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.
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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.