Bytedance Inc.

Beijing Bytedance Network Technology Co., Ltd.

Qualcomm Incorporated

International Business Machines Corporation

Lemon Inc.

Other

Boehringer Ingelheim International Gmbh

Tsinghua University

Nokia Technologies Oy

Nuctech Company Limited

Globalfoundries Inc.

Omron Corporation

Daimlerchrysler Corporation

Boehringer Ingelheim Pharmaceuticals, Inc.

Johnson & Johnson Consumer Companies, Inc.

Li Feng Zhang

Kai Zhang

Hongbin Liu

Yue Wang

Jizheng Xu

Zhipin Deng

Marta Karczewicz

Ye-Kui Wang

Ying Hai Chen

Weijia Zhu

Wei-Jung Chien

Jianle Chen

Yang Wang

Xin Zhao

Xiang Yang Li

Zhen Liu

Parijat Dube

Yi-Wen Chen

Vadim Seregin

Yuwen He

Wei Zhang

Joel Sole Rojals

Yu-Chen Sun

Min Li

Scott M Carlson

Vijayaraghavan Thirumalai

Siwei Ma

Amir Said

Rajan Laxman Joshi

Hari Sankar

Chris Hugh Senanayake

Andrzej P Kochut

Alexei A Karve

Liangzhao Zeng

Zhiqiang Chen

Lars Dalsgaard

Frank Himmelsbach

Matthias Eckhardt

Wei Tan

Krishnakanth Rapaka

Laura Wynter

Meng Wang

Nan Hu

Michael H Dawson

Alexei Yurievitch Gorokhov

Lei Zhang

Yang Liu

Yuanjing Li

Adarsh Krishnan Ramasubramonian

Xiang Li

Ting Wang

Inyup Kang

John Alan Bivens

Ronald Morton Smith, Sr

David Arlen Elko

Liana Liyow Fong

Anton Viktorovich Riabov

Haitao Zhang

Gilbert Christopher Sih

Minsik Cho

Curtis E Hrischuk

Jie Chen

Ulrich Alfons Finkler

Joseph Binamira Soriaga

Valentina Salapura

Jing Jiang

Jonathan D Bradbury

Jun Wang

Xianglin Wang

Maja Vukovic

Ziran Zhao

Ashish Kundu

Qian Wang

Geert Van Der Auwera

Yue Li

Brian Clarke Banister

Yunfei Zheng

Yinong Liu

Douglas Morgan Freimuth

Tero Henttonen

Hartwig Adam

Ravi Nair

Jinho Hwang

Wei Yang

Bo Li

Clea Anne Zolotow

Bohuslav Rychlik

Vasileios Pappas

Jianmin Li

Michael Lee McCloud

Elena Virtej

Jeffrey Owen Kephart

Tedrick Neal Northway

Wei Pu

Wanlong Wu

Minkyong Kim

Randy Scott Johnson

Cheng-Teh Hsieh

Yan Huang

Devices, systems and methods for digital video coding, which includes Prediction from Multiple Cross-components (PMC) methods, are described. An exemplary method for video processing includes making a first determination that a cross-component prediction (CCP) mode is disabled for a conversion between a video block of a video and a bitstream representation of the video and making a second determination, based on the first determination, regarding whether a first syntax element indicating usage of an enhanced Two-Step Cross-component Prediction Mode (TSCPM) coding tool or an enhanced cross-component linear model (CCLM) coding tool is included in the bitstream representation. The method also includes performing a conversion based on the second determination.

Cross-component prediction using multiple components

A method for processing video data is disclosed. The method includes determining a width (w) and a height (h) of a coding group based on a width (W) and a height (H) of a block that is non-dyadic and contains residual, processing the residual of the block in unit of the coding group, and performing a conversion between a visual media data and a bitstream according to a rule based on the processing.

Residual coding on non-dyadic blocks

Methods, systems and devices for sample string processing in intra coding are described. An example method of video processing includes determining, for a conversion between a video comprising a current block and a bitstream of the video, whether a first sample string of the current block forms a rectangle, and performing, based on the determining, the conversion, wherein the determining is based on a position and a length of the first sample string.

Sample string processing in intra coding

A mechanism for processing video data implemented by a video coding apparatus is disclosed. The mechanism determines usage of one or more of a separate tree coding and a partitioning beyond a minimum size threshold for a video unit. The mechanism also disables a cross-component coding tool for the video unit based on the determination. A conversion between a visual media data and a bitstream is performed in accordance with the coding tool being disabled.

