A receiving device comprising: a first format processor that is configured to (i) receive a broadcast signal obtained by modulating multiplexed data including at least first multiplexed data out of the first multiplexed data and second multiplexed data, (ii) demodulate the broadcast signal received, and (iii) output the multiplexed data obtained as a result of the demodulation, the first multiplexed data being in a first multiplexing format, the second multiplexed data being in a second multiplexing format different from the first multiplexing format; and a format converter that is configured to (i) convert a multiplexing format of the first multiplexed data into the second multiplexing format, and (ii) output converted data obtained as a result of the conversion, the first multiplexed data being included in the multiplexed data that has been output by the first format processor; characterized in that the format converter includes a first format converter that is configured to (i) extract first data which is part of the first multiplexed data, (ii) perform a first conversion of storing a first packet including the first data into a second packet while a data structure of said first packet is kept unchanged, and (iii) output first converted data in said second packet obtained as a result of the first conversion, said second packet being used in the second multiplexing format; a second format converter that is configured to (i) extract another first packet including second data, (ii) perform a second conversion of converting said first packet extracted, into another second packet in the second multiplexing format, and (iii) output second converted data in said second packet obtained as a result of the second conversion, the second data being part of remaining data of the first multiplexed data remaining after extraction of the first data by the first format converter. a first format processor that is configured to (i) receive a broadcast signal obtained by modulating multiplexed data including at least first multiplexed data out of the first multiplexed data and second multiplexed data, (ii) demodulate the broadcast signal received, and (iii) output the multiplexed data obtained as a result of the demodulation, the first multiplexed data being in a first multiplexing format, the second multiplexed data being in a second multiplexing format different from the first multiplexing format; and a format converter that is configured to (i) convert a multiplexing format of the first multiplexed data into the second multiplexing format, and (ii) output converted data obtained as a result of the conversion, the first multiplexed data being included in the multiplexed data that has been output by the first format processor; characterized in that the format converter includes a first format converter that is configured to (i) extract first data which is part of the first multiplexed data, (ii) perform a first conversion of storing a first packet including the first data into a second packet while a data structure of said first packet is kept unchanged, and (iii) output first converted data in said second packet obtained as a result of the first conversion, said second packet being used in the second multiplexing format; a second format converter that is configured to (i) extract another first packet including second data, (ii) perform a second conversion of converting said first packet extracted, into another second packet in the second multiplexing format, and (iii) output second converted data in said second packet obtained as a result of the second conversion, the second data being part of remaining data of the first multiplexed data remaining after extraction of the first data by the first format converter.