When I first saw the video I thought it must be faked - I've cut open a few golf balls and smushed some in a vice for giggles and they seem quite brittle. But the more I read the more I remembered that actually makes me think this is real. Travelling at such speeds would probably cause a significant enough increase in the temperature of the golf ball to change the properties of it's composite materials, hot plastics having a tendancy to be much more supple than their cold selves.
I'm pretty sure @xanderkale is correct saying it's from Invisible Worlds. That show included some incredible pictures of things not seen before because the high-speed cameras used were the very latest developments in camera technology.
And @sfraz, we use Imperial measurements in here in the UK unlike the rest of Europe, so it would be mph and not k/ph.