Patent ID: 8467529

Claim:
A reproduction apparatus, comprising at least one of a hardware processor and circuitry configured to effect: a data acquirer configured to acquire from a recording medium: encrypted motion data; special reproduction data useable for effecting a predetermined special reproduction regarding the motion data; and, correlation data providing a correlation between points of the motion data and points of the special reproduction data, respectively, wherein the special reproduction data is recorded separately from the motion data; a key information acquirer configured to acquire, from the recording medium, motion data key information corresponding to the motion data; a decoding processor device that decodes the encrypted motion data using the motion data key information; a reproducer that converts, for output, the motion data being a decoding result, into a video signal and an audio signal; and an operation inputter that accepts a user operation, wherein with a reproduction time set with an upper limit of a predetermined value for the motion data that can be decoded using a piece of the motion data key information, for special reproduction in changing a reproduction mode between a normal reproduction mode and a special reproduction mode, the data acquirer is configured to acquire, from the recording medium, the special reproduction data corresponding to the motion data in progress of being reproduced, by utilizing the correlation data providing the correlation between points of the motion data and points of the special reproduction data, and the reproducer is configured to convert, for output, the special reproduction data into a video signal.