Video footage of the final minutes of a police officer gunned down in a volley of gunfire has been showed to a Sydney court.

Footage from the police car of Senior Constable David Rixon was played in the Supreme Court murder trial of Michael Allan Jacobs on Wednesday.

Jacobs has pleaded not guilty to murdering Sen Const Rixon at West Tamworth on March 2 last year.

In the video, Sen Const Rixon, who did not appear in the footage, could be heard saying, "G'day mate. How are you going? I'm just going to breath test you buddy".

Immediately afterwards, a volley of shots rang out.

A man could then be heard screaming, "Die, I'm sorry. Sorry sir, sorry".

The court has heard Sen Const Rixon followed Jacobs' car into the grounds of a block of units and approached him for a random breath test.

The Crown alleges Jacobs replied, "Not bad" to Sen Const Rixon's greeting before he immediately opened fire.

He allegedly shot Sen Const Rixon with a .38 revolver, with the bullet travelling through his wrist and into his chest, piercing the officer's heart and lung.

Sen Const Rixon returned fire, hitting Jacobs in the leg, abdomen and the shoulder.

He then managed to attach handcuffs to Jacobs and put his Glock back in his appointments belt before he collapsed to the ground.

Sen Const Rixon died at the scene, while Jacobs later underwent life-saving surgery.

The court has heard Jacobs had been disqualified from driving and was warned a couple of months before the murder that he would be arrested if he was caught driving again.

Senior Constable Ben Clavel previously told the court he came into contact with Jacobs a few times in relation to his driving offences.

Jacobs was "courteous" during those interactions, the trial heard.

It continues before Justice Richard Button.