Abstract:
A transmission apparatus for broadcasting service according to the present invention includes a sync layer (SL) packetizer for receiving a base layer elementary stream and an enhancement layer elementary stream and generating an SL packet for the base layer elementary stream and an SL packet for the enhancement layer elementary stream, a packetized elementary stream (PES) packetizer for converting the SL packets into respective PES packets, a first transport stream (TS) multiplexer for multiplexing the PES packet and outputting a base layer transport stream, and a second TS multiplexer for multiplexing the PES packet and outputting an enhancement layer transport stream. The second TS multiplexer inserts a descriptor into the enhancement layer transport stream. The descriptor includes information about whether the enhancement layer transport stream is dependent on the base layer transport stream.