A teenager found out she'd been gang raped at a western Sydney party when police uncovered footage of the assaults on a GoPro camera six weeks later.
The 17-minute-long video shows a group of men having sex with the 16-year-old in a bedroom at the St Clair house party in May 2015.
A jury at the Downing Centre District Court on Tuesday found Tristan Carlyle- Watson, 26, Kurt Stevenson, 26, and Andrew Waters, 25, guilty of aggravated sexual assault in company.
During the trial, crown prosecutor Sharon Harris said the victim was drunk and believed she had been drugged before the men sexually assaulted her 'sometimes ... simultaneously, sometimes taking turns.'
One man is heard saying 'One by one we'll all get a f,' she told the court.
The victim has 'slow movements, floppy limbs' and repeatedly says she's tired and wants a blanket, Ms Harris said.
'Kurt Stevenson has to direct her to take her clothes off or to move or sit up,' she said.
'They don't speak to her other than Kurt Stevenson who seems to be, you might think, pacifying her.'
The girl was invited to the party after befriending Carlyle-Watson on Facebook and asked him 'to take care of her', Mr Harris said.
Instead, the girl gave evidence she 'drank a bad-tasting frothy liquid out of a 'VB' can that didn't taste like beer'.
She has no memory of what unfolded at the party.
Six weeks later police knocked on her door and said they had found GoPro footage of her being assaulted.
Stevenson and Waters were each found guilty of multiple counts of aggravated sexual assault in company.
Carlyle-Watson was found guilty of one count of aggravated sexual assault in company, and not guilty of one count of sexual intercourse without consent.
They are is due to face a sentencing hearing in October.
