公开(公告)号：US20240205415A1

公开(公告)日：2024-06-20

申请号：US18435980

申请日：2024-02-07

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

Inventor： Yan HUANG ,  Jizheng XU ,  Li ZHANG ,  Li SONG

IPC: H04N19/146 ,  H04N19/176

CPC classification number: H04N19/146 ,  H04N19/176

Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a target video block of a video and a bitstream of the video, an adjusted coding process for the target video block based at least in part on a budget of coding time for at least one further video block and an actual coding time for the at least one further video block, the at least one further video block being coded before the conversion, the coding time representing a time duration during which the at least one further video block being coded, the budget of coding time representing a time duration being pre-allocated for encoding the at least one further video block; and performing the conversion by using the adjusted coding process.

公开(公告)号：US20230370644A1

公开(公告)日：2023-11-16

申请号：US18360608

申请日：2023-07-27

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

Inventor： Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Zhipin DENG ,  Jizheng XU ,  Yue WANG

IPC: H04N19/70 ,  H04N19/159 ,  H04N19/174 ,  H04N19/169 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/70 ,  H04N19/159 ,  H04N19/174 ,  H04N19/188 ,  H04N19/176 ,  H04N19/46

Abstract: An example method of video processing includes performing a conversion between a video including a video picture including one or more video units and a bitstream representation of the video. The bitstream representation conforms to a format rule that specifies that a first syntax element is included in a header of the video picture indicating allowed prediction types of at least some of the one or more video units in the video picture.

公开(公告)号：US20220279178A1

公开(公告)日：2022-09-01

申请号：US17748687

申请日：2022-05-19

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

Inventor： Li ZHANG ,  Kai ZHANG ,  Hongbin LIU ,  Jizheng XU ,  Yue WANG

IPC: H04N19/117 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/31 ,  H04N19/70 ,  H04N19/82

Abstract: Devices, systems and methods for digital video coding, which includes in-loop reshaping for video coding, are described. An exemplary method for video processing includes performing a conversion between a video comprising one or more video data units and a bitstream representation of the video, the bitstream representation conforming to a format rule that specifies an inclusion of side information indicative of default parameters for a coding mode that is applicable to a video block of the one or more video data units for which the coding mode is enabled, and the side information providing parameters for constructing the video block based on a representation of the video block in an original domain and a reshaped domain and/or a luma-dependent scaling of a chroma residue of a chroma video block.

公开(公告)号：US20220264124A1

公开(公告)日：2022-08-18

申请号：US17731472

申请日：2022-04-28

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

Inventor： Zhipin DENG ,  Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Jizheng XU

IPC: H04N19/186 ,  H04N19/124 ,  H04N19/593 ,  H04N19/157 ,  H04N19/176 ,  H04N19/61 ,  H04N19/70 ,  H04N19/136 ,  H04N19/11

Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes generating, for a conversion between a current video block of a video including multiple video blocks and a bitstream representation of the video, a most probable mode (MPM) list for a matrix based intra prediction (MIP) tool based on a rule, where, the MIP tool includes determining, during the conversion, a prediction block of the current video block by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation, and where the rule specifies a mapping between a number of MIP modes and dimensions of the multiple video blocks; and performing the conversion based on the generating.

公开(公告)号：US20220248009A1

公开(公告)日：2022-08-04

申请号：US17700155

申请日：2022-03-21

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

Inventor： Jizheng XU ,  Zhipin DENG ,  Li ZHANG ,  Hongbin LIU ,  Kai ZHANG

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/132 ,  H04N19/186 ,  H04N19/176

Abstract: A method of video processing is described. The method includes performing a conversion between a chroma block of a video region of a video picture of a video and a coded representation of the video according to a rule; wherein the rule specifies that, due to the chroma block having a size M×N, the chroma block is disallowed to be represented in the coded representation using an intra coding mode, wherein M and N are integers that indicate a width and a height of the chroma block respectively, and wherein the intra coding mode includes coding the chroma block based on a previously coded video region of the video picture.

公开(公告)号：US20220217328A1

公开(公告)日：2022-07-07

申请号：US17699014

申请日：2022-03-18

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

Inventor： Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Zhipin DENG ,  Jizheng XU ,  Yue WANG

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/30 ,  H04N19/159 ,  H04N19/176

Abstract: An example method of video processing includes determining, for a conversion between a current picture of a video and a bitstream of the video, a scaling ratio based on a first window in the current picture and a second window in a reference picture associated with the current picture; resampling the reference picture by using the determined scaling ratio; and performing the conversion based on the result of the resampling, wherein a dimension of the first window is W×H and a dimension of the second window is W′×H′, where W, H, W′ and H′ are integers, and wherein W, H, W′ and H′ satisfy a constraint.

公开(公告)号：US20220210437A1

公开(公告)日：2022-06-30

申请号：US17684630

申请日：2022-03-02

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

Inventor： Jizheng XU ,  Zhipin DENG ,  Li ZHANG ,  Hongbin LIU ,  Kai ZHANG

IPC: H04N19/157 ,  H04N19/174 ,  H04N19/186 ,  H04N19/176 ,  H04N9/64 ,  H04N19/169 ,  H04N19/119 ,  H04N19/46 ,  H04N19/503

Abstract: A method of video processing is described. The method includes determining, for a conversion between a video region of a video and a coded representation of the video, an intra coding characteristic of the video region based on a color format of the video according to a rule; and performing the conversion according to the intra coding characteristic.

公开(公告)号：US20220210433A1

公开(公告)日：2022-06-30

申请号：US17694008

申请日：2022-03-14

Applicant: Bytedance Inc.

Inventor： Weijia ZHU ,  Li ZHANG ,  Jizheng XU

IPC: H04N19/14 ,  H04N19/117 ,  H04N19/176 ,  H04N19/196 ,  H04N19/86

Abstract: An example method of video processing includes performing a conversion between a block of a chroma component of a video and a bitstream representation of the video. During the conversion, a deblocking filter process is applied to at least some samples along an edge of the block, and wherein chroma quantization parameter (QP) offsets are added to outputs from a chroma QP table to determine parameters for the deblocking filter process.

公开(公告)号：US20220201314A1

公开(公告)日：2022-06-23

申请号：US17691867

申请日：2022-03-10

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

Inventor： Yang WANG ,  Hongbin LIU ,  Li ZHANG ,  Kai ZHANG ,  Jizheng XU ,  Yue WANG

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/186 ,  H04N19/176 ,  H04N19/46

Abstract: A method of video processing is described. The method includes: making a first determination about whether a collocated video block of a video block of a video is coded using an inter coding mode or a non-inter coding mode; making a second determination, based on the first determination, about availability of motion vectors of the collocated video block or a mode of derivation of motion vectors for the collocated video block; and performing a conversion between the video block and a coded representation of the video based on the second determination.

公开(公告)号：US20220201300A1

公开(公告)日：2022-06-23

申请号：US17692929

申请日：2022-03-11

Applicant: Bytedance Inc.

Inventor： Li ZHANG ,  Weijia ZHU ,  Jizheng XU

IPC: H04N19/119 ,  H04N19/169 ,  H04N19/176 ,  H04N19/186

Abstract: In one example aspect, a method of video processing includes performing a conversion between a current block in video unit of a video and a bitstream of the video using a palette mode in which a palette of representative sample values is used for coding the current block. During the conversion, a predictor palette is used for predicting the palette of representative sample values, and wherein a size of the predictor palette is adaptively adjusted according to a rule.