Transmission device, transmission method, reception device and reception method
Convenience is achieved in performing processing depending on decoding capability in a reception side. High-frame-rate ultra-high-definition image data is processed to obtain 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. A container is transmitted including a predetermined number of video streams including encoded image data of the first to fourth image data. Information is inserted into the container, 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.
1. A reception device comprising:
reception circuitry configured to receive a description and a first video stream including encoded image data of first image data and encoded image data of second image data, and a second video stream including encoded image data of third image data and encoded image data of fourth image data, wherein:
the first image data is for acquisition of image data of a first frame rate and a first resolution, the second image data is for acquisition of image data of a second frame rate and the first resolution based on the first image data, the third image data is for acquisition of image data of the first frame rate and a second resolution based on the first image data, and the fourth image data is for acquisition of image data of the second frame rate and the second resolution based on the first, second, and third image data,
the description indicates a first representation corresponding to the first video stream and a second representation corresponding to the second video stream,
the first video stream includes a first temporal layer for the encoded image data of the first image data and a second temporal layer for the encoded image data of the second image data,
the second video stream includes a third temporal layer for the encoded image data of the third image data and a fourth temporal layer for the encoded image data of the fourth image data, and
the first frame rate is lower than the second frame rate, and the first resolution is lower than the second resolution; and
processing circuitry configured to obtain image data for display by decoding encoded image data included in the first and second video streams based on the description.
2. The reception device according to claim 1 , wherein the description is a Media Presentation Description (MPD).
3. The reception device according to claim 1 , wherein;
the first video stream includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the processing circuitry is configured to perform electro-optical conversion on the obtained image data based on the conversion characteristic information.
4. The reception device according to claim 3 , wherein
the first video stream further includes maximum luminance information indicating a maximum luminance level, and
the processing circuitry is configured to display the obtained image data based on the maximum luminance information.
5. The reception device according to claim 1 , wherein;
the description includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the processing circuitry is configured to perform electro-optical conversion on the obtained image data based on the conversion characteristic information.
6. The reception device according to claim 1 , wherein:
a picture of the first image data and a picture of the second image data are encoded alternately in the first video stream, and
a picture of the third image data and a picture of the fourth image data are encoded alternately in the second video stream.
7. A reception device comprising:
reception circuitry configured to receive a description and a first video stream including encoded image data of first image data and encoded image data of second image data, and a second video stream including encoded image data of third image data and encoded image data of fourth image data, wherein:
the first image data is for acquisition of image data of a first frame rate and a first resolution, the second image data is for acquisition of image data of a second frame rate and the first resolution based on the first image data, the third image data is for acquisition of image data of the first frame rate and a second resolution based on the first image data, and the fourth image data is for acquisition of image data of the second frame rate and the second resolution based on the first, second, and third image data,
the description indicates a first representation corresponding to the first video stream and a second representation corresponding to the second video stream,
the first and second video streams are each managed with one track or two tracks; and
processing circuitry configured to obtain image data for display by decoding encoded image data included in the first and second video streams based on the description.
8. The reception device according to claim 7 , wherein:
a picture of the first image data and a picture of the second image data are encoded alternately in the first video stream, and
a picture of the third image data and a picture of the fourth image data are encoded alternately in the second video stream.
9. The reception device according to claim 7 , wherein the description is a Media Presentation Description (MPD).
10. The reception device according to claim 7 , wherein:
the first video stream includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the processing circuitry is configured to perform electro-optical conversion on the obtained image data based on the conversion characteristic information.
11. The reception device according to claim 10 , wherein:
the first video stream further includes maximum luminance information indicating a maximum luminance level, and
the processing circuitry is configured to display the obtained image data based on the maximum luminance information.
12. The reception device according to claim 7 , wherein:
the description includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the processing circuitry is configured to perform electro-optical conversion on the obtained image data based on the conversion characteristic information.
13. A reception device comprising:
reception circuitry configured to receive a broadcast signal including a description and first and second video streams, the first video stream including encoded image data of first image data and encoded image data of second image data, and the second video stream including encoded image data of third image data and encoded image data of fourth image data, wherein:
the first image data is for acquisition of image data of a first frame rate and a first resolution, the second image data is for acquisition of image data of a second frame rate and the first resolution based on the first image data, the third image data is for acquisition of image data of the first frame rate and a second resolution based on the first image data, and the fourth image data is for acquisition of image data of the second frame rate and the second resolution based on the first, second, and third image data,
the description indicates a first representation corresponding to the first video stream and a second representation corresponding to the second video stream; and processing circuitry configured to obtain image data for display by decoding encoded image data included in the first and second video streams based on the description.
14. The reception device according to claim 13 , wherein:
a picture of the first image data and a picture of the second image data are encoded alternately in the first video stream, and
a picture of the third image data and a picture of the fourth image data are encoded alternately in the second video stream.
15. The reception device according to claim 13 , wherein the description is a Media Presentation Description (MPD).
16. The reception device according to claim 13 , wherein:
the first video stream includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the processing circuitry is configured to perform electro-optical conversion on the obtained image data based on the conversion characteristic information.
17. The reception device according to claim 16 , wherein:
the first video stream further includes maximum luminance information indicating a maximum luminance level, and
the processing circuitry is configured to display the obtained image data based on the maximum luminance information.
