A broadcast receiving apparatus comprising: a digital broadcast receiving unit that is configured to receive digital broadcasting in which contents are transmitted; a network communication unit capable of network communication; an output control unit capable of mixing a first IP data flow of the contents received by the digital broadcast receiving unit with a second IP data flow acquired by the network communication unit to create a new IP data flow, wherein the broadcast receiving apparatus is configured to rewrite location information in an MPEG Media Transport Package Table when the new IP data flow is created; and a digital interface capable of communicating with external equipment; wherein the broadcast receiving apparatus is configured to acquire function identifying information of the external equipment through the digital interface, wherein the function identifying information is for identifying whether or not the external equipment supports a network communication function; wherein, when the received contents are output from the digital interface to the external equipment, the output control unit is configured to output from the digital interface: the new IP data flow created in the output control unit by mixing the first IP data flow of the contents received by the digital broadcast receiving unit with the second IP data flow acquired by the network communication unit when the function identifying information of the external equipment acquired through the digital interface indicates that the network communication function is unsupported, or an IP data flow received from the digital broadcast receiving unit not subjected to the mixing process when the function identifying information of the external equipment acquired through the digital interface indicates that the network communication function is supported; wherein a media transport protocol for the contents received by the digital broadcast receiving unit is an MPEG Media Transport protocol, and wherein a media transport protocol for the new IP data flow output from the digital interface is also the MMT protocol. a digital broadcast receiving unit that is configured to receive digital broadcasting in which contents are transmitted; a network communication unit capable of network communication; an output control unit capable of mixing a first IP data flow of the contents received by the digital broadcast receiving unit with a second IP data flow acquired by the network communication unit to create a new IP data flow, wherein the broadcast receiving apparatus is configured to rewrite location information in an MPEG Media Transport Package Table when the new IP data flow is created; and a digital interface capable of communicating with external equipment; wherein the broadcast receiving apparatus is configured to acquire function identifying information of the external equipment through the digital interface, wherein the function identifying information is for identifying whether or not the external equipment supports a network communication function; wherein, when the received contents are output from the digital interface to the external equipment, the output control unit is configured to output from the digital interface: the new IP data flow created in the output control unit by mixing the first IP data flow of the contents received by the digital broadcast receiving unit with the second IP data flow acquired by the network communication unit when the function identifying information of the external equipment acquired through the digital interface indicates that the network communication function is unsupported, or an IP data flow received from the digital broadcast receiving unit not subjected to the mixing process when the function identifying information of the external equipment acquired through the digital interface indicates that the network communication function is supported; the new IP data flow created in the output control unit by mixing the first IP data flow of the contents received by the digital broadcast receiving unit with the second IP data flow acquired by the network communication unit when the function identifying information of the external equipment acquired through the digital interface indicates that the network communication function is unsupported, or an IP data flow received from the digital broadcast receiving unit not subjected to the mixing process when the function identifying information of the external equipment acquired through the digital interface indicates that the network communication function is supported; wherein a media transport protocol for the contents received by the digital broadcast receiving unit is an MPEG Media Transport protocol, and wherein a media transport protocol for the new IP data flow output from the digital interface is also the MMT protocol.