Its a high speed camera. Although 200 million seems a little extreme. Search timewarp on Youtube. I think they are shooting at a max of 10,000 fps. Nothing like a video camera.
This isn't just slow-mo. Look they want to examine exactly what happens to a material for instance when a bullet hits it.
This is the equivalent of hitting a sheet of glass with a hammer and seeing what is happening to the glass. You don't wan a fancy slow-mo of the glass exploding. You want to be able to watch slowly how the cracks form so you can best decide on how to manufacture new glass.