公开(公告)号：US11909966B2

公开(公告)日：2024-02-20

申请号：US17723089

申请日：2022-04-18

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

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

IPC: H04N19/70 ,  H04N19/119 ,  H04N19/117 ,  H04N19/132 ,  H04N19/82 ,  H04N19/186 ,  H04N19/46 ,  H04N19/176

CPC classification number: H04N19/119 ,  H04N19/117 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

Abstract: An example method of video processing includes performing a conversion between a picture of a video and a bitstream representation of the video. The picture includes one or more sub-pictures, and the bitstream representation conforms to a format rule that specifies that a length of a syntax element is equal to Ceil(Log 2(SS)) bits. SS is greater than 0, and the syntax element indicating a horizontal or a vertical position of a top-left corner of a coding tree unit of a sub-picture of the picture.

公开(公告)号：US11909951B2

公开(公告)日：2024-02-20

申请号：US17374160

申请日：2021-07-13

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

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

IPC: H04N19/103 ,  H04N19/117 ,  H04N19/157 ,  H04N19/176 ,  H04N19/184 ,  H04N19/159 ,  H04N19/52 ,  H04N19/513

CPC classification number: H04N19/103 ,  H04N19/117 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/52 ,  H04N19/513

Abstract: A method for processing video data is provided to include: determining whether a sharing of merge list information is enabled for a merge sharing node that corresponds to an ancestor node in a coding unit split tree to allow leaf coding units of the ancestor node in the coding unit split tree to use the merge list information; and performing a conversion between a current video block of a video and a bitstream of the video based on the determining.

公开(公告)号：US20240056599A1

公开(公告)日：2024-02-15

申请号：US18486641

申请日：2023-10-13

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

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

IPC: H04N19/52 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/51 ,  H04N19/593

CPC classification number: H04N19/52 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/51 ,  H04N19/593

Abstract: The present disclosure relates to interaction between intra block copy mode and inter prediction tools. A method for video processing includes determining that an intra block copy (IBC) mode is applied to a current video block of a video. In the IBC mode, at least one reference picture used by the current video block is a current picture where the current video block is located. The method also includes making a decision regarding a disabling of a specific coding mode for the current block. The specific coding mode uses a motion vector and a non-current picture to derive a prediction of a video block. The method further includes performing, based on the decision, a conversion between the current video block and the bitstream representation.

公开(公告)号：US20240056568A1

公开(公告)日：2024-02-15

申请号：US18489195

申请日：2023-10-18

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

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

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: A method of video processing includes maintaining, for a conversion between a current video block of a current picture of a visual media data and a bitstream representation of the visual media data, a buffer including reference samples from the current picture for a derivation of prediction samples of the current video block. One or more reference samples in the buffer that are marked unavailable for the derivation have values outside of a pixel value range.

公开(公告)号：US11902557B2

公开(公告)日：2024-02-13

申请号：US17957375

申请日：2022-09-30

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang

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

CPC classification number: H04N19/46 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  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 including one or more pictures including one or more slices and a coded representation of the video, wherein the coded representation conforms to a format rule that specifies that a condition of a field in the coded representation controls a constraint on a slice type or whether the slice type is included in the coded representation for a video slice, wherein the field includes a general constraint flag, a network abstraction layer unit type or whether the video slice is in a first video picture of an access unit.

公开(公告)号：US20240048699A1

公开(公告)日：2024-02-08

申请号：US18320782

申请日：2023-05-19

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

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

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70 ,  H04N19/117 ,  H04N19/186 ,  H04N19/46 ,  H04N19/82

CPC classification number: H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/82 ,  H04N19/117 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

Abstract: An example method of video processing includes: determining, for a conversion between a chroma block of a current processing unit of a current subpicture of a current picture of a video and a bitstream of the video, that a cross component adaptive loop filtering operation is applied to the chroma block, wherein the current picture comprises one or more subpictures; and performing the conversion based on the determining, wherein in the cross component adaptive loop filtering operation, a chroma sample of the chroma block is filtered based on information of luma samples, and wherein one or more luma samples located outside the current processing unit are excluded from the filtering of the chroma sample.

公开(公告)号：US20240048689A1

公开(公告)日：2024-02-08

申请号：US18484884

申请日：2023-10-11

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：US20240040122A1

公开(公告)日：2024-02-01

申请号：US18485531

申请日：2023-10-12

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

Inventor： Kai Zhang ,  Li Zhang ,  Zhipin Deng

IPC: H04N19/122 ,  H04N19/61 ,  H04N19/96 ,  H04N19/18 ,  H04N19/176

CPC classification number: H04N19/122 ,  H04N19/61 ,  H04N19/96 ,  H04N19/18 ,  H04N19/176

Abstract: A mechanism for processing video data is disclosed. A sign prediction usage for one or more residual coefficients in a block is determined based on dimensions of the block. A conversion is then performed between a visual media data and a bitstream based on the residual coefficients in the block.

公开(公告)号：US20240040119A1

公开(公告)日：2024-02-01

申请号：US18483111

申请日：2023-10-09

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

Inventor： Kai Zhang ,  Li Zhang ,  Zhipin Deng ,  Na Zhang ,  Yang Wang

IPC: H04N19/119 ,  H04N19/184 ,  H04N19/96 ,  H04N19/176 ,  H04N19/136 ,  H04N19/70

CPC classification number: H04N19/119 ,  H04N19/184 ,  H04N19/96 ,  H04N19/176 ,  H04N19/136 ,  H04N19/70 ,  H04N19/124

Abstract: A mechanism and method for processing video data is disclosed. The video processing method includes applying a first partitioning scheme to a parent video unit to obtain a current video unit and performing a conversion between a video media data and a bitstream based on application of the first partitioning scheme.

公开(公告)号：US20240022754A1

公开(公告)日：2024-01-18

申请号：US18472353

申请日：2023-09-22

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

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

IPC: H04N19/50 ,  H04N19/117 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/157 ,  H04N19/593

CPC classification number: H04N19/50 ,  H04N19/117 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/157 ,  H04N19/593

Abstract: A method for video bitstream processing includes generating, using a first video block derived from a third video block of a first component and having a first size, a prediction block for a second video block of a video related to a second component, where the first component is different from the second component, and where the second video block has a second size that is different from the first size. The method also includes performing, using the prediction block, a conversion between the second video block and a bitstream representation of the video according to a two-step cross-component prediction mode (TSCPM).