公开(公告)号：US11665343B2

公开(公告)日：2023-05-30

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：US11641477B2

公开(公告)日：2023-05-02

申请号：US17838522

申请日：2022-06-13

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/30 ,  H04N19/174 ,  H04N19/70 ,  H04N19/169

Abstract: A method for video processing is described. The method includes performing a conversion between a video comprising one or more pictures comprising one or more subpictures comprising one or more slices and a bitstream representation of the video according to a rule, and wherein the bitstream representation includes a number of coded units, wherein the rule specifies that a decoding order of coded units within a subpicture is in an increasing order of subpicture level slice index values of the coded units.

公开(公告)号：US20230115541A1

公开(公告)日：2023-04-13

申请号：US17992270

申请日：2022-11-22

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

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

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

Abstract: Methods, systems, apparatus for video processing are described. The processing may include encoding, decoding or transcoding. One example video processing method includes performing a conversion between a video and a bitstream of the video according to a rule, and wherein the rule specifies that a syntax element is included in a profile, tier, level information syntax structure to indicate whether one or more general constraint information syntax elements are included in a general constraint information syntax structure and/or whether the general constraint information syntax structure is included in the profile, tier, level information syntax structure.

公开(公告)号：US20230114860A1

公开(公告)日：2023-04-13

申请号：US17973810

申请日：2022-10-26

Applicant: Bytedance Inc.

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

IPC: H04N19/70 ,  H04N19/46 ,  H04N19/105 ,  H04N19/174

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 performing a conversion between a video including one or more pictures and a bitstream of the video according to a format rule. The format rule specifies that a first syntax element that indicates whether motion vector difference for a particular reference picture list (RPL) is indicated is conditionally included in the bitstream based on (i) whether a second syntax element indicating whether an RPL information is included in a picture header and/or (ii) a number of reference pictures in the particular RPL in case that the RPL information is present in the picture header.

公开(公告)号：US20230113199A1

公开(公告)日：2023-04-13

申请号：US18079303

申请日：2022-12-12

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/30 ,  H04N19/169 ,  H04N19/136 ,  H04N19/172

Abstract: Methods, systems and devices for using end of sequence indications 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 multiple layers in multiple access units, AUs, including one or more pictures according to a format rule, wherein the format rule specifies that, responsive to an end of sequence (EOS) network abstraction layer (NAL) unit for a first layer being present in a first access unit (AU) in the bitstream, a subsequent picture of each of one or more higher layers of the first layer in an AU following the first AU in the bitstream is a coded layer video sequence start (CLVSS) picture.

公开(公告)号：US20230103059A1

公开(公告)日：2023-03-30

申请号：US18076886

申请日：2022-12-07

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/423 ,  H04N19/132 ,  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：US20230095312A1

公开(公告)日：2023-03-30

申请号：US18077823

申请日：2022-12-08

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

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

Abstract: A method of processing video data includes performing a conversion between a video and a bitstream of the video. The bitstream includes one or more layers including one or more sublayers including one or more pictures including one or more subpictures according to a rule that specifies a rewriting operation selectively performed on one or more syntax structures during a subpicture sub-bitstream extraction process by which an output target sub-bitstream is extracted from the bitstream. The one or more syntax elements include information of the output target sub-bitstream.

公开(公告)号：US20230090012A1

公开(公告)日：2023-03-23

申请号：US17977492

申请日：2022-10-31

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Jizheng Xu

IPC: H04N19/86 ,  H04N19/176 ,  H04N19/70 ,  H04N19/186

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 picture of a video and a bitstream of the video. A first syntax element in a first video unit level specifying a deblocking parameter offset for β divided by 2 applied to a chroma component for one or more slices in a first video unit and a second syntax element in the first video unit level specifying a deblocking parameter offset for tC divided by 2 applied to the chroma component for the one or more slices in the first video unit are determined according to a rule in response to the first syntax element and the second syntax element not included in the bitstream.

公开(公告)号：US20230082583A1

公开(公告)日：2023-03-16

申请号：US17990267

申请日：2022-11-18

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

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

IPC: H04N19/70 ,  H04N19/30 ,  H04N19/186 ,  H04N19/132 ,  H04N19/105 ,  H04N19/174 ,  H04N19/184 ,  H04N19/119

Abstract: Video processing, including video coding, video decoding and video transcoding, is described. One example method includes performing a conversion between a video comprising a video picture and a bitstream of a video according to a rule, where the rule specifies that syntax elements indicate a first width and a first height of a scaling window for the video picture, and where the rule specifies that a range of permissible values for the syntax elements include values greater than or equal to two times a second width of the video picture and two times a second height of the video picture.

公开(公告)号：US20230079188A1

公开(公告)日：2023-03-16

申请号：US17992176

申请日：2022-11-22

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

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

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.