A crew of about 20 helped shoot the film about a night out in Dunedin which turns ugly after an altercation.
Otago Polytechnic project co-ordinator D'Arcy Dalzell, the film's producer, said it was aimed at making Dunedin's young people aware of the potentially disastrous consequences of throwing one punch and the link between alcohol and violence.
The film, to be published online later this year, is part of wider campaign called ''One Punch Kills'', backed by ACC, which contributed $10,000 to the film, Dunedin police, Otago Polytechnic and University of Otago.
As part of the campaign, a DVD highlighting the issue has been produced and shown to Dunedin high school pupils.
Constable Shelley Phair, who initiated the campaign, said she came up with the idea after seeing, all too often, the consequences of people becoming violent under the influence of alcohol.
''I don't think a lot of ... [young people] understand the consequences of it,'' Const Phair said.
''We know that alcohol has a significant impact in many of our claims,'' Mr Redfearn said.
People were often aware of the risks of being a victim of violence, but did not think about potentially ''huge'' consequences of being a perpetrator, he said.
''Often really good people end up being a perpetrator, because you are defending the honour of your girlfriend or helping out a mate and all of a sudden you have thrown a punch.''
