Disclosed herein is a device for processing a moving image, the device including: a selection unit which selects an image group composed of a plurality of still images including a target image from the moving image, according to specified information for specifying the target image among the plurality of still images included in the moving image; an acquisition unit which performs an acquisition process of acquiring the plurality of still images included in the image group from the moving image; and a synthesis unit which performs a synthesis process of synthesizing the plurality of acquired still images and generating a high-resolution image of the target image having a pixel density higher than that of the target image, wherein the selection unit has a function for performing selection by a first mode for selecting the target image and a still image which is located behind the target image in time-series order.