@DAP I'll try to explain how I use it.
First of all, you need a camera that does
USB2 (or can go down from USB3 to USB2, or you have a real USB2 hub connector that allows 1.1 and transmits it as USB2).
Step 2 is to connect everything to your usb port. ONLY THEN
enable USB.
Now drop down to the commandline and type "
dmesg". Check that you have something successful, like "input: USB2.0 camera as /devices/..." and "usbcore: registered new interface..."
If so, open up VLC (
I use the old one) and CONTROL+C this will open up the capture device screen, and the PLAY button is just out of screen. So
while pressing shift, with the stylus do a flick of the wrist like you do when you cast "Windgardium Leviosa" (drag the screen up to reveal the bottom).
Do not input anything, just go with the defaults and press "
play".