公开(公告)号：US20220400256A1

公开(公告)日：2022-12-15

申请号：US17886121

申请日：2022-08-11

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

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

IPC: H04N19/117 ,  H04N19/70 ,  H04N19/196 ,  H04N19/184 ,  H04N19/172 ,  H04N19/82 ,  H04N19/119 ,  H04N19/167

Abstract: Methods, apparatus, systems for video processing, including video encoding or video decoding are described. One example method includes determining an output sub-bitstream by extracting a sub-bitstream of one or more target subpictures from a bitstream of a video including video pictures. At least one of the video pictures includes one or more subpictures. The output sub-bitstream conforms to a format rule specifying that the one or more target subpictures is represented as a single subpicture in the output sub-bitstream.

公开(公告)号：US20220394304A1

公开(公告)日：2022-12-08

申请号：US17887275

申请日：2022-08-12

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

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

IPC: H04N19/70 ,  H04N19/82 ,  H04N19/30

Abstract: Methods, apparatus, systems for video processing, including video encoding or video decoding are described. One example method includes performing a conversion between a video including a video picture that includes one or more subpictures and a bitstream of the video. The bitstream conforms to a format rule specifying that a first syntax element indicating whether an operation is performed across a boundary of a subpicture in the coded layer video sequence is selectively included responsive to a number of subpictures in the video picture.

公开(公告)号：US20220394250A1

公开(公告)日：2022-12-08

申请号：US17888227

申请日：2022-08-15

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

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

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/172 ,  H04N19/70

Abstract: A method includes performing a conversion between a video comprising a video unit and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that a first syntax element indicating whether an in-loop filtering operation is performed across tile boundaries is selectively included in the bitstream based on whether or how the video unit is partitioned into tiles.

公开(公告)号：US20220394244A1

公开(公告)日：2022-12-08

申请号：US17886104

申请日：2022-08-11

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

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

IPC: H04N19/105 ,  H04N19/70 ,  H04N19/52 ,  H04N19/174 ,  H04N19/139 ,  H04N19/573

Abstract: Methods, apparatus, systems for video processing, including video encoding or video decoding are described. One example method includes performing a conversion between a video including a video picture that includes a video slice and a bitstream of the video. The bitstream conforms to a format rule specifying that a slice type of the video slice determines a manner by which certain information from a picture header for the video picture is inherited by a slice header of the video slice.

公开(公告)号：US20220385898A1

公开(公告)日：2022-12-01

申请号：US17856631

申请日：2022-07-01

Applicant: Bytedance Inc.

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

IPC: H04N19/117 ,  H04N19/157 ,  H04N19/70 ,  H04N19/136 ,  H04N19/186 ,  H04N19/174 ,  H04N19/172

Abstract: A method of video processing comprises performing a conversion between a video unit of a video and a bitstream of the video according to a rule, wherein the rule specifies that whether a cross-component adaptive loop filter (CC-ALF) mode and an adaptive loop filter (ALF) mode are enabled for coding the video unit are indicated in the bitstream in a mutually independent manner.

公开(公告)号：US20220377361A1

公开(公告)日：2022-11-24

申请号：US17859733

申请日：2022-07-07

Applicant: Bytedance Inc.

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

IPC: H04N19/44 ,  H04N19/70

Abstract: Methods, devices and systems for video coding and encoding, which include constraints, restrictions and signaling for subpictures, slices, and tiles, are described. One example method of video processing includes performing a conversion between a video and a bitstream of the video, wherein the bitstream comprises one or more access units according to a format rule, and wherein the format rule specifies an order in which a first message and a second message that apply to an operation point (OP) are present within an access unit (AU) such that the first message precedes the second message in a decoding order.

公开(公告)号：US20220377353A1

公开(公告)日：2022-11-24

申请号：US17861728

申请日：2022-07-11

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

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

IPC: H04N19/186 ,  H04N19/176 ,  H04N19/159 ,  H04N19/132 ,  H04N19/70 ,  H04N19/167 ,  H04N19/169

Abstract: A method of video processing is provided that includes performing a conversion between a block of a video and a bitstream of the video. The bitstream conforms to a formatting rule specifying that a size of a merge estimation region (MER) is indicated in the bitstream and the size of the MER is based on a dimension of a video unit. The MER comprises a region used for deriving a motion candidate for the conversion.

公开(公告)号：US12301841B2

公开(公告)日：2025-05-13

申请号：US18516468

申请日：2023-11-21

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/184 ,  H04N19/169 ,  H04N19/172 ,  H04N19/182 ,  H04N19/30 ,  H04N19/597 ,  H04N19/70

Abstract: A method of video data processing includes performing a conversion between a video and a bitstream of the video. The bitstream comprises multiple layers comprising one or more subpictures according to a rule which specifies that, during a subpicture sub-bitstream extraction process by which an output bitstream is extracted from the bitstream, a supplemental enhancement information (SEI) network abstraction layer (NAL) unit that includes a scalable nested SEI message that is not applicable to the output bitstream is omitted in the output bitstream.

公开(公告)号：US20250150635A1

公开(公告)日：2025-05-08

申请号：US19016850

申请日：2025-01-10

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

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

Abstract: Methods, devices and systems for signalling 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, and wherein the format rule specifies that a first syntax element, which indicates whether a picture of the video can be partitioned, is conditionally included in a picture parameter set (PPS) of the bitstream based on values of a second syntax element, which indicates whether identifiers of subpictures are signalled in the PPS, and a third syntax element, which indicates, in the PPS, a number of the subpictures.

公开(公告)号：US12284347B2

公开(公告)日：2025-04-22

申请号：US18323149

申请日：2023-05-24

Applicant: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD. ,  Bytedance Inc.

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

IPC: H04N19/00 ,  H04N19/12 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/60 ,  H04N19/85

Abstract: A method for implementing an adaptive colour transform (ACT) mode during image/video encoding and decoding includes performing a conversion between a current video block of a video and a bitstream of the video, wherein the current video block is coded using the ACT mode, wherein the conversion includes applying an inverse ACT transform on the current video block according to a rule, and wherein the rule specifies that a clipping operation, based on a bit depth of the current video block, is applied to an input of the inverse ACT transform.