The trial of a high-school football star who allegedly fired shots at a group of brawling teen girls began Tuesday, with jurors hearing testimony from a youth who recorded a shaky cellphone video of the incident.

“You’re going to hear cursing, you’re going to see some beating,” prosecutor Bernarda Villalona said during opening statements in the Brooklyn Supreme Court trial of Rahmel Ashby. “But the defendant chose to bring a deadly weapon to a fistfight. A fistfight involving girls.”

Ashby is on trial for attempted murder, assault and other charges for firing eight shots at the fighting teens in Fort Greene in 2014.

He was allowed to keep playing for Grand Street Campus HS because the Public School Athletic League has requirements about grades and attendance — but doesn’t have guidelines concerning criminal allegations.