公开(公告)号：US11818381B2

公开(公告)日：2023-11-14

申请号：US17990945

申请日：2022-11-21

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/46 ,  H04N19/105 ,  H04N19/172 ,  H04N19/70 ,  H04N19/169 ,  H04N19/423

CPC classification number: H04N19/46 ,  H04N19/105 ,  H04N19/172 ,  H04N19/188 ,  H04N19/423 ,  H04N19/70

Abstract: Methods, systems and devices for signaling picture information in access units in video bitstream processing are disclosed. An example method of video processing includes performing a conversion between a video comprising one or more pictures and a bitstream of the video, wherein the bitstream conforms to a format rule, wherein the format rule specifies that a flag and a syntax element, when included in the bitstream, are access unit (AU) specific, and wherein the flag indicates, in response to a current AU not being a first AU in the bitstream in a decoding order, whether a nominal coded picture buffer (CPB) removal time of the current AU is determined relative to (a) a nominal CPB removal time of a previous AU associated with a buffering period supplemental enhancement information (SEI) message, or (b) a nominal CPB removal time of the current AU.

公开(公告)号：US11818337B2

公开(公告)日：2023-11-14

申请号：US17944870

申请日：2022-09-14

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/105 ,  H04N19/109 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/169 ,  H04N19/31 ,  H04N19/503 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/109 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/188 ,  H04N19/31 ,  H04N19/46 ,  H04N19/503

Abstract: A video processing method includes performing a conversion between a video having one or more video layers including one or more video pictures and a bitstream of the video according to a rule. The rule specifies a condition under which no picture that has been generated by a decoding process for generating an unavailable reference picture is referred to by an active entry in a reference picture list of a current slice of a current picture.

公开(公告)号：US11812067B2

公开(公告)日：2023-11-07

申请号：US17892858

申请日：2022-08-22

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: H04N19/96 ,  H04N19/184 ,  H04N19/70 ,  H04N19/174 ,  H04N19/119 ,  H04N19/129 ,  H04N19/172 ,  H04N19/176

CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/129 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70

Abstract: A method includes performing a conversion between a video that includes at least a video tile and a bitstream of the video according to a rule. The rule specifies that a height of a slice in the video tile in units of coding tree units is derived based on a value of a first syntax element in the bitstream indicating a number of explicitly provided slice heights for slices in the video tile that includes the slice.

公开(公告)号：US11805280B2

公开(公告)日：2023-10-31

申请号：US17897967

申请日：2022-08-29

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

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

IPC: H04N19/46 ,  H04N19/58 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86 ,  H04N19/105 ,  H04N19/117 ,  H04N19/127 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/189 ,  H04N19/196 ,  H04N19/635

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/117 ,  H04N19/172 ,  H04N19/174 ,  H04N19/188 ,  H04N19/189 ,  H04N19/197 ,  H04N19/46 ,  H04N19/58 ,  H04N19/635 ,  H04N19/82 ,  H04N19/86 ,  H04N19/127

Abstract: A video processing method includes performing a conversion between a video and a bitstream of the video. The bitstream conforms to a format rule specifying a condition that controls whether or how one or more syntax elements related to picture order counts for a long term reference picture are included in a reference picture list syntax structure in the bitstream.

公开(公告)号：US11800155B2

公开(公告)日：2023-10-24

申请号：US17882375

申请日：2022-08-05

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

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

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/172 ,  H04N19/186 ,  H04N19/196 ,  H04N19/70 ,  H04N19/167

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/172 ,  H04N19/186 ,  H04N19/196 ,  H04N19/70 ,  H04N19/167

Abstract: A method includes performing a conversion between a block of a video and a bitstream of the video according to a rule. The rule specifies that whether a syntax element identifying a deblocking offset for a chroma component of the video is included in a video region level is determined based on a colour format of the video.

公开(公告)号：US11800153B2

公开(公告)日：2023-10-24

申请号：US17943366

申请日：2022-09-13

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 ,  H04N19/184 ,  H04N19/187 ,  H04N19/188 ,  H04N19/46

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 comprising one or more pictures in one or more video layers and a bitstream of a video, wherein the bitstream comprises a coded video sequence that includes one or more access units, and wherein the bitstream further comprises 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：US11792434B2

公开(公告)日：2023-10-17

申请号：US17946647

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 variable indicating whether to output a picture in an access unit is determined based on a flag indicating whether to output another picture in the access unit.

公开(公告)号：US20230319312A1

公开(公告)日：2023-10-05

申请号：US18325592

申请日：2023-05-30

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

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

IPC: H04N19/70 ,  H04N19/184

CPC classification number: H04N19/70 ,  H04N19/184

Abstract: Systems, methods and apparatus for video processing are described. The video processing may include video encoding, video decoding or video transcoding. One example method of video processing includes a method of video processing, including performing a conversion between a video region of a video and a bitstream of the video according to a format rule. The format rule specifies that an applicability of a deblocking filter for the video region is determined based on syntax elements at i) a picture parameter set level and ii) a picture level or a slice level.

公开(公告)号：US11765352B2

公开(公告)日：2023-09-19

申请号：US17835647

申请日：2022-06-08

Applicant: Bytedance Inc.

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

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

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

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：US11743506B1

公开(公告)日：2023-08-29

申请号：US17962882

申请日：2022-10-10

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

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

IPC: H04N19/70 ,  H04N19/184

CPC classification number: H04N19/70 ,  H04N19/184

Abstract: Systems, methods and apparatus for video processing are described. The video processing may include video encoding, video decoding or video transcoding. One example method of video processing includes A method of video processing, including: performing a conversion between a video region of a video and a bitstream of the video according to a format rule, and wherein the format rule specifies that an applicability of a deblocking filter for the video region is determined based on syntax elements at i) a picture parameter set level and ii) a picture level or a slice level.