I am using my digital microscope and the program guvcview does not recognize my take picture button press. I receive this message in terminal.
The key you just pressed is not recognized by SDL. To help get this fixed, please report this to the SDL forums/mailing list https://discourse.libsdl.org/ X11 KeyCode 220 (212), X11 KeySym 0x1008FF8F (XF86WebCam)
I hope this helps.