Separate tree coding restrictions

A method for video processing includes: determining, that the video block is split into a plurality of sub-blocks based on a condition associated with the video block, refining motion information of each sub-block using a motion refinement process, the motion refinement process being a one-step or an iterative multi-step refinement process; and performing a video processing on the video block based on the refined motion information of each sub-block.

Sub-block based prediction

Methods, systems, and devices for implementing an adaptive color transform (ACT) during image/video encoding and decoding, including: determining, for a conversion between a video including a block and a bitstream of the video, that a size of the block is greater than a maximum allowed size for an ACT mode, and performing, based on the determining, the conversion. In response to the size of the block being greater than the maximum allowed size for the ACT mode, the block is partitioned into multiple sub-blocks. Each of the multiple sub-blocks share a same prediction mode, and the ACT mode is enabled at a sub-block level.

Use of offsets with adaptive colour transform coding tool

Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video unit of a current picture of a video and a bitstream of the video according to a rule. The rule specifies that, for a given picture to be available as a reference picture whose motion information is used for the conversion, the given picture has a same coding tree unit size or a same coding tree block size as the current picture.

Inter layer prediction with different coding block size

Methods and an apparatus for video processing are described. One example method includes determining, for a conversion between a video block of a video and a bitstream of the video, that the video block satisfies a condition. The video block is coded in the bitstream using an intra block copy mode. The method further includes performing the conversion based on the determining. Here, due to the video block satisfying the condition, a portion of an intra block copy buffer is reset during the conversion.

Intra block copy buffer and palette predictor update

An example device for filtering a decoded block of video data includes one or more processing units configured to construct a plurality of filters for classes of blocks of a current picture of video data. To construct the plurality of filters for each of the classes, the processing units are configured to determine a value of a flag that indicates whether a fixed filter is used to predict a set of filter coefficients of the class, and in response to the fixed filter being used to predict the set of filter coefficients, determine an index value into a set of fixed filters and predict the set of filter coefficients of the class using a fixed filter of the set of fixed filters identified by the index value.

Predicting filter coefficients from fixed filters for video coding

Systems, methods, apparatus for video processing are described. A video processing method includes determining, for a conversion between a current block of a video and a bitstream of the video, whether or which a partitioning scheme is enabled for coding of the current block according to a rule, and performing the conversion based on the determining. The rule is based on one or more neighboring blocks of the current block.

Neighbor based partitioning constraints

Various aspects of the present disclosure generally relate to wireless communication. Some aspects more specifically provide procedures and configurations used to perform, at a transmitter, probabilistic amplitude shaping (PAS) of quadrature amplitude modulation (QAM) communications using non-binary polar coding (NBPC). NBPC differs from binary polar coding (BPC) in that BPC uses a binary-input channel whereas NBPC uses a non-binary input channel. For example, while BPC uses a log likelihood ratio (LLR) with a single value corresponding to a given bit to be shaped, NBPC may use a probability mass function (PMF) to define or represent amplitude shaping target values. As another example, aspects use non-binary transformations, which reduce the number of passes to shape q bits from q passes (for BPC) to 1 pass (for NBPC).

Non-binary polar codes for probabilistic amplitude shaping

A video processing method is described. The method includes determining, for a conversion between a video unit of a video and a coded representation of the video, a maximum number of entries of a palette of representative values used during the conversion according to a rule; and performing the conversion using the palette, and wherein the rule specifies the maximum number of entries according to a characteristic of the video unit.

Palette mode with intra block copy prediction

Systems, methods, and an apparatus for video processing are described. A video processing method includes determining an application of a partitioning scheme to a video block positioned at a boundary of a video unit based on a rule, and performing a conversion between a visual media data and a bitstream based on the application of the partitioning scheme to the video block.

Boundary handling for coding tree split

Devices, systems and methods for digital video coding, which includes deriving RMVF-based motion vector information, are described. An exemplary method for video processing includes deriving at least one motion model for a current video block, based on motion information of at least one non-adjacent spatial neighboring block or at least one temporal neighboring block of the current video block; deriving motion information for the current video block or at least one sub-block of the current video block based on the at least one motion model; and performing a conversion for the current video block based on the derived motion information.

Regression-based motion vector field based sub-block motion vector derivation

A method of video processing includes determining, for a conversion between a current block of a video and a bitstream of the video, that the current block is split into multiple sub-blocks, wherein at least one of the multiple blocks is coded using a modified intra-block copy (IBC) coding technique that uses reference samples from one or more video regions from a current picture of the current block; and performing the conversion based on the determining.

Sub-block based intra block copy

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Li Feng Zhang