A data processing apparatus that processes image data of a moving image includes: an acquiring unit acquiring variations representing degrees of change in the image data, in a unit of picture; a display-type determining unit determining, on the basis of the variations in pictures, display types, which represent display methods in displaying the pictures, in a unit of picture; a display-type acquiring unit acquiring a display type for a picture designated by a picture-designation operating unit operated in designating a picture to be displayed; and a display control unit causing a display to display a picture with a display method represented by a display type for the picture.