公开(公告)号：US11924474B2

公开(公告)日：2024-03-05

申请号：US17973810

申请日：2022-10-26

Applicant: Bytedance Inc.

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

IPC: H04N19/70 ,  H04N19/105 ,  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：US20250142127A1

公开(公告)日：2025-05-01

申请号：US19011018

申请日：2025-01-06

Applicant: Bytedance Inc.

Inventor： Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/136 ,  H04N19/169 ,  H04N19/184 ,  H04N19/30 ,  H04N19/433 ,  H04N19/46

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 comprising one or more output layer sets according to a rule, wherein the rule specifies that a supplemental enhancement information (SEI) network abstraction layer (NAL) unit that includes a scalable-nested SEI message carrying picture timing information is not included due to use of a same picture timing in all output layer sets in the bitstream.

公开(公告)号：US12262059B2

公开(公告)日：2025-03-25

申请号：US18516507

申请日：2023-11-21

Applicant: Bytedance Inc.

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

IPC: H04N19/134 ,  H04N19/119 ,  H04N19/136 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70 ,  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：US11863794B2

公开(公告)日：2024-01-02

申请号：US17894832

申请日：2022-08-24

Applicant: Bytedance Inc.

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

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

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

Abstract: A method includes performing a conversion between a video including a video picture and a bitstream of the video according to a rule, wherein the video picture including a subpicture, a tile, and a slice, and wherein the rule specifies that, due to the subpicture including the slice that is partitioned from the tile, the conversion is performed by refraining from counting a height of the subpicture using a number of tiles of the video picture.

公开(公告)号：US11856234B2

公开(公告)日：2023-12-26

申请号：US17894888

申请日：2022-08-24

Applicant: Bytedance Inc.

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

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

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

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：US20250039478A1

公开(公告)日：2025-01-30

申请号：US18914663

申请日：2024-10-14

Applicant: Bytedance Inc.

Inventor： Ye-Kui Wang

IPC: H04N21/2343 ,  H04N21/4402

Abstract: A mechanism for processing video data is disclosed. A conversion is performed between a visual media data and a media data file based on one or more extended dependent random access point (EDRAP) samples. Each EDRAP sample shall be a first sample in segment or a subsegment of a main stream representation (MSR).

公开(公告)号：US20240080468A1

公开(公告)日：2024-03-07

申请号：US18505400

申请日：2023-11-09

Applicant: Bytedance Inc.

Inventor： Ye-Kui Wang

IPC: H04N19/46 ,  H04N19/105 ,  H04N19/159 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/187 ,  H04N19/70

CPC classification number: H04N19/46 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/187 ,  H04N19/188 ,  H04N19/70

Abstract: A method of video processing includes performing a conversion between a video including one or more scalable video layers and a bitstream of the video. The video includes one or more video pictures including one or more slices. The bitstream conforms to a format rule. The format rule specifies that a value of a field indicative of a slice type of a slice is set to indicate a type of intra slice in case that a corresponding network abstraction layer unit type is in a predetermined range and that a corresponding video layer flag indicates that a video layer containing the slice does not use inter-layer prediction.

公开(公告)号：US11917132B2

公开(公告)日：2024-02-27

申请号：US17945273

申请日：2022-09-15

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 comprising a current picture comprising a current slice and a bitstream of the video according to a rule. The rule specifies a condition under which a reference picture list for the current slice is disallowed to have an active entry that refers to a picture that precedes, in a decoding order or an output order, an intra random access point picture associated with the current picture.

公开(公告)号：US11849150B2

公开(公告)日：2023-12-19

申请号：US17955856

申请日：2022-09-29

Applicant: Bytedance Inc.

Inventor： Li Zhang ,  Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/184 ,  H04N19/186

CPC classification number: H04N19/70 ,  H04N19/184 ,  H04N19/186

Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video picture of a video comprising one or more slices and a bitstream of the video picture according to a rule. The rule specifies that that whether a first syntax element indicating a usage of a coding tool is present at a first level is based on a syntax flag indicating whether a syntax structure of a second level is not present at the first level, wherein the second level is higher than the first level, and wherein the second level is the video picture level or higher than the video picture level.

公开(公告)号：US20250106400A1

公开(公告)日：2025-03-27

申请号：US18942064

申请日：2024-11-08

Applicant: Bytedance Inc.

Inventor： Ye-Kui Wang

IPC: H04N19/132

Abstract: A mechanism for processing visual media data is disclosed. An extended dependent random access point (EDRAP) sample is determined. The EDRAP sample is a sample for which all subsequent samples in both decoding and output order can be correctly decoded provided that required preceding streaming access point (SAP) or EDRAP samples are available for referencing when decoding the EDRAP sample and the subsequent samples. A conversion is performed between a visual media data and a media data file based on the EDRAP sample.