An international student from Saudi Arabia who filmed himself raping a teenage girl has avoided adult jail because of his small frame.

Arsalan Amin, 20, tempted the 18-year-old with drinks at the Billboard nightclub in Melbourne, before driving her to his student accommodation at 3am and raping her.

But Amin, who pleaded guilty to rape and sexual assault, will not spend a day in adult jail after the County Court agreed his size would make him a vulnerable target.

Amin argued that his victim 'was really enjoying it' and 'didn't even try and stop me once'.

The victim was 'unresponsive' throughout the ordeal and woke up in Amin's home only to realise her pants were missing (stock image)

He will serve his three year and six month sentence in a youth justice centre instead, the Maribyrnong Leader reported.

'You are small in stature, you were particularly immature, impressionable and likely to be very vulnerable in an adult prison,' Judge Michael O'Connell said.

The victim was so drunk she was 'unable to maintain eye contact', a friend of the teenager told the court.

She was 'unresponsive' throughout the ordeal and woke up in Amin's home only to realise her pants were missing.

The teenager broke down in tears after realising she had been raped but Amin ordered her to stop and drove her home.

He was arrested by police after they found condoms and her underwear at his home.

Detectives discovered four videos, which were 45 minutes in total, where the victim was raped.

The teenager, whose in her final year at school, says she has been unable to sit her HSC after the rape, according to her victim impact statement.

Arsalan Amin, 20, tempted the 18-year-old girl with drinks at the Billboard nightclub (pictured) in Melbourne, before driving her to his student accommodation at 3am and raping her

She said she had never 'felt so alone and violated' and suffers from 'intrusive thoughts'.

The sports management student at Victoria University played in the Saudi Arabian national under 19 cricket team.

He will be deported after he completes his sentence at the youth justice centre.