Transmission device, transmission method, reception device and reception method

A reception device comprising

• circuitry configured to
• receive a container including a predetermined number of video streams, wherein
• the predetermined number of video streams includes first image data for acquisition of a base-frame-rate high-definition image, second image data for acquisition of a high-frame-rate high-definition image by being used with the first image data, third image data for acquisition of a base-frame-rate ultra-high-definition image by being used with the first image data, and fourth image data for acquisition of a high-frame-rate ultra-high-definition image by being used with the first to third image data that are obtained by processing high-frame-rate ultra-high-definition image data,
• the container includes a first video stream including encoded image data of the first image data and encoded image data of the second image data, and a second video stream including encoded image data of the third image data and encoded image data of the fourth image data,
• information is inserted into the container in a state in which the first and second video streams are each managed with two tracks, the information corresponding to information that is inserted into each of the predetermined number of video streams and associated with image data included in the video streams, and
• the circuitry is configured to obtain the image data by selectively extracting predetermined encoded image data from the encoded image data of the first to fourth image data and performing decoding processing, based on the information inserted into the container, depending on decoding capability.

A reception method comprising

• receiving, by circuitry, a container including a predetermined number of video streams, wherein
• the predetermined number of video streams includes first image data for acquisition of a base-frame-rate high-definition image, second image data for acquisition of a high-frame-rate high-definition image by being used with the first image data, third image data for acquisition of a base-frame-rate ultra-high-definition image by being used with the first image data, and fourth image data for acquisition of a high-frame-rate ultra-high-definition image by being used with the first to third image data that are obtained by processing high-frame-rate ultra-high-definition image data,
• the container includes a first video stream including encoded image data of the first image data and encoded image data of the second image data, and a second video stream including encoded image data of the third image data and encoded image data of the fourth image data,
• information is inserted into the container in a state in which the first and second video streams are each managed with two tracks, the information corresponding to information that is inserted into each of the predetermined number of video streams and associated with image data included in the video streams, and
• the reception method further comprises obtaining, by the circuitry, the image data by selectively extracting predetermined encoded image data from the encoded image data of the first to fourth image data and performing decoding processing, based on the information inserted into the container, depending on decoding capability.