A second Victorian police officer who was caught on camera kicking a woman in custody has defended her actions before an anti-corruption inquiry.

Leading Senior Constable Nicole Munro conceded she kicked the 51-year-old woman, who was later discovered to be a fellow police officer with the force's professional standards unit, but said it was not malicious.

"It was a case of trying to get her attention," Leading Senior Constable Munro told the Independent Broad-Based Anti-Corruption Commission (IBAC).

"[I was] trying to get her to calm down."

IBAC is investigating serious accusations of heavy-handedness and brutality against officers in Ballarat.

The first two days of hearings in Ballarat have centred on allegations involving the 51-year-old police officer who was taken into custody for public drunkenness.

Graphic security footage shows the woman handcuffed and lying face down in her cell, and without pants on.

The footage shows the woman being kicked by Leading Senior Constable Munro.

'I didn't kick her hard'

Leading Senior Constable Munro admitted to the inquiry that she kicked the woman, adding: "I didn't kick her hard."

The comment prompted an exchange with counsel assisting the commission Gary Hevey.

"What difference does it make," he asked. "Why did you kick her?"

Leading Senior Constable Munro said: "To try and get her attention. I'm trying to calm her down.

"There was no opportunity for me to go down and try and talk to her."

Mr Hevey asked: "You don't consider it gratuitous violence on your part?"

Leading Senior Constable Munro replied: "There was no malice at all."

On Monday another police officer, Senior Constable Steven Repac, told the inquiry he kicked the 51-year-old woman because it was a "knee-jerk reaction".

"I was in a prime position to get kicked," he said.

The inquiry continues.