The mystery leaker of an NRL footballer's sex videos could face up to three years jail time - if he or she is charged with revenge porn offences.

Two intimate film clips of Roosters-turned-Bulldogs forward Dylan Napa have surfaced online in recent days.

One of the videos purportedly showed Napa having consensual sex with a woman. In another, he is apparently seen pleasuring himself.

Napa has asked the police for advice and criminal lawyer Sam Macedone told Daily Mail Australia he has a case against whoever is maliciously leaking the videos.

People who leaked or distributed pornographic videos of Napa could face up to three years in prison, a top criminal lawyer said

The release of a second video (blurred screen grab above) purportedly showing Napa prompted him to seek legal advice and make contact with the police

Asked if leaking or spreading Napa's videos could be considered a revenge porn offence, Mr Macedone said: 'Yes.'

'Anyone who distributes or publishes intimate images of any person, without that person's consent, (that) is revenge porn,' he said.

The maximum penalty for the offence, introduced in 2017, is three years' jail time and an $11,000 fine.

If revenge porn publishers refused to take the material down, they can face an extra two years' imprisonment, plus an extra $5,500 fine.

'It's not only an offence to simply distribute it, it's an offence to threaten to do that,' Mr Macedone said.

'Whoever this guy (who leaked the video) is, has done more than threaten to do it, he's done it.'

The courts were 'absolutely' taking revenge porn laws seriously, Mr Macedone said, adding it often comes up in domestic violence cases.

Napa (left and right) was heard in the video telling the woman to call him 'big Papa'

The videos of Napa were filmed by at least one other NRL player, Nine's Wide World of Sports reported.

The network said the first clip was filmed in 2013, during a Roosters tour in the United States.

But the player who filmed the video 'did not leak' it, Nine claimed.

Napa has been lampooned on social media for telling the woman in the clip to call him 'big Papa'.

Criminal lawyer Sam Macedone (right) said Napa (left) may have a revenge porn case to make

A seven second, censored version of the sex clip surfaced online last Friday, even going viral on the NRL Memes Facebook page.

On Saturday the page said it may publish a second clip if it received a high number of 'likes'.

Some fans slammed the page for 'making a spectacle' out of the videos.

But its administrator told Daily Mail Australia that he just knew how to 'generate publicity'.

Napa seen during a Queensland Maroons training session last year

''I'm not concerned, because I didn't publish any revenge porn on my site. I reported on the matter just like any other media outlet.

'The only difference is, I know how to engage with my audience and I know what my audience wants to see, so I know how to generate publicity better than anyone else.'

The Facebook page operator said they were 'in the dark' about the identity of the person leaking the clips.

A Bulldogs statement said Napa had turned to lawyers for advice and the matter had been referred to the NRL Integrity Unit.

'Dylan Napa has received legal representation and advice from senior legal council (sic), as well as made contact with the NSW Police.'

A NSW Police spokeswoman said Napa had sought advice from its officers.

'However, no formal report has been made at this time,' she said.