公开(公告)号：US11825079B2

公开(公告)日：2023-11-21

申请号：US17886121

申请日：2022-08-11

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

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

IPC: H04N19/184 ,  H04N19/105 ,  H04N19/174 ,  H04N19/70 ,  H04N19/30 ,  H04N19/82 ,  H04N19/139 ,  H04N19/52 ,  H04N19/573 ,  H04N19/117 ,  H04N19/119 ,  H04N19/167 ,  H04N19/172 ,  H04N19/196 ,  H04N19/547 ,  H04N19/132

CPC classification number: H04N19/105 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/139 ,  H04N19/167 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/196 ,  H04N19/30 ,  H04N19/52 ,  H04N19/547 ,  H04N19/573 ,  H04N19/70 ,  H04N19/82

Abstract: Methods, apparatus, systems for video processing, including video encoding or video decoding are described. One example method includes determining an output sub-bitstream by extracting a sub-bitstream of one or more target subpictures from a bitstream of a video including video pictures. At least one of the video pictures includes one or more subpictures. The output sub-bitstream conforms to a format rule specifying that the one or more target subpictures is represented as a single subpicture in the output sub-bitstream.

公开(公告)号：US11818338B2

公开(公告)日：2023-11-14

申请号：US17975023

申请日：2022-10-27

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang

IPC: H04N19/105 ,  H04N19/172 ,  H04N19/174 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/172 ,  H04N19/174 ,  H04N19/70

Abstract: Methods and apparatus for processing of video are described. A video processing method includes performing a conversion between a video including multiple layers of one or more pictures and a bitstream of the video according to a format rule. The format rule specifies that a reference picture referred to by each inter-layer reference picture entry in a reference picture list of a slice of a current picture of a current layer satisfies a constraint. The constraint is at least one of: (a) the reference picture is an intra random access (IRAP) picture or (b) the reference picture has a temporal identifier that is less than or equal to a certain value that is a function of a maximum allowed value of a video layer to which slices from the current layer can reference. The maximum allowed value is indicated in a syntax element.

公开(公告)号：US20230362375A1

公开(公告)日：2023-11-09

申请号：US18323149

申请日：2023-05-24

Applicant: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD. ,  Bytedance Inc.

Inventor： Weijia Zhu ,  Jizheng Xu ,  Li Zhang ,  Kai Zhang ,  Ye-kui Wang ,  Yue Wang

IPC: H04N19/12 ,  H04N19/60 ,  H04N19/196 ,  H04N19/176 ,  H04N19/85 ,  H04N19/186

CPC classification number: H04N19/12 ,  H04N19/176 ,  H04N19/186 ,  H04N19/197 ,  H04N19/60 ,  H04N19/85

Abstract: A method for implementing an adaptive colour transform (ACT) mode during image/video encoding and decoding includes performing a conversion between a current video block of a video and a bitstream of the video, wherein the current video block is coded using the ACT mode, wherein the conversion includes applying an inverse ACT transform on the current video block according to a rule, and wherein the rule specifies that a clipping operation, based on a bit depth of the current video block, is applied to an input of the inverse ACT transform.

公开(公告)号：US11778220B2

公开(公告)日：2023-10-03

申请号：US17845536

申请日：2022-06-21

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/105 ,  H04N19/46 ,  H04N19/70 ,  H04N19/187

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/187 ,  H04N19/46

Abstract: A method of video processing includes performing a conversion between a video comprising a plurality of video layers and a bitstream of the video, wherein the bitstream comprises a plurality of output layer sets (OLSs), each of which comprises one or more of the plurality of video layers, and the bitstream conforms to a format rule, wherein the format rule specifies that, for a layer i, where i is an integer, the bitstream includes a set of first syntax element indicative of a first variable indicating whether the layer i is included in at least one of the plurality of OLSs.

公开(公告)号：US20230291898A1

公开(公告)日：2023-09-14

申请号：US18322428

申请日：2023-05-23

Applicant: Bytedance Inc.

