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    Filter parameter signaling in video picture headers
    184.
    发明授权
    Filter parameter signaling in video picture headers 有权

    公开(公告)号：US11729430B2

    公开(公告)日：2023-08-15

    申请号：US17977492

    申请日：2022-10-31

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang ,  Jizheng Xu

    IPC: H04N19/00 ,  H04N19/86 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

    CPC classification number: H04N19/86 ,  H04N19/176 ,  H04N19/186 ,  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 picture of a video and a bitstream of the video. A first syntax element in a first video unit level specifying a deblocking parameter offset for β divided by 2 applied to a chroma component for one or more slices in a first video unit and a second syntax element in the first video unit level specifying a deblocking parameter offset for tC divided by 2 applied to the chroma component for the one or more slices in the first video unit are determined according to a rule in response to the first syntax element and the second syntax element not included in the bitstream.

    CONSTRAINTS ON NUMBER OF SUBPICTURE IN A VIDEO PICTURE
    186.
    发明申请
    CONSTRAINTS ON NUMBER OF SUBPICTURE IN A VIDEO PICTURE 有权

    公开(公告)号：US20230099628A1

    公开(公告)日：2023-03-30

    申请号：US18076085

    申请日：2022-12-06

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

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

    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 according to a rule. The rule specifies that a subpicture sequence includes (1) all subpictures within the target CVSs that have a same subpicture index and belong to layers in the multi-subpicture layers, and (2) all subpictures in the target CVSs that have a subpicture index of 0 and belong to layers of the OLSs but not in the multi-subpicture layers.

    REFERENCE PICTURE RESAMPLING
    187.
    发明申请
    REFERENCE PICTURE RESAMPLING 有权

    公开(公告)号：US20230097856A1

    公开(公告)日：2023-03-30

    申请号：US18074887

    申请日：2022-12-05

    Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

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

    IPC: H04N19/70 ,  H04N19/174 ,  H04N19/105

    Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are descrined. 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 a number of entries in a reference picture list of the current picture is greater than 0 in response to (1) one or more slices in the current picture being allowed to have a slice type other than an Intra (I) slice type, and (2) reference picture list (RPL) information being present in a picture header.

    SIGNALING CONSTRAINTS IN NON-SCALABLE NESTED VIDEO SYNTAX ELEMENTS
    188.
    发明申请
    SIGNALING CONSTRAINTS IN NON-SCALABLE NESTED VIDEO SYNTAX ELEMENTS 有权

    公开(公告)号：US20230095551A1

    公开(公告)日：2023-03-30

    申请号：US18077866

    申请日：2022-12-08

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/46 ,  H04N19/184 ,  H04N19/169 ,  H04N19/136 ,  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, wherein the bitstream comprises one or more supplemental enhancement information, SEI, network abstraction layer (NAL) units according to a rule, wherein the rule specifies that, responsive to an SEI NAL unit including a non-scalable-nested SEI message of a first payload type, the SEI NAL unit is disallowed to include another SEI message of a second payload type.

    SIGNALING OF CODED PICTURE BUFFER INFORMATION IN VIDEO BITSTREAMS
    189.
    发明申请
    SIGNALING OF CODED PICTURE BUFFER INFORMATION IN VIDEO BITSTREAMS 有权

    公开(公告)号：US20230085717A1

    公开(公告)日：2023-03-23

    申请号：US17990959

    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 of coded buffer picture information 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 first syntax element, when included in the bitstream, is access unit (AU) specific, wherein the value of the first syntax element is based on whether an associated AU is an intra random access points (IRAP) AU or a gradual decoding refresh (GDR) AU, and wherein the value of the first syntax element specifies (i) whether a second syntax element is present in a buffering period supplemental enhancement information (SEI) message, and (ii) whether alternative timing information is present in a picture timing SEI message in a current buffering period.

    INDICATION OF END OF SEQUENCE IN CODED VIDEO
    190.
    发明申请
    INDICATION OF END OF SEQUENCE IN CODED VIDEO 有权

    公开(公告)号：US20230075261A1

    公开(公告)日：2023-03-09

    申请号：US17988934

    申请日：2022-11-17

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

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

    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.

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