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

Abstract

The present technology ensures that electrooptical conversion processing for transmission video data obtained using an HDR optoelectrical conversion characteristic is favorably carried out at a receiving side. The transmission video data is obtained by performing high dynamic range optoelectrical conversion on high dynamic range video data. A video stream is obtained by applying encoding processing to this transmission video data. A container in a predetermined format including this video stream is transmitted. Meta information indicating an electrooptical conversion characteristic corresponding to a high dynamic range optoelectrical conversion characteristic is inserted into a parameter set field in the video stream.

1 . A transmission device comprising:
 processing circuitry configured to
 control a high dynamic range optoelectrical conversion on high dynamic range video data to obtain transmission video data, and 
 control a video encoding of the transmission video data to obtain a video stream; and 
   a transmitter configured to transmit the video stream,   wherein the processing circuitry is further configured to
 control an insertion of first meta information into a parameter set field in the video stream, the first meta information indicating a type for an electrooptical conversion corresponding to the high dynamic range optoelectrical conversion, and 
 control an insertion of second meta information including peak brightness information into a field different from the parameter set field in the video stream. 
   
     
     
         2 . The transmission device according to  claim 1 , wherein
 the parameter set field is a field in a sequence parameter set (SPS) network abstraction layer (NAL) unit.   
     
     
         3 . The transmission device according to  claim 1 , wherein
 the processing circuitry is further configured to
 control generation of a container including the video stream, and 
 control an insertion of identification information indicating that the video stream is of a type supporting a high dynamic range into the container, and 
   the transmitter is configured to transmit the container.   
     
     
         4 . The transmission device according to  claim 3 , wherein
 the container is in a format selected from at least MPEG-2 Transport Stream, ISOBMFF, or MPEG Media Transport (MMT) stream.   
     
     
         5 . The transmission device according to  claim 1 , wherein
 the field different from the parameter set field is a field in a supplemental enhancement information (SEI) network abstraction layer (NAL) unit.   
     
     
         6 . A reception device comprising:
 a receiver configured to receive a video stream obtained by encoding transmission video data,
 the transmission video data being obtained by applying a high dynamic range optoelectrical conversion to high dynamic range data, 
 first meta information indicating a type for an electrooptical conversion corresponding to the high dynamic range optoelectrical conversion being inserted into a parameter set field in the video stream, and 
 second meta information including peak brightness information being inserted into a field different from the parameter set field in the video stream; and 
   processing circuitry configured to
 control a video decoding of the video stream to obtain the transmission video data, 
 control an electrooptical conversion on the transmission video data to obtain display video data on a basis of the type for the electrooptical conversion indicated by the first meta information, and 
 control a display brightness adjustment of the display video data or the transmission video data on a basis of the peak brightness information included in the second meta information. 
   
     
     
         7 . The reception device according to  claim 6 , wherein
 the display brightness adjustment is performed in addition to the electrooptical conversion, or the display brightness adjustment and the electrooptical conversion are performed simultaneously.   
     
     
         8 . The reception device according to  claim 6 , wherein
 the parameter set field is a field in a sequence parameter set (SPS) network abstraction layer (NAL) unit.   
     
     
         9 . The reception device according to  claim 6 , wherein
 the field different from the parameter set field is a field in a supplemental enhancement information (SEI) network abstraction layer (NAL) unit.   
     
     
         10 . The reception device according to  claim 6 , wherein
 the receiver is configured to receive a container, identification information indicating the video stream is of a type supporting a high dynamic range being inserted into the container, and   the processing circuitry is configured to control extraction of the identification information from the container.   
     
     
         11 . The reception device according to  claim 10 , wherein
 the container is in a format selected from at least MPEG-2 Transport Stream, ISOBMFF or MPEG Media Transport (MMT) stream.   
     
     
         12 . A reception method comprising:
 receiving a video stream obtained by encoding transmission video data,
 the transmission video data being obtained by applying a high dynamic range optoelectrical conversion to high dynamic range data, 
 first meta information indicating a type for an electrooptical conversion corresponding to the high dynamic range optoelectrical conversion being inserted into a parameter set field in the video stream, and 
 second meta information including peak brightness information being inserted into a field different from the parameter set field in the video stream; 
   applying a decoding processing to the video stream to obtain the transmission video data;   performing an electrooptical conversion on the transmission video data to obtain display video data on a basis of the type for the electrooptical conversion indicated by the first meta information; and   performing a display brightness adjustment of the display video data or the transmission video data on a basis of the peak brightness information included in the second meta information.   
     
     
         13 . The reception method according to  claim 12 , wherein
 the display brightness adjustment is performed in addition to the electrooptical conversion, or the display brightness adjustment and the electrooptical conversion are performed simultaneously.   
     
     
         14 . The reception method according to  claim 12 , wherein
 the parameter set field is a field in a sequence parameter set (SPS) network abstraction layer (NAL) unit.   
     
     
         15 . The reception method according to  claim 12 , wherein
 the field different from the parameter set field is a field in a supplemental enhancement information (SEI) network abstraction layer (NAL) unit.   
     
     
         16 . The reception method according to  claim 12 , further comprising:
 receiving a container, identification information indicating the video stream is of a type supporting high dynamic range being inserted into the container, and   controlling extraction of the identification information from the container.   
     
     
         17 . The reception method according to  claim 16 , wherein
 the container is in a format selected from at least MPEG-2 Transport Stream, ISOBMFF or MPEG Media Transport (MMT) stream.