公开(公告)号：US20240098273A1

公开(公告)日：2024-03-21

申请号：US18517328

申请日：2023-11-22

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang

IPC: H04N19/157 ,  H04N19/103 ,  H04N19/105 ,  H04N19/136 ,  H04N19/172 ,  H04N19/174 ,  H04N19/70

CPC classification number: H04N19/157 ,  H04N19/103 ,  H04N19/105 ,  H04N19/136 ,  H04N19/172 ,  H04N19/174 ,  H04N19/70

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 current picture of a video and a bitstream of the video according to a rule. The rule specifies that responsive to a picture being referred to by an inter-layer reference picture (ILRP) entry in a reference picture list of a slice of the current picture, the picture is allowed to have a gradual decoding refresh (GDR) type and a syntax element specifying a recovery point of the picture in an output order is 0.

公开(公告)号：US20240089503A1

公开(公告)日：2024-03-14

申请号：US18503900

申请日：2023-11-07

Applicant: Bytedance Inc.

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

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

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

Abstract: Methods and apparatus for video processing are described. The processing may include video encoding, video decoding or video transcoding. An example video processing method includes performing a conversion between a video comprising one or more pictures and a bitstream of the video according to a format rule, and wherein the format rule specifies that, in response to satisfying one or more conditions, a syntax element indicating whether a first syntax structure providing a profile, a tier and a level information and a second syntax structure providing decoded picture buffer information are present in a sequence parameter set is set to be equal to 1 to indicate that the first syntax structure and the second syntax structure are present in the sequence parameter set.

公开(公告)号：US11930193B2

公开(公告)日：2024-03-12

申请号：US17992181

申请日：2022-11-22

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/547 ,  H04N19/169 ,  H04N19/172 ,  H04N19/31 ,  H04N19/70

CPC classification number: H04N19/188 ,  H04N19/172 ,  H04N19/31 ,  H04N19/70

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 including one or more layers and a bitstream of the video according to a rule, wherein the rule specifies, in a process of sub-bitstream extraction to output an output sub-bitstream, whether to generate non-scalable nested supplementary enhancement information (SEI) messages by extracting scalable-nested SEI messages from a scalable nesting SEI message based on a first flag indicating whether the SEI message applies to specific output layer sets (OLSs) and a second flag indicating whether the SEI message applies to all subpictures or only to specific subpictures.

公开(公告)号：US11924446B2

公开(公告)日：2024-03-05

申请号：US18078641

申请日：2022-12-09

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/70 ,  H04N19/169 ,  H04N19/172 ,  H04N19/182 ,  H04N19/184 ,  H04N19/30 ,  H04N19/597

CPC classification number: H04N19/184 ,  H04N19/172 ,  H04N19/182 ,  H04N19/188 ,  H04N19/30 ,  H04N19/597 ,  H04N19/70

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：US11910022B2

公开(公告)日：2024-02-20

申请号：US17946637

申请日：2022-09-16

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/70 ,  H04N19/132 ,  H04N19/172 ,  H04N19/30 ,  H04N19/423 ,  H04N19/593 ,  H04N19/186 ,  H04N19/174

CPC classification number: H04N19/70 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/186 ,  H04N19/30 ,  H04N19/423 ,  H04N19/593

Abstract: Methods and apparatus for video processing, including coding and decoding, are described. One example video processing method includes performing a conversion between a video having one or more video layers and a bitstream of the video according to a format rule, and wherein the format rule specifies that a value of a flag that indicates whether to remove pictures previously decoded and stored in a decoded picture buffer from the decoded picture buffer when decoding an access unit of a certain type is included in the bitstream.

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：US20240048736A1

公开(公告)日：2024-02-08

申请号：US18488692

申请日：2023-10-17

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/169 ,  H04N19/31 ,  H04N19/70 ,  H04N19/172

CPC classification number: H04N19/188 ,  H04N19/31 ,  H04N19/70 ,  H04N19/172

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 including multiple layers and a bitstream of the video according to a rule, wherein the rule specifies that, in a first process of sub-bitstream extraction to output a first output sub-bitstream, the first output sub-bitstream is extracted without removing network abstraction layer (NAL) units of a particular type and having a particular NAL unit header identifier value, and wherein the particular type includes an access unit delimiter (AUD) NAL unit.

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：US11871012B2

公开(公告)日：2024-01-09

申请号：US18077886

申请日：2022-12-08

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

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

CPC classification number: H04N19/184 ,  H04N19/136 ,  H04N19/188 ,  H04N19/30 ,  H04N19/433 ,  H04N19/46 ,  H04N19/70

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 comprises one or more output layer sets comprising one or more video layers according to a rule, wherein the rule specifies a particular decoding order between a subpicture level information (SLI) supplemental enhancement information (SEI) message and a buffering period (BP) SEI message that apply to a particular output layer set, responsive to a condition that the SLI SEI message and the BP SEI message are included in an access unit.

公开(公告)号：US11870979B2

公开(公告)日：2024-01-09

申请号：US17886084

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

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 performing a conversion between a video comprising a video picture that includes a video slice and a bitstream of the video. The bitstream conforms to a format rule specifying that, in case a slice type of the video slice is type P and temporal motion vector prediction is enabled, usage of reference picture resampling (RPR) for a reference picture in a collocated reference picture list is disabled. The reference picture is indicated by a reference index of a collocated picture of the video slice used for the temporal motion vector prediction.