Transmission apparatus, transmission method, reception apparatus, and reception method

1. A transmission apparatus, comprising:

circuitry configured to

perform a high dynamic range opto-electronic conversion on high dynamic range (HDR) video data to obtain video data;

perform encoding processing on the video data to obtain a video stream;

transmit a container including the video stream; and

insert first metadata information indicating a standard dynamic range (SDR) opto-electronic transfer characteristic into the video stream, and insert second metadata information indicating a HDR opto-electronic transfer characteristic into the container or the video stream, the SDR opto-electronic transfer characteristic and the HDR opto-electronic transfer characteristic each relating a brightness level to a code value.

2. The transmission apparatus according to claim 1 , wherein the circuitry is further configured to insert third metadata information for display control into the video stream.

3. The transmission apparatus according to claim 2 , wherein the third metadata information for display control includes peak brightness information.

4. The transmission apparatus according to claim 2 , wherein the circuitry is further configured to insert the first metadata information into a region of a sequence parameter set network abstract layer (NAL) unit of the video stream, and insert the third metadata information for display control into a region of a supplemental enhancement information NAL unit of the video stream.

5. The transmission apparatus according to claim 1 , wherein the circuitry is further configured to insert the second metadata information into a region of a supplemental enhancement information network abstract layer unit of the video stream.

6. The transmission apparatus according to claim 1 , wherein the circuitry is further configured to insert the second metadata information into program information or event information of the container.

7. An information processing apparatus, comprising:

first circuitry configured to acquire a container including a video stream, the video stream corresponding to encoded video data, wherein first metadata information indicating a standard dynamic range (SDR) opto-electronic transfer characteristic is inserted into the video stream, and second metadata information indicating a high dynamic range (HDR) opto-electronic transfer characteristic is inserted into the container or the video stream, the SDR opto-electronic transfer characteristic and the HDR opto-electronic transfer characteristic each relating a brightness level to a code value; and

second circuitry configured to

perform decoding processing on the video stream to obtain the video data, and

perform an HDR electro-optical conversion, with a characteristic opposite to the HDR opto-electronic transfer characteristic, on the video data to obtain video data for display, based on the second metadata information indicating the HDR opto-electronic transfer characteristic.

8. The information processing apparatus according to claim 7 ,

wherein third metadata information for display control is inserted into the video stream, and

wherein the second circuitry is further configured to perform a display brightness adjustment on the video data for display based on the third metadata information for display control.

9. The information processing apparatus according to claim 8 , wherein the third metadata information for display control includes peak brightness information.

10. The information processing apparatus according to claim 8 , wherein the first metadata information is inserted into a region of a sequence parameter set network abstract layer (NAL) unit of the video stream, and the third metadata information for display control is inserted into a region of a supplemental enhancement information NAL unit of the video stream.

11. The information processing apparatus according to claim 7 , wherein the second metadata information is inserted into a region of a supplemental enhancement information network abstract layer unit of the video stream.

12. The information processing apparatus according to claim 7 , wherein the second metadata information is inserted into program information or service information of the container.

13. An information processing system, comprising:

a receiver device; and

a display device,

wherein the receiver device includes

receiver circuitry configured to receive a container including a video stream, the video stream corresponding to encoded video data, wherein first metadata information indicating a standard dynamic range (SDR) opto-electronic transfer characteristic is inserted into the video stream, and second metadata information indicating a high dynamic range (HDR) opto-electronic transfer characteristic is inserted into the container or the video stream, the SDR opto-electronic transfer characteristic and the HDR opto-electronic transfer characteristic each relating a brightness level to a code value; and

first processing circuitry configured to

perform decoding processing on the video stream to obtain the video data, and

transmit the obtained video data and the second metadata information indicating the HDR opto-electronic transfer characteristic to the display device, and

the display device includes

second processing circuitry configured to perform a HDR electro-optical conversion, with a characteristic opposite to the HDR opto-electronic transfer characteristic, on the video data to obtain video data for display, based on the second metadata information indicating the HDR opto-electronic transfer characteristic.

14. The information processing system according to claim 13 ,

wherein third metadata information for display control is inserted into the video stream, and

wherein the first processing circuitry is further configured to transmit the third metadata information for display control to the display device, and the second processing circuitry is further configured to perform a display brightness adjustment on the video data for display based on the third metadata information for display control.

15. The information processing system according to claim 14 , wherein the third metadata information for display control includes peak brightness information.

16. The information processing system according to claim 14 , wherein the first metadata information is inserted into a region of a sequence parameter set network abstract layer (NAL) unit of the video stream, and the third metadata information for display control is inserted into a region of a supplemental enhancement information NAL unit of the video stream.

17. The information processing system according to claim 13 , wherein the second metadata information is inserted into a region of a supplemental enhancement information network abstract layer unit of the video stream.

18. The information processing system according to claim 13 , wherein the second metadata information is inserted into program information or service information of the container.

19. The information processing system according to claim 13 , wherein the receiver device and the display device are connected via a High-Definition Multimedia Interface (HDMI) cable.

20. The information processing system according to claim 19 , wherein the first processing circuitry is further configured to transmit the second metadata information indicating the HDR opto-electronic transfer characteristic to the display device by using a packet of Vendor Specific InfoFrame.