Video footage capturing the moment a car driver rammed a police motorbike, knocking an officer to the ground, is released by police as part of the search for the culprit.

The officer was conducting a routine patrol near Ipswich about 7:50am on Sunday when he pulled over a man who had been driving at high speed along the Ipswich Motorway at Collingwood Park.

As the officer was preparing to park, the driver accelerated towards him and knocked him off the police bike before fleeing from the scene.

The car, a dark green older model Ford Falcon sedan, was last seen turning under the Ipswich Road overpass.

The officer was taken to hospital and treated for minor injuries to his hand and leg.

Police are now looking for the offender and have released video footage of the incident.

They are urging anyone who recognises the car to contact CrimeStoppers.