公开(公告)号：US11956454B2

公开(公告)日：2024-04-09

申请号：US18083908

申请日：2022-12-19

Applicant: Bytedance Inc.

Inventor： Ye-Kui Wang

IPC: H04N19/423 ,  H04N19/169 ,  H04N19/70

CPC classification number: H04N19/423 ,  H04N19/188 ,  H04N19/70

Abstract: Embodiments for video encoding and video decoding are described. One example method includes performing a conversion between a video and a bitstream of the video, wherein the bitstream includes one or more pictures including one or more subpictures according to a rule, and wherein the rule specifies that, responsive to a condition, a rewriting operation is performed on referenced one or more sequence parameter sets during a subpicture sub-bitstream extraction process by which a target output sub-bitstream is extracted from the bitstream.

公开(公告)号：US11812062B2

公开(公告)日：2023-11-07

申请号：US17850670

申请日：2022-06-27

Applicant: Bytedance Inc.

Inventor： Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/184 ,  H04N19/46 ,  H04N19/174 ,  H04N19/169

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

Abstract: Methods, devices and systems for signaling the use of subpictures in coded video pictures are described. One example method of video processing includes performing a conversion between a video and a bitstream of a video, wherein the bitstream conforms to a format rule, wherein the format rule specifies that a first syntax element signaled in a sequence parameter set (SPS) of the bitstream is indicative of a length of identifiers of subpictures in the SPS, and wherein the signaling of the first syntax element is independent of a value of a second syntax element that is indicative of explicit signaling of the identifiers of the subpictures in the SPS or a picture parameter set (PPS).

公开(公告)号：US12244868B2

公开(公告)日：2025-03-04

申请号：US18511565

申请日：2023-11-16

Applicant: Bytedance Inc.

Inventor： Ye-Kui Wang ,  Li Zhang

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/30 ,  H04N19/85

Abstract: Methods, systems, and devices for signaling of general constraint information are described. An 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 rule. The rule specifies that a syntax structure in a profile-tier-level syntax structure is after a syntax element. The syntax structure includes information related to general constraint information (GCI) for the bitstream. The syntax element indicates a level to which an output layer set associated with the profile-tier-level syntax structure conforms.

公开(公告)号：US20250071332A1

公开(公告)日：2025-02-27

申请号：US18942138

申请日：2024-11-08

Applicant: Bytedance Inc.

Inventor： Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/136 ,  H04N19/169

Abstract: A mechanism for processing video data is disclosed. A type for a value taken by a region identifier (ID) in a region identifier (ID) type field (region_id_type) is determined. The type for the value taken by the region ID is coded in the region ID type field using four or less bits. A conversion between the visual media data and a media data file is performed based on the type for the value taken by the region ID in the region ID type field.

公开(公告)号：US11902558B2

公开(公告)日：2024-02-13

申请号：US17957387

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 comprising a picture in a video unit and a bitstream of the video according to a format rule. The format rule specifies that, responsive to a width of a picture being equal to a maximum allowed picture width in the video unit and a height of the picture being equal to a maximum allowed picture height in the video unit, a conformance window flag in a picture parameter set corresponding to the picture is set to a zero value.

公开(公告)号：US11765393B2

公开(公告)日：2023-09-19

申请号：US17850670

申请日：2022-06-27

Applicant: Bytedance Inc.

Inventor： Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/184 ,  H04N19/46 ,  H04N19/174 ,  H04N19/169

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

Abstract: Methods, devices and systems for signaling the use of subpictures in coded video pictures are described. One example method of video processing includes performing a conversion between a video and a bitstream of a video, wherein the bitstream conforms to a format rule, wherein the format rule specifies that a first syntax element signaled in a sequence parameter set (SPS) of the bitstream is indicative of a length of identifiers of subpictures in the SPS, and wherein the signaling of the first syntax element is independent of a value of a second syntax element that is indicative of explicit signaling of the identifiers of the subpictures in the SPS or a picture parameter set (PPS).

公开(公告)号：US20230239483A1

公开(公告)日：2023-07-27

申请号：US18194803

申请日：2023-04-03

Applicant: Bytedance Inc.

Inventor： Ye-Kui Wang

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

CPC classification number: H04N19/30 ,  H04N19/174 ,  H04N19/70 ,  H04N19/188

Abstract: A method for video processing is described. The method includes performing a conversion between a video including one or more pictures including one or more subpictures including 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.