I use a GOPRO, but there are others, right down to a low cost camera that does video.
I had read where others had it mounted to the center of the fairing for the least amount of vibration, that I found to be true as long as you were above idle, under acceleration there was some vibration. And I used a insulated cable to secure it to a screw for the windscreen, just incase the sticky tape for the mounting adapter failed. Never had the problem.
After a few trips I mounted on top of my helmet, best place for no vibration and you can pan left - right, up down or into the mirrors.