公开(公告)号：US20230117813A1

公开(公告)日：2023-04-20

申请号：US18083956

申请日：2022-12-19

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

Inventor： Zhipin Deng ,  Li Zhang ,  Kai Zhang ,  Hongbin Liu ,  Jizheng Xu

IPC: H04N19/30 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/146 ,  H04N19/196 ,  H04N19/96

Abstract: A method for visual media processing, including performing a conversion between a current chroma video block of visual media data and a bitstream representation of the current chroma video block. During the conversion, a chroma residual of the current chroma video block is scaled based on a scaling coefficient. The scaling coefficient is derived at least based on luma samples located in predefined positions.

公开(公告)号：US11632548B2

公开(公告)日：2023-04-18

申请号：US17244533

申请日：2021-04-29

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

Inventor： Li Zhang ,  Kai Zhang ,  Hongbin Liu ,  Yue Wang ,  Na Zhang

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/139 ,  H04N19/159 ,  H04N19/52 ,  H04N19/46

Abstract: Devices, systems and methods for digital video coding, which include geometric partitioning, are described. An exemplary method for video processing includes making a decision, based on a priority rule, regarding an order of insertion of motion candidates into a motion candidate list for a conversion between a current block of video and a bitstream representation of the video, wherein the current block is coded using a geometry partition mode; and performing, based on the decision and the motion candidate list, the conversion.

公开(公告)号：US20230115541A1

公开(公告)日：2023-04-13

申请号：US17992270

申请日：2022-11-22

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

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

IPC: H04N19/70 ,  H04N19/46 ,  H04N19/169 ,  H04N19/186 ,  H04N19/174

Abstract: Methods, systems, apparatus for video processing are described. The processing may include encoding, decoding or transcoding. One example video processing method includes performing a conversion between a video and a bitstream of the video according to a rule, and wherein the rule specifies that a syntax element is included in a profile, tier, level information syntax structure to indicate whether one or more general constraint information syntax elements are included in a general constraint information syntax structure and/or whether the general constraint information syntax structure is included in the profile, tier, level information syntax structure.

公开(公告)号：US20230115118A1

公开(公告)日：2023-04-13

申请号：US17976189

申请日：2022-10-28

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

Inventor： Yang Wang ,  Li Zhang ,  Zhipin Deng ,  Kai Zhang ,  Hongbin Liu

IPC: H04N19/137 ,  H04N19/189 ,  H04N19/176 ,  H04N19/70

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 block of a video and a bitstream of the video according to a rule. The conversion is based on an adaptive motion vector difference resolution (AMVR) tool, and the rule specifies that selection of a context for a first bin within a bin string of a first syntax element that specifies the resolution of the motion vector difference associated with an AMVR shift is derived based on usage of a coding mode for the block.

公开(公告)号：US20230114860A1

公开(公告)日：2023-04-13

申请号：US17973810

申请日：2022-10-26

Applicant: Bytedance Inc.

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

IPC: H04N19/70 ,  H04N19/46 ,  H04N19/105 ,  H04N19/174

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 including one or more pictures and a bitstream of the video according to a format rule. The format rule specifies that a first syntax element that indicates whether motion vector difference for a particular reference picture list (RPL) is indicated is conditionally included in the bitstream based on (i) whether a second syntax element indicating whether an RPL information is included in a picture header and/or (ii) a number of reference pictures in the particular RPL in case that the RPL information is present in the picture header.

公开(公告)号：US20230113199A1

公开(公告)日：2023-04-13

申请号：US18079303

申请日：2022-12-12

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/30 ,  H04N19/169 ,  H04N19/136 ,  H04N19/172

Abstract: Methods, systems and devices for using end of sequence indications 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 multiple layers in multiple access units, AUs, including one or more pictures according to a format rule, wherein the format rule specifies that, responsive to an end of sequence (EOS) network abstraction layer (NAL) unit for a first layer being present in a first access unit (AU) in the bitstream, a subsequent picture of each of one or more higher layers of the first layer in an AU following the first AU in the bitstream is a coded layer video sequence start (CLVSS) picture.

公开(公告)号：US11627333B2

公开(公告)日：2023-04-11

申请号：US17330945

申请日：2021-05-26

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

Inventor： Li Zhang ,  Kai Zhang ,  Hongbin Liu ,  Jizheng Xu ,  Yue Wang

IPC: H04N19/30 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/52 ,  H04N19/105 ,  H04N19/117 ,  H04N19/184 ,  H04N19/70

Abstract: A method for video processing is provided to include: making a determination that a coding mode is enabled for a conversion between a current video block of a video and a coded representation of the video; and performing the conversion using a palette prediction mode wherein at least a palette of representative sample values is used for the current video block, and wherein, in the coding mode, the current video block is constructed based on samples in a first domain and a second domain and/or chroma residue is scaled in a luma-dependent manner.

公开(公告)号：US11627313B2

公开(公告)日：2023-04-11

申请号：US17521012

申请日：2021-11-08

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

Inventor： Kai Zhang ,  Li Zhang ,  Hongbin Liu ,  Yue Wang

IPC: H04N19/109 ,  H04N19/139 ,  H04N19/46 ,  H04N19/52 ,  H04N19/105 ,  H04N19/157 ,  H04N19/176 ,  H04N19/513

Abstract: A method of visual media processing includes determining whether to use an affine adaptive motion vector resolution (AMVR) technique on visual media data relying on a control information related to the affine AMVR technique in a bitstream representation of the visual media data, wherein the control information is included or excluded from the bitstream representation based on a rule; and performing a conversion between the visual media data and the bitstream representation of the visual media data.

公开(公告)号：US11627308B2

公开(公告)日：2023-04-11

申请号：US17126707

申请日：2020-12-18

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

Inventor： Li Zhang ,  Kai Zhang ,  Hongbin Liu ,  Yue Wang

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/30 ,  H04N19/517 ,  H04N19/137

Abstract: A video processing method includes deriving multiple temporal motion vector prediction (TMVP) candidates for a video block in a current picture based on multiple blocks associated with a second block in one or more pictures that are temporally co-located with the current picture, wherein the current picture is excluded from the one or more pictures, and the second block is temporally collocated with the video block, wherein the second block has a same size as the video block, and wherein a relative position of the second block to a top-left corner of a second picture of the one or more pictures is same as that of the video block to a top-left corner of the current picture; adding the multiple TMVP candidates to a motion candidate list associated with the video block; and performing a conversion between the video block and a bitstream.

公开(公告)号：US11622131B2

公开(公告)日：2023-04-04

申请号：US17400397

申请日：2021-08-12

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

Inventor： Li Zhang ,  Kai Zhang ,  Hongbin Liu ,  Yue Wang

IPC: H04N19/11 ,  H04N19/12 ,  H04N19/70 ,  H04N19/124 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61 ,  H04N19/46

Abstract: A video processing method is provided to include: performing a conversion between a current video block of a video and a coded representation of the video, wherein the coded representation conforms to a format rule that specifies a last non-zero coefficient in a residual of the current video block and controls whether or how side information about a secondary transform tool is included in the coded representation, and wherein the secondary transform tool includes applying, during encoding, a forward secondary transform to an output of a forward primary transform applied to a residual of a video block prior to quantization, or applying, during decoding, an inverse secondary transform to an output of dequantization of the video block before applying an inverse primary transform.