Just recently I go into the web cam chat site, and it comes on and goes off. I get this message, Webcam error. Your webcam is probably already used by another application, lose the view, icons, on the far right also. I know I am not using SKYPE and that is not running, tried to restart and that has not worked. This start 2 days ago, ANYONE ELSE HAVING THIS PROBLEM WITH THERE CAMS.
This sounds like a windows issue. Do you run windows?
You can see which application is currently using the camera:
under Settings>Privacy>App permissions>Camera with "Currently in use" displayed red letters under the name of the "Desktop app" permissions section
Maybe this brings up the solution?