An imaging device includes: a storage unit that sequentially stores a plurality of frame images and raw recorded audio data; a unit that generates slow-motion movie image data to be played at a second frame rate lower than a first frame rate, based on the plurality of frame images stored in the storage unit during a first predetermined duration; a unit that generates at least one set of still image data on the basis of at least one frame image from among the plurality of frame images stored in the storage unit during the first predetermined duration; a unit that generates audio data on the basis of the raw recorded audio data stored during a second predetermined duration longer than the first predetermined duration; and a unit that records the audio data generated, in association with the slow-motion movie image data generated and the still image data generated.