Inventor： Weijia Zhu ,  Li Zhang ,  Jizheng Xu ,  Kai Zhang ,  Ye-kui Wang

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/174 ,  H04N19/80 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/117 ,  H04N19/176 ,  H04N19/174 ,  H04N19/80 ,  H04N19/186 ,  H04N19/70

Abstract: An example method of video processing includes applying, in a conversion between a video comprising multiple components and a bitstream representation of the video, a deblocking filter to video blocks of the multiple components. A deblocking filter strength for the deblocking filter of each of the multiple components is determined according to a rule that specifies to use a different manner for determining the deblocking filter strength for the video blocks of each of the multiple components.

公开(公告)号：US11700390B2

公开(公告)日：2023-07-11

申请号：US17845400

申请日：2022-06-21

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/46 ,  H04N19/159 ,  H04N19/174 ,  H04N19/169 ,  H04N19/172 ,  H04N19/184 ,  H04N19/187 ,  H04N19/70 ,  H04N19/105

CPC classification number: H04N19/46 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/187 ,  H04N19/188 ,  H04N19/70

Abstract: A method of video processing includes performing a conversion between a video including a plurality of video layers and a bitstream of the video, wherein the bitstream includes a plurality of output layer sets (OLSs), each including one or more of the plurality of video layers, and the bitstream conforms to a format rule, wherein the format rule specifies that, for an OLS having a single layer, a profile-tier-level (PTL) syntax structure that indicates a profile, a tier and a level for the OLS is included in a video parameter set for the bitstream, and the PTL syntax structure for the OLS is also included in a sequence parameter set coded in the bitstream.

公开(公告)号：US20230113601A1

公开(公告)日：2023-04-13

申请号：US18078641

申请日：2022-12-09

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/169 ,  H04N19/30

Abstract: A method of processing video data includes performing a conversion between a video and a bitstream of the video. The bitstream comprises one or more layers comprising one or more pictures comprising one or more subpictures according to a rule which specifies that, responsive to a condition, a selective processing of a first supplemental enhancement information network abstraction layer, SEI NAL, unit of a target output subpicture sub-bitstream that is extracted during a subpicture sub-bitstream extraction process

公开(公告)号：US20230111806A1

公开(公告)日：2023-04-13

申请号：US18071335

申请日：2022-11-29

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

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

IPC: H04N19/70 ,  H04N19/186 ,  H04N19/169 ,  H04N19/176

Abstract: Methods, systems and apparatus for video processing are described. One example video processing method includes performing a conversion between a video comprising a video block and a bitstream of the video according to a rule, wherein the video block is a coding tree node that includes one or more coding units, and wherein the rule specifies that a coded information of the video block is indicative of whether a coding mode is enabled for the one or more coding units of the video block.

公开(公告)号：US20230099528A1

公开(公告)日：2023-03-30

申请号：US17891800

申请日：2022-08-19

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

Inventor： Kai Zhang ,  Li Zhang ,  Ye-kui Wang ,  Zhipin Deng ,  Kui Fan ,  Jizheng Xu ,  Hongbin Liu

IPC: H04N19/129 ,  H04N19/172 ,  H04N19/169 ,  H04N19/157 ,  H04N19/70 ,  H04N19/174 ,  H04N19/119 ,  H04N19/103

Abstract: Techniques for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video picture that includes one or more tiles and one or more rectangular slices and a bitstream of the video according to a rule. The rule specifies that, for iteratively determining information about the one or more rectangular slices, a variable indicating a tile index is updated only for slices having indices that are smaller than a value equal to a number of slices in the video picture minus 1.

公开(公告)号：US20230099238A1

公开(公告)日：2023-03-30

申请号：US18076906

申请日：2022-12-07

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/187

Abstract: Several techniques for video encoding and video decoding are described. An example method of processing video data includes performing a conversion between a video including one or more subpictures and a bitstream of the video according to a format rule, wherein the format rule specifies that a first syntax element in a scalable nesting supplemental enhancement information message in the bitstream is set to a particular value in response to the scalable nesting supplemental enhancement information message including one or more subpicture level information supplemental enhancement information messages, and wherein the particular value of the first syntax element indicates that the scalable nesting supplemental enhancement information message includes one or more scalable-nested supplemental enhancement information messages that apply to a specific output video layer set.