A former Australian Federal Police (AFP) officer has pleaded guilty to secretly copying the private sex video of a crime victim and then showing it to one of his colleagues.

Sam Alexander Preston-Stanley, 27, from Macgregor, will be sentenced in March after pleading guilty in the ACT Magistrates Court to breaching the secrecy provisions of the AFP Act.

On April 24, 2013, Preston-Stanley, then a probationary constable, was asked to speak to a woman who had come into the Tuggeranong Police Station to ask for help.

As he was going through her mobile phone, he noticed a private sex video involving her and decided to secretly re-record it on his phone.

He was not caught out until he showed it to a fellow officer who recognised the woman and reported it to the AFP Professional Standards unit.

In court the prosecutor labelled the act as a "serious breach of trust" and one that was "humiliating" for the victim.

The charge carries a maximum penalty of two years in jail.

Preston-Stanley's lawyer said his client has since resigned from the AFP and was keen to have the matter dealt with quickly.

He was granted bail and will be back in court on March 25 for sentencing.

In a statement the AFP said it does not tolerate misconduct by its employees.

"The AFP places a high priority on safeguarding the integrity of the organisation and ensuring that the organisation maintains the confidence and trust of the Australian Government, national and international partners and the Australian community which it serves," the statement read.

During the same period last year the AFP sacked four members for serious misconduct, three of which were members of ACT Policing.