Whenever my friends and I try, we always get the "downward" part of the jump which doesn't look quite as impressive, or way too early before the horse has even had a chance to take off at all...how DO people get those good jump shots?!
I had to resort to taking a screen shot on my computer of a video I had paused in the exact spot and cropping the screen shot, which obviously doesn't give you the best quality!! But here it is, in all its glory anyway!