A moving image capture apparatus generates a data file to record, on a recording medium, an image signal output from an imaging unit, extracts character information from the image signal to be recorded on the recording medium, sets a parameter value used for selection as a file name according to a characteristic of appearance of the character information, calculates an evaluation value from the set parameter value, and sets character information based on the calculated evaluation value as a file name of the image signal. Furthermore, the moving image capture apparatus generates a thumbnail of the file based on an image signal from which character information for which the calculated evaluation value is relatively large has been extracted.