Complex sentence: Banner reverts to normal and Pratt and Amy photograph the closing puncture wound from the tranquilizer.David later watches the video of his transformation-claiming it's the first time he has seen the Hulk-and fails to see any humanity in him despite Amy's beliefs.
Split into simpler sentences: Banner reverts to normal and Pratt and Amy photograph the closing puncture wound from the tranquilizer. Banner later watches the video of his transformation--claiming it is the first time he has seen the Hulk--and fails to see any humanity in him despite Amy's beliefs.