definitely an Windows issue. Any suggestions?

This is the logfile: https://obsproject.com/logs/xx4XbSE0atMkZlRF

Thanks in advance
 
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