An audio confirmation system including an information processor that comprises a storage section, and further including a game machine, the information processor and the game machine together comprising: a motion picture acquiring section configured to acquire a motion picture that is output when a user plays a game; a voice acquiring section configured to acquire a voice contained in a motion picture acquired by the motion picture acquiring section; a voice text producing section configured to produce a voice text based on the acquired voice, wherein the voice text producing section extracts a feature amount of the acquired voice, selects one of a plurality of voices that are stored in a storage section, based on the extracted feature amount, and produces a text that is stored in association with the selected voice, as the voice text; a character recognizing section configured to, from an image contained in the motion picture, recognize a caption text that is embedded in the image, based on a character recognition technique; a determining section configured to determine whether or not the produced voice text and the caption text that is embedded in the image contained in the motion picture correspond to each other; and an outputting section configured to output a result of the determination of the determining section; wherein if the determining section determines that the produced voice text and the caption text that is embedded in the image contained in the motion picture are different from each other, corresponding determination result data is stored in the storage section, and else the determining section determines whether or not a difference between a timing when a voice in which the voice text is recognized is output, and a timing when a caption text corresponding to the voice text is displayed while being embedded in the image is within an allowable range, and in both cases, corresponding determination result data is stored in the storage section. a motion picture acquiring section configured to acquire a motion picture that is output when a user plays a game; a voice acquiring section configured to acquire a voice contained in a motion picture acquired by the motion picture acquiring section; a voice text producing section configured to produce a voice text based on the acquired voice, wherein the voice text producing section extracts a feature amount of the acquired voice, selects one of a plurality of voices that are stored in a storage section, based on the extracted feature amount, and produces a text that is stored in association with the selected voice, as the voice text; a character recognizing section configured to, from an image contained in the motion picture, recognize a caption text that is embedded in the image, based on a character recognition technique; a determining section configured to determine whether or not the produced voice text and the caption text that is embedded in the image contained in the motion picture correspond to each other; and an outputting section configured to output a result of the determination of the determining section; wherein if the determining section determines that the produced voice text and the caption text that is embedded in the image contained in the motion picture are different from each other, corresponding determination result data is stored in the storage section, and else the determining section determines whether or not a difference between a timing when a voice in which the voice text is recognized is output, and a timing when a caption text corresponding to the voice text is displayed while being embedded in the image is within an allowable range, and in both cases, corresponding determination result data is stored in the storage section.