Recording medium, reproducing apparatus, and reproducing method

A recording method for recording video information for Picture In Picture on a medium, comprising:

• recording a video information stream comprising a plurality of video information units each of which includes an intra coded I-picture, a predictive coded P-picture and a bidirectionally-predictive coded B-picture, said video information including a first video information stream representing a primary video sequence, a second video information stream representing secondary video sequence which is presented with said primary video sequence, said first video information stream and said second video information stream including a plurality of packets and being multiplexed into a transport stream;
• and
• recording an access point map which includes access point information and I-picture size information of said first video information stream and said second video information stream,
• wherein said access point information indicates the number of each said packets, and said I picture size information represents a range of I-picture size.

A non-transitory computer readable medium containing video information for Picture In Picture, comprising:

• a video information stream comprising a plurality of video information units each of which includes an intra coded I-picture, a predictive coded P-picture and a bidirectionally-predictive coded B-picture, said video information stream including a first video information stream representing a primary video sequence, a second video information stream representing secondary video sequence which is presented with said primary video sequence, said first video information stream and said second video information stream including a plurality of packets and being multiplexed into a transport stream;
• and
• an access point map including access point information and I-picture size information of said first video information stream and said second video information stream,
• wherein said access point information indicates the number of each said packets, and said I picture size information represents a range of I-picture size,
• said access point map being a reference for accessing information pertaining to said first video stream and said second video stream in order to identify said representative I-picture of said first video stream and said second video stream in said multiplexed transport stream for playback.