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    SIGNALING OF PICTURE INFORMATION IN ACCESS UNITS
    71.
    发明申请
    SIGNALING OF PICTURE INFORMATION IN ACCESS UNITS 有权

    公开(公告)号：US20230091220A1

    公开(公告)日：2023-03-23

    申请号：US17990945

    申请日：2022-11-21

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/423 ,  H04N19/70 ,  H04N19/46 ,  H04N19/172

    Abstract: Methods, systems and devices for signaling picture information in access units in video bitstream processing are disclosed. An example method of video processing includes performing a conversion between a video comprising one or more pictures and a bitstream of the video, wherein the bitstream conforms to a format rule, wherein the format rule specifies that a flag and a syntax element, when included in the bitstream, are access unit (AU) specific, and wherein the flag indicates, in response to a current AU not being a first AU in the bitstream in a decoding order, whether a nominal coded picture buffer (CPB) removal time of the current AU is determined relative to (a) a nominal CPB removal time of a previous AU associated with a buffering period supplemental enhancement information (SEI) message, or (b) a nominal CPB removal time of the current AU.

    Video Coding Using Parameter Sets
    74.
    发明申请
    Video Coding Using Parameter Sets 有权

    公开(公告)号：US20230044662A1

    公开(公告)日：2023-02-09

    申请号：US17957139

    申请日：2022-09-30

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang ,  Li Zhang ,  Kai Zhang

    IPC: H04N19/70 ,  H04N19/172 ,  H04N19/169 ,  H04N19/174

    Abstract: A video processing method includes performing a conversion between a video comprising one or more pictures and a bitstream of the video according to a format rule. The format rule specifies that, in response to satisfying one or more conditions, a syntax element indicating whether a first syntax structure providing a profile, a tier and a level information and a second syntax structure providing decoded picture buffer information are present in a sequence parameter set is set to be equal to 1 to indicate that the first syntax structure and the second syntax structure are present in the sequence parameter set.

    High Level Control Of Filtering In Video Coding
    76.
    发明申请
    High Level Control Of Filtering In Video Coding 有权

    公开(公告)号：US20230041260A1

    公开(公告)日：2023-02-09

    申请号：US17955856

    申请日：2022-09-29

    Applicant: Bytedance Inc.

    Inventor： Li Zhang ,  Ye-kui Wang

    IPC: H04N19/70 ,  H04N19/186 ,  H04N19/184

    Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video picture of a video comprising one or more slices and a bitstream of the video picture according to a rule. The rule specifies that that whether a first syntax element indicating a usage of a coding tool is present at a first level is based on a syntax flag indicating whether a syntax structure of a second level is not present at the first level, wherein the second level is higher than the first level, and wherein the second level is the video picture level or higher than the video picture level.

    LEVEL INFORMATION IN VIDEO CODING
    77.
    发明申请
    LEVEL INFORMATION IN VIDEO CODING 有权

    公开(公告)号：US20230038277A1

    公开(公告)日：2023-02-09

    申请号：US17953937

    申请日：2022-09-27

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang ,  Li Zhang

    IPC: H04N19/70 ,  H04N19/46 ,  H04N19/159 ,  H04N19/169 ,  H04N19/172

    Abstract: Methods and apparatus for video processing are described. The processing may include video encoding, video decoding, or video transcoding. An example video processing method includes performing a conversion between a video and a bitstream of the video including one or more output layer sets according to a format rule. At least one of the one or more output layer sets consists of a trick mode access representation including only intra random access points pictures or only intra-coded pictures. The format rule specifies whether or how level information for the trick mode representation is indicated in the bitstream.

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