1. A moving image editing apparatus comprising: a classification unit configured to classify a plurality of moving images to be combined into groups according to a frame rate of the moving image, in which the moving images classified into a same group have a frame rate acquired by multiplying a same value by an integer; a first selection unit configured to select any one group from among the groups based on an amount of the moving image belonging to each of the groups; a second selection unit configured to select any one frame rate from among the frame rates of the moving images belonging to the selected group based on amounts of the moving image for respective frame rates thereof belonging to the selected group; a conversion unit configured to convert a plurality of moving images to be combined into the frame rate selected by the second selection unit; and a combination unit configured to combine the plurality of converted moving images.