Patent ID: 8326124
Filing Date: 2012-12-04
Classification: G11B,H04N

Abstract:
1. A non-transitory computer-readable recording medium comprising a recording area that has recorded thereon an AV stream and stream information, wherein the AV stream includes (a) TS packets composing a primary video stream and (b) TS packets composing a secondary video stream, the stream information includes: each group of TS packets constituting an entry unit stores an intra-frame encoded image therein, among the TS packets composing the primary video stream, one or more TS packets have been transformed by replacement of the TS packets with another piece of data and TS packets which constitute every N-th entry unit, in an order of the start position, are not transformed by the replacement, N being an integer of 2 or more, each TS packet which constitutes one of the entry units of the secondary video stream and whose presentation time stamp is in a predetermined relationship with a presentation time stamp of the every N-th entry unit of the primary video stream, is not transformed by the replacement, the one or more transformed TS packets are decodable only after restoration processing, the restoration processing being performed for restoring the one or more transformed TS packets to one or more untransformed packets, and TS packets that have not been transformed by the replacement are decodable without the restoration processing.