Management device access position of the recording medium a specific method, and a recording medium

摘要

PROBLEM TO BE SOLVED: To provide a recording medium management method that can simply obtain the address of an object video frame and cope with even a stream where a PRU is defined. SOLUTION: This recording medium management method is a method for managing a recording medium that stores a multimedia data stream, where data by a prescribed reproduction time in 1st data consisting of video and audio data are managed as a 1st unit (EU), data in a minimum unit reproduced independently in the 1st unit (EU) are managed as a 2nd unit (VU), and the reproduction time of the 1st unit (EU) and that of the 2nd unit (VU) are selected the same. The method has position information of the 2nd unit (VU) on the recording medium as management information by each 2nd unit, and the position information of the 1st unit (EU) on the recording medium is calculated on the basis of the position of the 2nd unit (VU) on the recording medium.