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    CODING OF PICTURE ORDER COUNT IN VIDEO BITSTREAMS
    131.
    发明申请
    CODING OF PICTURE ORDER COUNT IN VIDEO BITSTREAMS 有权

    公开(公告)号：US20230077443A1

    公开(公告)日：2023-03-16

    申请号：US17990932

    申请日：2022-11-21

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/46 ,  H04N19/70 ,  H04N19/105 ,  H04N19/172

    Abstract: Methods, systems and devices for coding the picture order count in video bitstream processing. 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 derivation of a picture associated with a first flag and in a decoding process for a picture order count is based on a second flag, wherein the picture associated with the first flag is a previous picture in a decoding order that has (i) a first identifier that is the same as a slice or picture header referring to a reference picture list syntax structure, (ii) a second identifier and the second flag being equal to zero, and (iii) a picture type different from a random access skipped leading picture and a random access decodable leading picture.

    PRESENCE OF ADAPTATION PARAMETER SET UNITS
    132.
    发明申请
    PRESENCE OF ADAPTATION PARAMETER SET UNITS 有权

    公开(公告)号：US20230066409A1

    公开(公告)日：2023-03-02

    申请号：US17967382

    申请日：2022-10-17

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

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

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

    Abstract: Systems, methods and apparatus for video processing are described. The video processing may include video encoding, video decoding, or video transcoding. One example method of video processing includes performing a conversion between a video comprising one or more pictures comprising one or more slices and a bitstream of the video. The bitstream conforms to a predefined order between a position of a first NAL (network abstraction layer) unit in a picture unit carrying an adaptation parameter set information and a second NAL unit that is a last video coding layer (VCL) NAL unit in the picture unit.

    ORDER RELATIONSHIP BETWEEN SUBPICTURES
    133.
    发明申请
    ORDER RELATIONSHIP BETWEEN SUBPICTURES 有权

    公开(公告)号：US20230034923A1

    公开(公告)日：2023-02-02

    申请号：US17949034

    申请日：2022-09-20

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/88 ,  H04N19/169 ,  H04N19/176 ,  H04N19/70

    Abstract: Methods and apparatus for processing of video are described. The processing includes video encoding, decoding, or transcoding. A video processing method includes performing a conversion between a video including one or more pictures including one or more subpictures and a bitstream of the video. The bitstream conforms to a format rule that specifies that a trailing subpicture that is associated with an intra random access point subpicture or a gradual decoding refresh subpicture follows the intra random access point subpicture or the gradual decoding refresh subpicture in an order.

    Using Video Parameter Set In Video Coding
    135.
    发明申请
    Using Video Parameter Set In Video Coding 有权

    公开(公告)号：US20230028609A1

    公开(公告)日：2023-01-26

    申请号：US17946624

    申请日：2022-09-16

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/423 ,  H04N19/70 ,  H04N19/186 ,  H04N19/172

    Abstract: Methods and apparatus for video processing, including coding and decoding, are described. One example video processing method includes performing a conversion between a video and a bitstream of the video according to a format rule, wherein the bitstream includes one or more output layer sets (OLSs), each OLS comprising one or more coded layer video sequences, and wherein the format rule specifies that a video parameter set indicates, for each of the one or more OLSs, a greatest allowed value of a chroma format indicator and/or a greatest allowed value of a bit depth used to represent pixels of the video.

    LOW FREQUENCY NON-SEPARABLE TRANSFORM SIGNALING IN VIDEO CODING
    137.
    发明申请
    LOW FREQUENCY NON-SEPARABLE TRANSFORM SIGNALING IN VIDEO CODING 有权

    公开(公告)号：US20230007253A1

    公开(公告)日：2023-01-05

    申请号：US17901270

    申请日：2022-09-01

    Applicant: Bytedance Inc.

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

    IPC: H04N19/12 ,  H04N19/176 ,  H04N19/70 ,  H04N19/60 ,  H04N19/18

    Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video block of a video and a bitstream of the video. The video block uses a low frequency non-separable transform for the conversion. The bitstream conforms to a format rule specifying that a syntax element is included at a syntax level for the bitstream. The syntax element is indicative of whether use of a scaling matrix which is derived from a reference scaling list is enabled for the video block. The syntax level is a sequence level, a picture level, or a slice level.

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