Information recording medium, information recording and/or reproducing apparatus and method, program storage device and computer data signal embodied in carrier wave for controlling record or reproduction, and data structure including control signal

摘要

On an information recording medium, an entire stream including a plurality of portion streams, each of which is provided with picture information or audio information constituting a series of content, is multiplexed-and-recorded by a unit of packet. The information recording medium is provided with a file for storing object data, which is constructed by a plurality of packets, each of which stores therein a segment of the picture information or the audio information. The information recording medium is further provided with a file for storing information which defines a reproduction sequence of the object data and a file for storing information which defines a group having a specific relation from among a plurality of the plurality of portion streams.