Transmitting device,transmitting method, receiving device, and receiving method

A transmitting device comprising:

• processing circuitry configured to
• perform dynamic range conversion for input video data having a first dynamic range characteristic, to obtain video data having a second dynamic range characteristic, wherein the dynamic range conversion is performed on the basis of conversion information for converting the first dynamic range characteristic into the second dynamic range characteristic,
• encode the video data to obtain a video stream,
• insert the conversion information into the video stream, and
• transmit the video stream.

A transmitting method comprising:

• performing, with circuitry, dynamic range conversion for input video data having a first dynamic range characteristic, to obtain video data having a second dynamic range characteristic, wherein the dynamic range conversion is performed on the basis of conversion information for converting the first dynamic range characteristic into the second dynamic range characteristic;
• encoding, with the circuitry, the video data to obtain a video stream;
• inserting, with the circuitry, the conversion information into the video stream;
• and
• transmitting the video stream.

A receiving device comprising:

• processing circuitry configured to
• receive a video stream,
• extract conversion information from the video stream,
• decode the video stream to obtain video data, and
• perform dynamic range conversion for the video data having a first dynamic range characteristic, to obtain video data having a second dynamic range characteristic, wherein the dynamic range conversion is performed on the basis of conversion information for converting the first dynamic range characteristic into the second dynamic range characteristic.

A receiving method comprising:

• receiving, with circuitry, a video stream,
• extracting, with the circuitry, conversion information from the video stream,
• decoding, with the circuitry, the video stream to obtain video data, and
• performing, with the circuitry, dynamic range conversion for the video data having a first dynamic range characteristic, to obtain video data having a second dynamic range characteristic, wherein the dynamic range conversion is performed on the basis of conversion information for converting the first dynamic range characteristic into the second dynamic range characteristic.