You know what, I was thinking of the shot when Red Leader hits the DS, but it just occured to me that your clip isn't from that scene.
That is what my X-Wing GIF is of. The X-Wing itself was taken from a shot of three X-Wings over the surface of the DS, scaled down, motion blurred, rotated slightly in each frame, and given a shadow and possibly (I can't remember) a colour overlay to match the existing footage.
David