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    Picture timing information signaling in coded video
    81.
    发明授权
    Picture timing information signaling in coded video 有权

    公开(公告)号：US12192529B2

    公开(公告)日：2025-01-07

    申请号：US18078662

    申请日：2022-12-09

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/70 ,  H04N19/136 ,  H04N19/169 ,  H04N19/184 ,  H04N19/30 ,  H04N19/433 ,  H04N19/46

    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 comprising one or more output layer sets according to a rule, wherein the rule specifies that a supplemental enhancement information (SEI) network abstraction layer (NAL) unit that includes a scalable-nested SEI message carrying picture timing information is not included due to use of a same picture timing in all output layer sets in the bitstream.

    Handling different NAL types in video sub-bitstream extraction
    82.
    发明授权
    Handling different NAL types in video sub-bitstream extraction 有权

    公开(公告)号：US12108068B2

    公开(公告)日：2024-10-01

    申请号：US18077803

    申请日：2022-12-08

    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, wherein the bitstream includes network abstraction layer (NAL) units for multiple video layers according to a rule; wherein the rule defines a sub-bitstream extraction process by which NAL units are removed from the bitstream to generate an output bitstream, and wherein the rule 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.

    Constraints On Reference Picture Lists
    85.
    发明公开
    Constraints On Reference Picture Lists 审中-公开

    公开(公告)号：US20240137493A1

    公开(公告)日：2024-04-25

    申请号：US18528032

    申请日：2023-12-04

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/105 ,  H04N19/159 ,  H04N19/169 ,  H04N19/174

    CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/188

    Abstract: Methods and apparatus for processing of video are described. The processing may include video encoding, decoding, or transcoding. One example 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 subpicture cannot be a random access type of subpicture in response to the subpicture not being a leading subpicture of an intra random access point subpicture. The leading subpicture precedes the intra random access point subpicture in output order.

    Subpicture Signaling In Video Coding
    87.
    发明公开
    Subpicture Signaling In Video Coding 审中-公开

    公开(公告)号：US20240107072A1

    公开(公告)日：2024-03-28

    申请号：US18523118

    申请日：2023-11-29

    Applicant: Bytedance Inc.

    Inventor： Ye-kui Wang

    IPC: H04N19/70 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/46

    CPC classification number: H04N19/70 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/188 ,  H04N19/46

    Abstract: Methods, devices and systems for signaling the use of subpictures in coded video pictures are described. One example method of video processing includes performing a conversion between a video and a bitstream of a video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that a first syntax element, which indicates whether a picture of the video can be partitioned, is conditionally included in a picture parameter set (PPS) of the bitstream based on values of a second syntax element, which indicates whether identifiers of subpictures are signaled in the PPS, and a third syntax element, which indicates, in the PPS, a number of the subpictures.

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