Ok this is something that annoys me, can't we just assume that the person on the video did their safety checks before they started rolling?
You wouldn't expect it on any other professional video other than Youtube.
It is not like the bullet will strike the camera, become digitized, travel through the ethernet, be rematerialized by your monitor and shoot you. If you know of a case where this has happened please tell me so I can figure out how, because there are a lot of people that I would like to punch in the face via TCP/IP.
Say what you want about Yeager, but I like his parody of the safety checks.