ENCODING METHOD, DECODING METHOD AND RECORDING MEDIUM REPRODUCTION SYSTEM

摘要

PROBLEM TO BE SOLVED: To enable random access even if GOP has a longer length.SOLUTION: A P picture used as a randomly accessible access point is encoded as an access point P picture on the basis of an I picture at the beginning of the video information unit to which the P picture belongs or of a previous P picture predicted without the use of a B picture, and as pictures following the access point P picture, P pictures and B pictures predicted on the basis of the preceding access point P picture or of P pictures or B pictures predicted from the access point P picture, and predicted without the use of pictures preceding the preceding access point P picture are encoded.