公开(公告)号：US11863781B2

公开(公告)日：2024-01-02

申请号：US17891603

申请日：2022-08-19

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang

IPC: H04N19/46 ,  H04N19/169 ,  H04N19/174 ,  H04N19/70 ,  H04N19/105 ,  H04N19/186 ,  H04N19/172

CPC classification number: H04N19/46 ,  H04N19/105 ,  H04N19/172 ,  H04N19/174 ,  H04N19/186 ,  H04N19/188 ,  H04N19/70

Abstract: A method includes performing a conversion between a current slice of a current picture of a video and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that a general constraint information syntax structure, which comprises one or more constraint flags indicating constraints on an explicit weighted prediction being enabled for slices of a set of pictures, is present.

公开(公告)号：US11863762B2

公开(公告)日：2024-01-02

申请号：US17992246

申请日：2022-11-22

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

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

IPC: H04N19/169 ,  H04N19/70 ,  H04N19/96 ,  H04N19/174 ,  H04N19/172 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/105

CPC classification number: H04N19/172 ,  H04N19/105 ,  H04N19/174 ,  H04N19/184 ,  H04N19/186 ,  H04N19/188 ,  H04N19/46 ,  H04N19/70 ,  H04N19/96

Abstract: Embodiments for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video having one or more layers having one or more video pictures having one or more subpictures and a bitstream of the video according to a rule, wherein the rule defines network abstraction layer (NAL) units to be extracted from a bitstream during a sub-bitstream extraction process to output a sub-bitstream, wherein the rule further specifies that one or more inputs to the sub-bitstream extraction process include a target output layer set (OLS) index (targetOlsIdx) that identifies an OLS index of a target OLS and is equal to an index to a list of OLSs specified by a video parameter set, and wherein the one or more inputs satisfy a set of conditions.

公开(公告)号：US20230421817A1

公开(公告)日：2023-12-28

申请号：US18450787

申请日：2023-08-16

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/33 ,  H04N19/52 ,  H04N19/96

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/33 ,  H04N19/52 ,  H04N19/96

Abstract: Methods, devices and systems for video coding and encoding, which include conforming to constraints on collocated pictures, are described. One example method of video processing includes performing a conversion between a video including a current picture and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that the bitstream includes a flag for disabling a use of a temporal motion vector prediction tool for the current picture based on whether a reference picture in a decoded picture buffer has a spatial resolution and a scaling window offset that are identical to that of the current picture.

公开(公告)号：US20230412847A1

公开(公告)日：2023-12-21

申请号：US18457566

申请日：2023-08-29

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/169 ,  H04N19/46 ,  H04N19/184 ,  H04N19/187

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

Abstract: Methods, devices, and systems for configuring different access units in scalable video coding are described. In one example aspect, a method of video processing include performing a conversion between a video having one or more pictures in one or more video layers and a bitstream of a video. The bitstream includes a coded video sequence that has one or more access units. The bitstream further includes a first syntax element indicating whether an access unit includes a picture for each video layer making up the coded video sequence.

公开(公告)号：US11849125B2

公开(公告)日：2023-12-19

申请号：US18077831

申请日：2022-12-08

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

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

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

Abstract: A method of video data processing includes performing a conversion between a video and a bitstream of the video. The bitstream comprises multiple layers comprising one or more subpictures according to a rule which specifies that, during a subpicture sub-bitstream extraction process by which an output bitstream is extracted from the bitstream, a supplemental enhancement information network abstraction layer unit, SEI NAL unit, that includes a scalable nested SEI message that is not applicable to the output bitstream is omitted in the output bitstream.

公开(公告)号：US11843789B2

公开(公告)日：2023-12-12

申请号：US18077810

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 includes one or more output layer sets comprising one or more video layers according to a format rule, wherein the format rule specifies that a non-scalable-nested supplemental enhancement information, SEI, message that includes information regarding hypothetical reference decoder, HRD, is applicable to all output layer sets that include same video layers as the bitstream.

公开(公告)号：US11838554B2

公开(公告)日：2023-12-05

申请号：US17898073

申请日：2022-08-29

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

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

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/11 ,  H04N19/122 ,  H04N19/132 ,  H04N19/139 ,  H04N19/186 ,  H04N19/61 ,  H04N19/107 ,  H04N19/172 ,  H04N19/174 ,  H04N19/169 ,  H04N19/30 ,  H04N19/117 ,  H04N19/196

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/117 ,  H04N19/122 ,  H04N19/132 ,  H04N19/139 ,  H04N19/172 ,  H04N19/174 ,  H04N19/186 ,  H04N19/188 ,  H04N19/196 ,  H04N19/30 ,  H04N19/61

Abstract: Methods, systems, apparatuses for video processing are described. A method for processing video includes performing a conversion between a video and a bitstream of the video according to a format rule, and wherein the format rule specifies to include, in a general constraint syntax structure associated with the video, one or more general constraint flags indicating whether corresponding syntax elements are included in a sequence parameter set (SPS) and/or a picture parameter set (PPS) and/or a picture header (PH) and/or a slice header (SH) or to constrain values of the syntax elements in the SPS and/or the PPS and/or the PH and/or the SH.

公开(公告)号：US11831894B2

公开(公告)日：2023-11-28

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：US11825105B2

公开(公告)日：2023-11-21

申请号：US18076886

申请日：2022-12-07

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/423 ,  H04N19/132 ,  H04N19/174 ,  H04N19/105 ,  H04N19/152

CPC classification number: H04N19/423 ,  H04N19/105 ,  H04N19/132 ,  H04N19/152 ,  H04N19/174

Abstract: Methods, systems and devices for implementing constraints used in video encoding and video decoding are described. An example method of video processing includes performing a conversion between a video including one or more pictures including one or more slices and a bitstream of the video, wherein the bitstream is organized into a plurality of access units (AUs), AU 0 to AU n, based on a format rule, where n is a positive integer, wherein the format rule specifies a relationship between removal times of each of the plurality of AUs from a coded picture buffer (CPB) during decoding and a number of slices in the each of the plurality of AUs.

公开(公告)号：US11825102B2

公开(公告)日：2023-11-21

申请号：US17992176

申请日：2022-11-22

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: 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 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.