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    Signaling of gradual decoding refresh and reference picture lists
    41.
    发明授权
    Signaling of gradual decoding refresh and reference picture lists 有权

    公开(公告)号：US12149706B2

    公开(公告)日：2024-11-19

    申请号：US17989339

    申请日：2022-11-17

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang ,  Li Zhang

    IPC: H04N19/157 ,  H04N19/103 ,  H04N19/105 ,  H04N19/136 ,  H04N19/172 ,  H04N19/174 ,  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 current picture of a video and a bitstream of the video according to a rule. The rule specifies that responsive to a picture being referred to by an inter-layer reference picture (ILRP) entry in a reference picture list of a slice of the current picture, the picture is allowed to have a gradual decoding refresh (GDR) type and a syntax element specifying a recovery point of the picture in an output order is 0.

    SLICE TYPE IN VIDEO CODING
    43.
    发明公开
    SLICE TYPE IN VIDEO CODING 审中-公开

    公开(公告)号：US20240187627A1

    公开(公告)日：2024-06-06

    申请号：US18400588

    申请日：2023-12-29

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang ,  Li Zhang

    IPC: H04N19/46 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/70

    CPC classification number: H04N19/46 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/70

    Abstract: Methods and apparatus for video processing are described. The video processing may include video encoding, video decoding or video transcoding. One example video processing method includes performing a conversion between a video including one or more pictures including one or more slices and a coded representation of the video, wherein the coded representation conforms to a format rule that specifies that a condition of a field in the coded representation controls a constraint on a slice type or whether the slice type is included in the coded representation for a video slice, wherein the field includes a general constraint flag, a network abstraction layer unit type or whether the video slice is in a first video picture of an access unit.

    Ordering of NAL units in coded video
    44.
    发明授权
    Ordering of NAL units in coded video 有权

    公开(公告)号：US11973967B2

    公开(公告)日：2024-04-30

    申请号：US17989399

    申请日：2022-11-17

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/46 ,  H04N7/01 ,  H04N19/169 ,  H04N19/172 ,  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 includes one or more layers including one or more network abstraction layer (NAL) units according to a format rule that specifies that a first layer identifier in a header of an end of sequence network abstraction layer (EOS NAL) unit is required to be equal to a second layer identifier of one of the one or more layers in the bitstream.

    SUB-BITSTREAM EXTRACTION OF MULTI-LAYER VIDEO BITSTREAMS
    49.
    发明公开
    SUB-BITSTREAM EXTRACTION OF MULTI-LAYER VIDEO BITSTREAMS 审中-公开

    公开(公告)号：US20240107048A1

    公开(公告)日：2024-03-28

    申请号：US18525250

    申请日：2023-11-30

    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 according to a rule, wherein the bitstream includes network abstraction layer (NAL) units for multiple video layers according to a rule; wherein the rule defines that a sub-bitstream extraction process to generate an output bitstream comprising an output layer set (OLS) includes one or more operations that are selectively performed responsive to the following conditions: (1) a list of NAL unit header layer identifier values in the OLS does not includes all values of NAL unit header layer identifiers in all video coding layer (VCL) NAL units in the bitstream, and (2) the output bitstream containing a supplemental enhancement information (SEI) NAL unit that contains a scalable-nesting SEI message.

    SUBLAYER SIGNALING IN A VIDEO BITSTREAM
    50.
    发明公开
    SUBLAYER SIGNALING IN A VIDEO BITSTREAM 审中-公开

    公开(公告)号：US20240107046A1

    公开(公告)日：2024-03-28

    申请号：US18518768

    申请日：2023-11-24

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/46 ,  H04N19/146 ,  H04N19/172 ,  H04N19/30 ,  H04N19/70

    CPC classification number: H04N19/46 ,  H04N19/146 ,  H04N19/172 ,  H04N19/30 ,  H04N19/70

    Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video and a bitstream of the video including one or more output layer sets (OLSs) according to a rule. The rule specifies that a subpicture level information (SLI) supplemental enhancement information (SEI) message includes information about a level of subpicture sequences in a set of coded video sequences of the one or more OLSs to which the SLI SEI message applies. A syntax structure of the SLI SEI message includes at least (1) a first syntax element specifying a maximum number of sublayers for the subpicture sequences and (2) a second syntax element specifying whether level information for the subpicture sequences is present for one or more sublayer representations.

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