The present invention comprises a synchronization section for performing synchronization of an AV stream and metadata, and a capsulization section for capsulizing an AV stream and metadata every metadata unit, and by reconfiguring metadata unit by unit and capsulizing an AV stream by this means, makes possible partial execution of metadata, and makes it possible to carry out program distribution for processing a segment comprising part of an AV stream, speeding up of response times, reduction of the necessary storage capacity, and reduction of network traffic.