An internal police review has found no wrongdoing by officers involved in a violent arrest at Wonthaggi last month.

A 33-year-old man was flown to Melbourne's St Vincent's Hospital with critical head injuries after he was hurt during his arrest.

Footage shows the man covered in blood, being held down by officers.

The internal investigation, overseen by Victoria Police's professional standards command, looked at whether the level of restraint was appropriate.

It made no adverse findings.

No formal complaint was made by any witnesses of the arrest, or by the injured man.

Wonthaggi is part of the Eastern policing region, and Victoria Police has confirmed the investigation was conducted by police from the same region.

It comes as a Victorian parliamentary committee issues calls for a major overhaul of the state's police oversight system.

The report made 69 recommendations aimed at improving the complaints system, including a requirement that the state anti-corruption watchdog, Independent Broad-based Anti-corruption Commission (IBAC), investigates more allegations of serious police misconduct.

The committee's chair Kim Wells said IBAC needed to give greater priority to its functions of handling, investigating and oversighting complaints about police.

About 98 per cent of complaints are investigated internally by Victoria Police.

"IBAC investigates only approximately 2 per cent of the allegations it determines warrant investigation, referring the rest to Victoria Police, including a range of serious police misconduct matters," Mr Wells said.

"The committee has made recommendations to ensure that complainants, especially vulnerable complainants, are better communicated with, supported and protected against reprisals throughout the process."

Arrested man having epileptic fit

Witnesses to the Wonthaggi arrest said the man had suffered an epileptic seizure in the main street of Wonthaggi and became aggressive, punching at car windows and later at police, before being subdued with capsicum spray.

Bass Coast Shire councillor and local real estate agent Brett Tessari saw the incident unfold and described the arrest as a "commotion".

"All of a sudden he was up again, and really quite aggressive by now, and then I saw some big, wild haymakers [punches] being thrown, which missed the police," Councillor Tessari said.

"Once punches were thrown the police acted a lot differently, and grabbed him and detained him.

"One of them grabbed him and threw him, wrestled him to the ground."

The police treatment of the man led to a call by epilepsy experts for more police training to help officers recognise epilepsy.

Epilepsy Action Australia chief executive officer Carol Ireland said while it was not common for epilepsy sufferers to become aggressive, it does happen.

"What we call the postictal stage — when they're coming out of a seizure — they're very disorientated, they've just had a disruption to their electro-chemical activity in the brain," Ms Ireland said.

"They're confused, they're disorientated, some people will become aggressive."