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    Scalable nested SEI message handling in video sub-bitstream extraction process
    232.
    发明授权
    Scalable nested SEI message handling in video sub-bitstream extraction process 有权

    公开(公告)号：US11962790B2

    公开(公告)日：2024-04-16

    申请号：US17992181

    申请日：2022-11-22

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/547 ,  H04N19/169 ,  H04N19/172 ,  H04N19/31 ,  H04N19/70

    CPC classification number: H04N19/188 ,  H04N19/172 ,  H04N19/31 ,  H04N19/70

    Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of video processing includes performing a conversion between a video including one or more layers and a bitstream of the video according to a rule, wherein the rule specifies, in a process of sub-bitstream extraction to output an output sub-bitstream, whether to generate non-scalable nested supplementary enhancement information (SEI) messages by extracting scalable-nested SEI messages from a scalable nesting SEI message based on a first flag indicating whether the SEI message applies to specific output layer sets (OLSs) and a second flag indicating whether the SEI message applies to all subpictures or only to specific subpictures.

    HANDLING DIFFERENT NAL TYPES IN VIDEO SUB-BITSTREAM EXTRACTION
    233.
    发明公开
    HANDLING DIFFERENT NAL TYPES IN VIDEO SUB-BITSTREAM EXTRACTION 审中-公开

    公开(公告)号：US20240121417A1

    公开(公告)日：2024-04-11

    申请号：US18527601

    申请日：2023-12-04

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/46 ,  H04N19/105 ,  H04N19/169

    CPC classification number: H04N19/46 ,  H04N19/105 ,  H04N19/188

    Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of video processing includes performing a conversion between a video and a bitstream of the video. The bitstream includes network abstraction layer (NAL) units for multiple video layers according to a rule. The rule defines a sub-bitstream extraction process by which NAL units are removed from the bitstream to generate an output bitstream, and specifies to remove all supplemental enhancement information (SEI) NAL units that contain a non-scalable-nested SEI message with a particular payload type, responsive to a list of NAL unit header layer identifier values in an output layer set (OLS) with a target OLS index not including all values of NAL unit header layer identifiers in all video coding layer (VCL) NAL units in the bitstream that is input to the sub-bitstream extraction process.

    Indication of end of sequence in coded video
    234.
    发明授权
    Indication of end of sequence in coded video 有权

    公开(公告)号：US11949899B2

    公开(公告)日：2024-04-02

    申请号：US17988934

    申请日：2022-11-17

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/172 ,  H04N7/01 ,  H04N19/169 ,  H04N19/46 ,  H04N19/70

    CPC classification number: H04N19/46 ,  H04N7/01 ,  H04N19/172 ,  H04N19/188 ,  H04N19/70

    Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of video processing includes performing a conversion between a video and a bitstream of the video. The bitstream conforms to a format rule. The bitstream includes one or more layers including one or more picture units (PUs). The format rule specifies that, responsive to a first PU in a layer of the bitstream following an end of sequence network abstraction layer (EOS NAL) unit in the layer in a decoding order, a variable of the first PU is set to a particular value, wherein the variable indicates whether the first PU is a coded layer video sequence start (CLVSS) PU.

    Signaling Of General Constrain Information
    236.
    发明公开
    Signaling Of General Constrain Information 审中-公开

    公开(公告)号：US20240107068A1

    公开(公告)日：2024-03-28

    申请号：US18511565

    申请日：2023-11-16

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang ,  Li Zhang

    IPC: H04N19/70 ,  H04N19/85

    CPC classification number: H04N19/70 ,  H04N19/85

    Abstract: Methods, systems, and devices for signaling of general constraint information are described. An example method of video processing includes performing a conversion between a video including one or more pictures and a bitstream of the video according to a rule. The rule specifies that a syntax structure in a profile-tier-level syntax structure is after a syntax element. The syntax structure includes information related to general constraint information (GCI) for the bitstream. The syntax element indicates a level to which an output layer set associated with the profile-tier-level syntax structure conforms.

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