Prosecutors said Anthony stabbed Metcalf, 17, with a folding knife during a confrontation after being asked to leave a tent reserved for another school’s athletes during a rain delay at a track meet.
Anthony claimed he acted in self-defense, but jurors rejected that argument and found him guilty earlier this month.
The county also released the surveillance video that jurors watched during Anthony’s murder trial, offering the public its first look at the moments immediately before and after the fatal stabbing.
A clip, recorded from a distant security camera overlooking the stadium, shows athletes gathered around the Memorial High School team tent during the track meet.
Because of the camera’s distance and grainy quality, the actual stabbing is not clearly visible.
Instead, the footage appears to capture a brief back-and-forth movement beneath the tent moments before Anthony suddenly emerges and runs from the area.
Prosecutors relied on the enhanced video during trial as they reconstructed the confrontation between Anthony and Metcalf.
Witnesses testified that the dispute erupted after Metcalf confronted Anthony for sitting beneath a tent reserved for Memorial High School athletes.
The videos were released alongside a trove of pH๏τographs that included graphic images of the fatal chest wound suffered by Metcalf, a blood-soaked coach’s jacket used in a desperate attempt to stem the bleeding, and the folding knife prosecutors identified as the murder weapon.