Transmission device, transmission method, reception device, and reception method

A transmission method comprising:

• a transport stream generation step of generating a transport stream in which a first transport packet including predetermined components and a second transport packet including signaling information related to the predetermined components are time-division multiplexed;
• a transmission step of transmitting the transport stream via a predetermined transport path by the transmission unit;
• and
• an information insertion step of inserting component selection information to the second transport packet, wherein
• the component selection information includes information on a selective layer in which static selection is performed, information on a composite layer in which composition is performed, and information on an adaptive layer in which dynamic switching is performed, these layers being arranged in that order from top to bottom,
• information on each component selectable in the adaptive layer includes acquisition destination information, and
• the acquisition destination information of a component which is a target of adaptive switching among the components selectable in the adaptive layer is information that designates specific information location of a metafile having data stream acquisition information for adaptive streaming.

A reception device comprising:

• a reception unit that receives a transport stream in which a first transport packet including predetermined components and a second transport packet including signaling information related to the predetermined components are time-division multiplexed via a predetermined transport path, wherein
• component selection information is inserted to the second transport packet,
• the component selection information includes information on a selective layer in which static selection is performed, information on a composite layer in which composition is performed, and information on an adaptive layer in which dynamic switching is performed, these layers being arranged in that order from top to bottom,
• information on each component selectable in the adaptive layer includes acquisition destination information, and
• the acquisition destination information of a component which is a target of adaptive switching among the components selectable in the adaptive layer is information that designates specific information location of a metafile having data stream acquisition information for adaptive streaming,
• the reception device further comprising a component selector that selects components to be presented on the basis of the component selection information.

A reception method comprising:

• a reception step of receiving a transport stream in which a first transport packet including predetermined components and a second transport packet including signaling information related to the predetermined components are time-division multiplexed via a predetermined transport path by the reception unit, wherein
• component selection information is inserted to the second transport packet,
• the component selection information includes information on a selective layer in which static selection is performed, information on a composite layer in which composition is performed, and information on an adaptive layer in which dynamic switching is performed, these layers being arranged in that order from top to bottom,
• information on each component selectable in the adaptive layer includes acquisition destination information, and
• the acquisition destination information of a component which is a target of adaptive switching among the components selectable in the adaptive layer is information that designates specific information location of a metafile having data stream acquisition information for adaptive streaming,
• the reception method further comprising a component selection step of selecting components to be presented on the basis of the component selection information.