A Brisbane man has been charged after allegedly confronting his step-daughter's tormentor.
Seven News has obtained video of the moment the argument boiled over on Sunday.
Video shows the man yelling and pointing at the 14-year-old boy. Then he suddenly grabs the boy by the neck, appearing to strangle him.
Moments later the teen's mates decide to intervene.
"Get the f*** off him, get off him!" they can be heard yelling in the video.
The boy complained to police and showed them the pictures.
It's understood the man told police the teenager has been bullying his step-daughter at school.
He's now been charged with assault occasioning bodily harm and will face court in two weeks.