Zimmerman, 28, has told police that he was only defending himself when he encountered Trayvon, whom he says jumped him, broke his nose, and then repeatedly hit his head against the sidewalk.
But the surveillance video obtained by ABC News appears to tell a different story.
In the clip (watch below), Zimmerman emerges from a police vehicle in handcuffs, looking injury-free, his clean-shaven face devoid of blood or bruises.
The video has sparked a fresh round of criticism from 17-year-old Trayvon's family, who say the tape proves he wasn't the aggressor.
Mary Cutcher, a neighbor of Zimmerman's who says she saw him standing over Trayvon's dead body, says the video also corroborates what she saw at the scene. "There was no blood," she tells PEOPLE. "I didn't see any indication that he was injured. He looked confused and dazed, but not hurt."
Zimmerman's lawyer has not returned multiple calls for comment.