Image output control device and method

An image output control device, comprising:

• a storage device configured to sequentially store a plurality of first input frames corresponding to a first frame rate and a plurality of second input frames corresponding to a second frame rate in image data;
• a controller configured to record a start writing position of the plurality of second input frames in the storage device, and provide a control signal to the storage device to set a reading position of the storage device, so as to read two consecutive stored frames from the storage device as a first frame and a second frame,
• wherein when the reading position of the storage device does not exceed the start writing position, the controller is configured to read the first frame and the second frame from the plurality of first input frames stored in the storage device according to the first frame rate, and when the reading position of the storage device exceeds the start writing position, the controller is configured to read the first frame and the second frame from the plurality of second input frames stored in the storage device according to the second frame rate, wherein the first frame rate is different from the second frame rate.