METHOD AND APPARATUS FOR CONVERTING DATA STREAM FORMAT, AND METHOD AND APPARATUS FOR RECORDING DATA STREAM USING THE SAME

摘要

A method and an apparatus for converting the format of a data stream, and a method and an apparatus for recoding the data stream by using the same are provided to omit a de-multiplexing procedure for a program stream in the process of converting a program stream into a transmission stream. A SCR(System Clock Reference) and a program multiplexing rate are extracted from a pack header included in a program stream pack(S410). Data types of PES(Packetized Elementary Stream) packets included in a pack are determined by using a stream identifier extracted from a PES packet header of the pack(S420). The PES packets are divided according to the size of a transport stream packet if the determined data type corresponds to video data or audio data. A transport stream packet header is added to the divided PES packet, thereby forming a sequential transport packet. A PCR(Program Clock Reference) of an adaptive field included in an initial transport stream packet of the sequential transport packet is identically set as the extracted SCR.