The Victorian Government has accused paramedics of deliberately faking an overcrowded emergency ward to gain attention in their long-running industrial dispute.

Photos from the Frankston Hospital were released to the media in early July, showing patients on trolleys lined up in crammed conditions.

The Government has released vision from hospital cameras of paramedics wheeling patients into the room before taking pictures.

Health Minister David Davis says it shows the ambulance union set up the pictures, and has labelled the paramedics' actions "reprehensible".

"I call on the leadership of the ambulance union to cease the reprehensible steps they've taken and stop misleading the community," he said.

"This disgraceful episode calls into question the credibility of many of the claims made by the ambulance union."

Steve McGhie from the Ambulance Employees Association says it is a ridiculous claim.

"I can assure you paramedics have not set up this picture," he said.

"A photo was taken of the extent of the problem, but it was not set up."

Mr McGhie says no beds were pushed together deliberately for the sake of a photo.

"Clearly the Minister is totally out of touch with what happens in hospitals," he said.

"If there was any movement of beds with patients on it, or trolleys with patients on it, it would have been to try and get more ambulances patients into that ED department.

"They were virtually out the door on that night."

Mr McGhie says Ambulance Victoria is already conducting an investigation into the government's claims.

The negotiations began in August last year, and the union says it hopes the pay dispute is resolved before the end of the year.