18. The reception device according to claim 13 , wherein:
the description includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the processing circuitry is configured to perform electro-optical conversion on the obtained image data based on the conversion characteristic information.
19. A reception method comprising:
receiving, by reception circuitry, a description and a first video stream including encoded image data of first image data and encoded image data of second image data, and a second video stream including encoded image data of third image data and encoded image data of fourth image data, wherein:
the first image data is for acquisition of image data of a first frame rate and a first resolution, the second image data is for acquisition of image data of a second frame rate and the first resolution based on the first image data, the third image data is for acquisition of image data of the first frame rate and a second resolution based on the first image data, and the fourth image data is for acquisition of image data of the second frame rate and the second resolution based on the first, second, and third image data,
the description indicates a first representation corresponding to the first video stream and a second representation corresponding to the second video stream,
the first video stream includes a first temporal layer for the encoded image data of the first image data and a second temporal layer for the encoded image data of the second image data,
the second video stream includes a third temporal layer for the encoded image data of the third image data and a fourth temporal layer for the encoded image data of the fourth image data, and
the first frame rate is lower than the second frame rate, and the first resolution is lower than the second resolution; and
obtaining, by processing circuitry, image data for display by decoding encoded image data included in the first and second video streams based on the description.
20. The reception method according to claim 19 , wherein the description is a Media Presentation Description (MPD).
21. The reception method according to claim 19 , wherein:
the first video stream includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the reception method further comprises performing electro-optical conversion on the obtained image data based on the conversion characteristic information.
22. The reception method according to claim 21 , wherein
the first video stream further includes maximum luminance information indicating a maximum luminance level,
the reception method further comprises displaying the obtained image data based on the maximum luminance information.
23. The reception method according to claim 19 , wherein:
the description includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the method comprises performing electro-optical conversion on the obtained image data based on the conversion characteristic information.
24. The reception method according to claim 19 , wherein:
a picture of the first image data and a picture of the second image data are encoded alternately in the first video stream, and
a picture of the third image data and a picture of the fourth image data are encoded alternately in the second video stream.
25. A reception method comprising:
receiving, by reception circuitry, a description and a first video stream including encoded image data of first image data and encoded image data of second image data, and a second video stream including encoded image data of third image data and encoded image data of fourth image data, wherein:
the first image data is for acquisition of image data of a first frame rate and a first resolution, the second image data is for acquisition of image data of a second frame rate and the first resolution based on the first image data, the third image data is for acquisition of image data of the first frame rate and a second resolution based on the first image data, and the fourth image data is for acquisition of image data of the second frame rate and the second resolution based on the first, second, and third image data,
the description indicates a first representation corresponding to the first video stream and a second representation corresponding to the second video stream,
the first and second video streams are each managed with one track or two tracks; and
obtaining, by processing circuitry, image data for display by decoding encoded image data included in the first and second video streams based on the description.
26. The reception method according to claim 25 , wherein:
a picture of the first image data and a picture of the second image data are encoded alternately in the first video stream, and
a picture of the third image data and a picture of the fourth image data are encoded alternately in the second video stream.
27. The reception method according to claim 25 , wherein the description is a Media Presentation Description (MPD).
28. The reception method according to claim 25 , wherein:
the first video stream includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the method comprises performing electro-optical conversion on the obtained image data based on the conversion characteristic information.
29. The reception method according to claim 28 , wherein:
the first video stream further includes maximum luminance information indicating a maximum luminance level, and
the method comprises displaying the obtained image data based on the maximum luminance information.
30. The reception method according to claim 25 , wherein:
the description includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the method comprises performing electro-optical conversion on the obtained image data based on the conversion characteristic information.
31. A reception method comprising:
receiving a broadcast signal including a description and first and second video streams, the first video stream including encoded image data of first image data and encoded image data of second image data, and the second video stream including encoded image data of third image data and encoded image data of fourth image data, wherein:
the first image data is for acquisition of image data of a first frame rate and a first resolution, the second image data is for acquisition of image data of a second frame rate and the first resolution based on the first image data, the third image data is for acquisition of image data of the first frame rate and a second resolution based on the first image data, and the fourth image data is for acquisition of image data of the second frame rate and the second resolution based on the first, second, and third image data,
the description indicates a first representation corresponding to the first video stream and a second representation corresponding to the second video stream; and
obtaining, by processing circuitry, image data for display by decoding encoded image data included in the first and second video streams based on the description.
32. The reception method according to claim 31 , wherein:
a picture of the first image data and a picture of the second image data are encoded alternately in the first video stream, and
a picture of the third image data and a picture of the fourth image data are encoded alternately in the second video stream.
33. The reception method according to claim 31 , wherein the description is a Media Presentation Description (MPD).
34. The reception method according to claim 31 , wherein:
the first video stream includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the method comprises performing electro-optical conversion on the obtained image data based on the conversion characteristic information.
35. The reception method according to claim 34 , wherein:
the first video stream further includes maximum luminance information indicating a maximum luminance level, and
the method comprises displaying the obtained image data based on the maximum luminance information.
36. The reception method according to claim 31 , wherein:
the description includes conversion characteristic information indicating a characteristic of a high-dynamic-range conversion, and
the method comprises performing electro-optical conversion on the obtained image data based on the conversion characteristic information.