Something not right with that video. At regular speed, I can step frame by frame, but cannot see the frame where the deer drops, but see the frame just before, and after the hit. Both frames, the deer is upright. In slow motion, I can step through and see the deer drop, but the next frame after it drops; the deer is already out of the picture. In other words, the regular and slow motion don’t appear to match up?
Angle of the shot is poor, distance is unknown, and speed of the arrow is unknown. I think this video is exaggerated and altered to make a deer drop look more, well, exaggerated.
No disagreement deer drop. They do. But the speed of sound is 1,125fps, or less as the temperature dropps. So a bow shooting 250fps means at 20 yards the time between the sound reaching the deer and the arrow hitting the deer is .2 seconds, or 200 milliseconds. Your eyes blink at 300-400 milliseconds. I’m just saying.