摘要:
A data generation method is for generating video data that covers a second luminance dynamic range wider than a first luminance dynamic range and has reproduction compatibility with a first device that does not support reproduction of video having the second luminance dynamic range and supports reproduction of video having the first luminance dynamic range, and includes: generating a video signal to be included in the video data using a second OETF (S101); storing, into VUI in the video data, first transfer function information for identifying a first OETF. to be referred to by the first device when the first device decodes the video data; and storing, into SEI in the video data, second transfer function information for identifying a second OETF to be referred to by a second device supporting reproduction of video having the second luminance dynamic range when the second device decodes the video data (S102).
摘要:
A transmitting method according to one aspect of the present disclosure is a transmitting method of a playback device that transmits video signals to a display device, and includes: when a version of a transmission protocol is a first version, transmitting first meta data to the display device without transmitting second meta data to the display device, while the transmission protocol connects the playback device and the display device, the first meta data is information that is commonly used for a plurality of images included in a continuous playback unit of the video signal and relates to a luminance range of the video signal, and the second meta data is information that is commonly used for a unit subdivided compared to the continuous playback unit of the video signal and relates to the luminance range of the video signal; and when the version of the transmission protocol is a second version, transmitting the first meta data and the second meta data to the display device.
摘要:
A pair of main-view and sub-view video streams, a graphics stream, and playlist information are recorded on a BD-ROM disc. The sub-view video stream includes metadata arranged in each GOP. The metadata includes a correspondence table associating offset identifiers and offset information. The offset information defines offset control for each picture in a GOP. Offset control is processing to provide a left offset and right offset for the horizontal coordinates in a graphics plane to generate a pair of graphics planes that are respectively combined with main-view and sub-view video planes. The playlist information includes a stream selection table for each playback section. When the stream selection table associates a stream number with a packet identifier of a graphics stream, one of the offset identifiers is further allocated to the stream number.
摘要:
An encoding device comprises: an encoding circuit configured to encode video data according to a coding standard including a High Efficiency Video Coding (HEVC) standard and a second opto-electrical transfer function (OETF), an intensity of light within a second range being input into the second OETF, and a storage to store: video usability information (VLTI) including a first value indicating a first OETF and supplemental enhancement information (SEI) including a second value indicating the second OETF, wherein VUI and SEI are included in the video data, wherein the first OETF supports a first range of an input intensity of light and the second range is wider than the first range, the first value is to be referred to by a decoding device that does not support the second OETF, when the decoding device decodes the video data and the second OETF has compatibility with the first OETF, wherein the first OETF is an OETF defined in one of BT. 709 and BT. 2020 and the SEI is in an IRAP NAL unit or an I-picture.
摘要:
A data generation device comprises: a generating circuit configured to generate video data according to an Advanced Video Coding (AVC) standard and a second opto-electrical transfer function (OETF); and a storage to store: video usability information (VUI) including a first value indicating a first OETF; and supplemental enhancement information (SEI) including a second value indicating the second OETF, wherein the first OETF and the second OETF support a standard dynamic range (SDR) and a high dynamic range (HDR), respectively, the first value is to be referred to by a decoding device that does not support HDR, the second OETF is a combination of a square root function and a logarithmic function, the SEI is provided in a multiplexing layer other than a video coding layer, and the second OETF has compatibility with the first OETF.
摘要:
A data output apparatus according to one aspect of the present disclosure includes: a video decoder that decodes a video stream to generate a first video signal with a first luminance range; an external metadata acquisition unit that acquires first metadata regarding a luminance range of the first video signal; an HDR metadata interpreter that interprets the first metadata to acquire characteristic data indicating the luminance range of the first video signal; an HDR control information generator that converts the characteristic data into HDR control information according to a predetermined transmission protocol; and an HDMI output unit that outputs the HDR control information in accordance with the predetermined transmission protocol.
摘要:
A video transmission method according to the present disclosure includes: generating a transmission signal including, in a time series, first video data having a first luminance dynamic range and second video data having a second luminance dynamic range wider than the first luminance dynamic range; and transmitting the transmission signal generated. In the generating of the transmission signal, a signal level corresponding to a luminance value is limited to a value lower than a limit value that is predetermined, in a transition period provided for switching from one of the first video data and the second video data to the other.