公开(公告)号：US20240129536A1

公开(公告)日：2024-04-18

申请号：US18396893

申请日：2023-12-27

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

Inventor： Ye-Kui Wang ,  Yang Wang ,  Li Zhang

IPC: H04N19/70 ,  H04N19/103 ,  H04N19/136 ,  H04N19/172 ,  H04N19/184

CPC classification number: H04N19/70 ,  H04N19/103 ,  H04N19/136 ,  H04N19/172 ,  H04N19/184

Abstract: A mechanism for processing video data is disclosed. A value of an extended dependent random-access point (EDRAP) leading pictures decodable flag (edrap_leading_pictures_decodable_flag) syntax element is determined. A conversion can then be performed between a visual media data and a bitstream based on the edrap_leading_pictures_decodable_flag syntax element. The value of the edrap_leading_pictures_decodable_flag indicates whether ordering constraints are imposed on the EDRAP picture.

公开(公告)号：US20240121410A1

公开(公告)日：2024-04-11

申请号：US18528070

申请日：2023-12-04

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

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

IPC: H04N19/176 ,  H04N19/105 ,  H04N19/107 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/583

CPC classification number: H04N19/176 ,  H04N19/105 ,  H04N19/107 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/583

Abstract: Devices, systems and methods for applying intra-block copy (IBC) in video coding are described. In general, methods for integrating IBC with existing motion compensation algorithms for video encoding and decoding are described. In a representative aspect, a method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using a motion compensation algorithm, and encoding, based on the determining, the current block by selectively applying an intra-block copy to the current block. In a representative aspect, another method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using an intra-block copy, and encoding, based on the determining, the current block by selectively applying a motion compensation algorithm to the current block.

公开(公告)号：US11956448B2

公开(公告)日：2024-04-09

申请号：US18076869

申请日：2022-12-07

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

Inventor： Kai Zhang ,  Yuwen He ,  Li Zhang ,  Hongbin Liu ,  Tianliang Fu ,  Junru Li ,  Siwei Ma

IPC: H04N19/157 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/157 ,  H04N19/176 ,  H04N19/186

Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of processing video data includes determining, for a conversion between a video block of a video and a bitstream of the video, a gradient of a prediction vector at a sub-block level for the video block according to a rule, wherein the rule specifies to use a same gradient value is assigned for all samples within a sub-block of the video block; and performing the conversion based on the determining.

公开(公告)号：US11956439B2

公开(公告)日：2024-04-09

申请号：US17977471

申请日：2022-10-31

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

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

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/70

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/30 ,  H04N19/70

Abstract: A method for visual media processing includes performing a conversion between a current video unit of a visual media data and a bitstream representation of the current video unit. The bitstream representation is configured according to a format rule. The format rule specifies a level of a video segment at which one or more syntax elements indicative of a scaling factor by which a chroma residual is scaled for coding the current video unit is selectively included in the bitstream representation.

公开(公告)号：US11956432B2

公开(公告)日：2024-04-09

申请号：US17723175

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: H04N19/00 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

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 determining, for a conversion between a block of a first sub-picture of a video and a bitstream representation of the video, whether to apply a deblocking process across an edge between the block and a neighboring block of a second sub-picture based on whether a loop filtering process is allowed across subpicture boundaries. The method also includes performing the conversion based on the determining.

公开(公告)号：US11956431B2

公开(公告)日：2024-04-09

申请号：US17358700

申请日：2021-06-25

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

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

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/139 ,  H04N19/157 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/139 ,  H04N19/157 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70 ,  H04N19/172 ,  H04N19/174

Abstract: A method for processing a video includes performing a determination, by a processor, that a first video block is partitioned to include a first prediction portion that is non-rectangular and non-square; adding a first motion vector (MV) prediction candidate associated with the first prediction portion to a motion candidate list associated with the first video block, wherein the first MV prediction candidate is derived from a sub-block MV prediction candidate; and performing further processing of the first video block using the motion candidate list.

公开(公告)号：US11949861B2

公开(公告)日：2024-04-02

申请号：US18090681

申请日：2022-12-29

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

Inventor： Yang Wang ,  Hongbin Liu ,  Li Zhang

IPC: H04N19/00 ,  H04N19/117 ,  H04N19/167 ,  H04N19/186

CPC classification number: H04N19/117 ,  H04N19/167 ,  H04N19/186

Abstract: Techniques for implementing adaptive loop filtering are described. One example method of video processing includes making a first determination, for a conversion between a video unit of a video and a bitstream of the video, a first luma adaptive loop filter, ALF, boundary across which a luma adaptive loop filter is selectively applied to a luma component of the video unit and a second luma ALF boundary; making a second determination, from the second luma ALF boundary, a chroma ALF boundary across which a chroma adaptive loop filter is selectively applied for a chroma component of the video unit; and performing the conversion based on the first determination and the second determination.

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.

公开(公告)号：US20240107036A1

公开(公告)日：2024-03-28

申请号：US18508721

申请日：2023-11-14

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

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

IPC: H04N19/186 ,  H04N19/132 ,  H04N19/159 ,  H04N19/167 ,  H04N19/169 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/186 ,  H04N19/132 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/1883 ,  H04N19/70

Abstract: A method of video processing is provided that includes performing a conversion between a block of a video and a bitstream of the video. The bitstream conforms to a formatting rule specifying that a size of a merge estimation region (MER) is indicated in the bitstream and the size of the MER is based on a dimension of a video unit. The MER comprises a region used for deriving a motion candidate for the conversion.

公开(公告)号：US20240107007A1

公开(公告)日：2024-03-28

申请号：US18525099

申请日：2023-11-30

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

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

IPC: H04N19/105 ,  H04N19/139 ,  H04N19/159 ,  H04N19/17 ,  H04N19/176 ,  H04N19/189 ,  H04N19/46 ,  H04N19/52

CPC classification number: H04N19/105 ,  H04N19/139 ,  H04N19/159 ,  H04N19/17 ,  H04N19/176 ,  H04N19/189 ,  H04N19/46 ,  H04N19/52

Abstract: Devices, systems and methods for digital video coding, which include sub-block based inter prediction methods, are described. An exemplary method for video processing includes determining, for a conversion between a current block of video and a bitstream representation of the video, a maximum number of candidates in a sub-block based merge candidate list and/or whether to add sub-block based temporal motion vector prediction (SbTMVP) candidates to the sub-block based merge candidate list based on whether temporal motion vector prediction (TMVP) is enabled for use during the conversion or whether a current picture referencing (CPR) coding mode is used for the conversion, and performing, based on the determining, the conversion.