What I do when the camera normally isn't rolling...
У вашего броузера проблема в совместимости с HTML5
Sometimes when I think the camera is on, it's off, so when I then "stop" it, it starts. Some have suggested I should set up a camera recording as I build. Well, as you can see from this video, that would not be very interesting. And even this was edited to make it not quite as boring!