公开(公告)号：US11997318B2

公开(公告)日：2024-05-28

申请号：US17977492

申请日：2022-10-31

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Jizheng Xu

IPC: H04N19/00 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/86

CPC classification number: H04N19/86 ,  H04N19/176 ,  H04N19/186 ,  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 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：US11973968B2

公开(公告)日：2024-04-30

申请号：US17990959

申请日：2022-11-21

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

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

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

Abstract: Methods, systems and devices for signaling of coded buffer picture information 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 first syntax element, when included in the bitstream, is access unit (AU) specific, wherein the value of the first syntax element is based on whether an associated AU is an intra random access points (IRAP) AU or a gradual decoding refresh (GDR) AU, and wherein the value of the first syntax element specifies (i) whether a second syntax element is present in a buffering period supplemental enhancement information (SEI) message, and (ii) whether alternative timing information is present in a picture timing SEI message in a current buffering period.

公开(公告)号：US20240129544A1

公开(公告)日：2024-04-18

申请号：US18531014

申请日：2023-12-06

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

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

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：US20240129539A1

公开(公告)日：2024-04-18

申请号：US18516507

申请日：2023-11-21

Applicant: Bytedance Inc.

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

IPC: H04N19/70 ,  H04N19/119 ,  H04N19/134 ,  H04N19/136 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/96

CPC classification number: H04N19/70 ,  H04N19/119 ,  H04N19/134 ,  H04N19/136 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/1883 ,  H04N19/96

Abstract: A method includes making a determination, according to a rule, about whether a height of a subpicture of a video picture of a video is less than a height of a tile row of the video picture; and performing, using the determination, a conversion between the video and a bitstream of the video.

公开(公告)号：US11956476B2

公开(公告)日：2024-04-09

申请号：US17860687

申请日：2022-07-08

Applicant: Bytedance Inc.

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

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/159 ,  H04N19/169 ,  H04N19/174 ,  H04N19/184 ,  H04N19/187 ,  H04N19/44 ,  H04N19/46 ,  H04N19/82 ,  H04N19/91 ,  H04N19/117

CPC classification number: H04N19/82 ,  H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/184 ,  H04N19/187 ,  H04N19/188 ,  H04N19/44 ,  H04N19/46 ,  H04N19/70 ,  H04N19/91 ,  H04N19/117

Abstract: A method of video processing includes performing a conversion between a video and a bitstream of the video according to a rule, wherein the rule specifies that a first syntax element, which indicates a number of parameters for an output layer set (OLS) hypothetical reference decoder (HRD) in a video parameter set (VPS) associated with the video, is less than a first predetermined threshold.

公开(公告)号：US20240107047A1

公开(公告)日：2024-03-28

申请号：US18520297

申请日：2023-11-27

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang

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

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：US11936865B2

公开(公告)日：2024-03-19

申请号：US17901270

申请日：2022-09-01

Applicant: Bytedance Inc.

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

IPC: H04N11/02 ,  H04N19/12 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60 ,  H04N19/70

CPC classification number: H04N19/12 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60 ,  H04N19/70

Abstract: Several techniques for video encoding and video decoding are described. A method for video processing includes performing a conversion between a video block of a video and a bitstream of the video, wherein the video block uses a low frequency non-separable transform for the conversion, wherein the bitstream conforms to a format rule that specifies that a syntax element is included at a syntax level for the bitstream, wherein the syntax element is indicative of whether use of a scaling matrix which is derived from a reference scaling list is enabled for the video block, and wherein the syntax level is a sequence level, a picture level, or a slice level.

公开(公告)号：US20240080493A1

公开(公告)日：2024-03-07

申请号：US18510269

申请日：2023-11-15

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/70 ,  H04N19/169 ,  H04N19/30 ,  H04N19/44

CPC classification number: H04N19/70 ,  H04N19/188 ,  H04N19/30 ,  H04N19/44

Abstract: Devices, systems and methods for specifying the syntax and semantics of the decoding parameter set (DPS) are described. One example method of video processing includes determining, for a conversion between a video and a bitstream of the video, that each output layer set (OLS) in a coded video sequence (CVS) in the bitstream conforms to at least one profile-tier-level (PTL) syntax structure included in a data structure associated with decoding parameter semantics in the bitstream, and performing, based on the determining, the conversion, wherein the PTL syntax structure indicates a profile, a tier, and a level of the bitstream.

公开(公告)号：US20240048771A1

公开(公告)日：2024-02-08

申请号：US18476823

申请日：2023-09-28

Applicant: Bytedance Inc.

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

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

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/174 ,  H04N19/46

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：US11889060B2

公开(公告)日：2024-01-30

申请号：US17969976

申请日：2022-10-20

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/159 ,  H04N19/174 ,  H04N19/169 ,  H04N19/105

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/188

Abstract: Methods and apparatus for processing of video are described. The processing may include video encoding, decoding, or transcoding. One example video processing method includes performing a conversion between a video including one or more pictures including one or more subpictures and a bitstream of the video. The bitstream conforms to a format rule that specifies that a subpicture cannot be a random access type of subpicture in response to the subpicture not being a leading subpicture of an intra random access point subpicture. The leading subpicture precedes the intra random access point subpicture in output order.