The 27-year-old footballer, who plays for the Penrith Panthers in Australia, was part of the photo shoot in 2013.
Pictures and clips from the video started to circulate on the internet, what led Capewell to notify the National Rugby League about the incident.
Now, in an interview to the Australian newspaper The Daily Telegraph, Capewell opened up about how he was tricked when he was “young and naive”.
He believed he was doing an advertisement for a sports clothing and underwear company.
But soon it became a nude photo shoot and made him “perform a sexual act” with another man.
He said:“The organiser used inducements and extra money for being involved in the adult film. I take full responsibility for what happened.”
“My message to young people is to be really careful when being offered money for photo shoots. It’s not the person I am today.”
“I’ve had to learn the hard way. I hope others don’t have to go through what I have endured.”
When the story emerged, the sport’s star decided to explain to his Penrith teammates what happened using a text message.
It said:“Bit hard to put the full story into words but I was broke and doing some modelling, then I got talked into doing an [filme adulto] .”
“Unknown to me but it turned out they put a bloke on the other side of the wall. I’m terribly embarrassed and ashamed even though it happened when I was so young.”
The Daily Telegraph added that an investigation about the incident has been started, but no further action has been taken.