Reproduction method and reproduction apparatus

A display apparatus for displaying video based on a reproduction signal obtained from a video stream,

• the video stream having a first dynamic range where a maximum value of a luminance dynamic range is more than a predetermined luminance value,
• the display apparatus configured to display video in a second dynamic range narrower than the first dynamic range,
• the display apparatus comprising:
• a receiver that receives one of a first reproduction signal or a second reproduction signal;
• and
• a display that displays video based on the received one of the first reproduction signal or the second reproduction signal,
• wherein the first reproduction signal is obtained by one of:
• reproducing a first video stream quantized based on a hybrid optical-electro transfer function (OETF) without performing luminance conversion from the first dynamic range into the second dynamic range on a luminance of the first video stream;
• or
• performing the luminance conversion on the luminance of the first video stream and reproducing the first video stream subjected to the luminance conversion, and
• the second reproduction signal is obtained by performing the luminance conversion on a luminance of a second video stream not quantized based on the hybrid OETF and reproducing the second video stream subjected to the luminance conversion, and
• the second video stream is quantized using a Perceptual Quantizer (PQ) OETF.

A display method for a display apparatus that displays video based on a reproduction signal obtained from a video stream,

• the video stream having a first dynamic range where a maximum value of a luminance dynamic range is more than a predetermined luminance value,
• the display apparatus being configured to display video in a second dynamic range narrower than the first dynamic range,
• the display method comprising:
• receiving one of a first reproduction signal or a second reproduction signal;
• and
• displaying video based on the received one of the first reproduction signal or the second reproduction signal,
• wherein the first reproduction signal is obtained by one of:
• reproducing a first video stream quantized based on a hybrid optical-electro transfer function (OETF) without performing luminance conversion from the first dynamic range into the second dynamic range on a luminance of the first video stream;
• or
• performing the luminance conversion on the luminance of the first video stream and reproducing the first video stream subjected to the luminance conversion, and
• the second reproduction signal is obtained by performing the luminance conversion on a luminance of a second video stream not quantized based on the hybrid OETF and reproducing the second video stream subjected to the luminance conversion, and
• the video stream includes information indicating whether or not the video stream is quantized based on the hybrid OETF.

A display apparatus for displaying video based on a reproduction signal obtained from a video stream,

• the video stream having a first dynamic range where a maximum value of a luminance dynamic range is more than a predetermined luminance value,
• the display apparatus configured to display video in a second dynamic range narrower than the first dynamic range,
• the display apparatus comprising:
• a receiver that receives one of a first reproduction signal or a second reproduction signal;
• and
• a display that displays video based on the received one of the first reproduction signal or the second reproduction signal,
• wherein the first reproduction signal is obtained by one of:
• reproducing a first video stream quantized based on a hybrid optical-electro transfer function (OETF) without performing luminance conversion from the first dynamic range into the second dynamic range on a luminance of the first video stream;
• or
• performing the luminance conversion on the luminance of the first video stream and reproducing the first video stream subjected to the luminance conversion, and
• the second reproduction signal is obtained by performing the luminance conversion on a luminance of a second video stream not quantized based on the hybrid OETF and reproducing the second video stream subjected to the luminance conversion, and
• the video stream includes information indicating whether or not the video stream is quantized based on the hybrid OETF.