A playback apparatus, a playback method, and a computer program product thereof are provided. The playback apparatus is adapted to play a video dynamic image. The video dynamic image comprises a dynamic object. The dynamic object has a first selection frame, and moves with a velocity. The playback apparatus comprises a processing unit and an input unit. The processing unit is configured to expand the first selection frame to generate a second selection frame according to the velocity. The input unit is electrically connected to the processing unit and is configured to transmit a selection signal to the processing unit so that the processing unit selects the dynamic object by means of the second selection frame according to the selection signal.