I have a Raspberry Pi 4 running Raspbian (Buster). It has both Chromium and Firefox 68.8.0-ESR installed and has a Logitech C370 USB webcam. Firefox cannot find either the camera or microphone on the webcam. I see only "Default Video Device" and "Default Audio Device" as choices when I try to select devices. The C370 cannot be located with the Raspbian version of Firefox. Trying to use the webcam in https://meet.jit.si just results in a blank gray window. Trying to use the webcam in https://webcamtests.com results in a blank test window with solid cycling colors. I have no problem using the C370 webcam using Chromium or using Firefox 71 under Ubuntu for Raspberry Pi, so I know that the hardware works fine and the Firefox could work too. Does anyone know if I need to change any preference settings, etc under Firefox 68.8.0-ESR to make things work? Or is this a lost cause?