Bytedance Inc.

Beijing Bytedance Network Technology Co., Ltd.

Qualcomm Incorporated

Tencent Technology (shenzhen) Company Limited

Lemon Inc.

Other

Huawei Technologies Co., Limited

Nanjing Tech University

Hon Hai Precision Industry Co., Ltd.

Hong-fu Jin Precision Industry (shenzhen) Co., Ltd.

Byd Company Limited

Huawei Device Co., Ltd.

The Methodist Hospital

Nanjing Hydraulic Research Institute

Biotyx Medical (shenzhen) Co. Ltd.

Kai Zhang

Li Feng Zhang

Hongbin Liu

Yue Wang

Jizheng Xu

Zhipin Deng

Ye-Kui Wang

Weijia Zhu

Li Zhang

Marta Karczewicz

Yang Wang

Jianle Chen

Na Zhang

Ying Huang

Bo Hu

Xi Wang

Cheng Feng

Yulei Liu

Kui Fan

Tingyong Tang

Wei-Jung Chien

Huijiao Yang

Ruiyi Zhou

Wei Li

Zhipei Wang

Bosen He

Saeed Nikayin

Gilbert Loera

Xin Qing

Zhengkai Xie

Xiang Yang Li

Yue Li

Yuwen He

Hsiao Chiang Chuang

Sha Mo

Sirui Liu

Xin Zhao

Yi-Wen Chen

Hsiao-Chiang Chuang

Andrew Hyungwoo Choi

Renfang Liu

Lei Guan

Ning Ma

Hao Tang

Lidong Qin

Yingge Li

Junru Li

Yu-Chen Sun

Xiang Li

Done Bugdayci Sansli

Pingkai Ouyang

Shiqi Wang

Jiahao Li

Kai Guo

Ke Wang

Zheng Fang

Tianliang Fu

Michael Niesman

Dong Bo Zhao

Lei Zheng

Yu Han

Ning Zhu

Danzhi Chen

Meng Wang

Vadim Seregin

Hao Wu

Siwei Ma

Yang Li

Lan Zou

Hui Zhang

Wei He

Amir Said

Qi Yu

Vijayaraghavan Thirumalai

Cheng-Teh Hsieh

Ping Chen

Jun Huang

Haitao Xia

Sungwon Lee

Ping Song

Wenjiao Lin

Shaochun Zhuang

Zhenan Guan

Ge Chen

Fengxin Wang

Shudong Ruan

Junjie Tao

Zhuo Li

Huiquan Liu

Wenbin Yin

Shiqing Fan

Yang Zhong

Yan Xiang

Jinbao Sheng

Chengdong Liu

Guangya Fan

Video coding and decoding techniques, including history-based motion vector prediction with default parameters, are described. One example video processing method includes resetting, for a conversion between a video unit of a video and a bitstream of the video, a history-based motion vector prediction (HMVP) table of size N by adding K HMVP motion candidates to the HMVP table, where the K HMVP motion candidates have default values, where N and K are positive integers, and where K≤N; and performing the conversion between the video unit and the bitstream using the HMVP table resulting from the resetting.

History-based motion vector prediction with default parameters

Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: applying, during a conversion between a target block of a video and a bitstream of the target block, a processing procedure to at least one motion candidate in a motion candidate list; reordering the motion candidate list by applying a first reordering process to the motion candidate list after the processing procedure; and performing the conversion based on the reordered motion candidate list.

Method, apparatus, and medium for video processing

A method of video processing includes determining, based on a video characteristic of a first video block, an enabling or disabling of a pruning process for a table updating process; updating one or multiple tables, based on the determination and motion information of the first video block, the one or multiple motion tables being History-based Motion Vector Prediction (HMVP) tables; and performing a conversion between a subsequent video block of the video and bitstream representation of the subsequent video block based on the updated tables.

Pruning method in different prediction mode

A video processing method is provided, including: performing a conversion between a coded representation of a video including one or more video regions and the video, wherein the coded representation includes reshaping model information applicable for in-loop reshaping (ILR) of some of the one or more video regions, wherein the reshaping model information provides information for a reconstruction of a video unit of a video region based on a representation in a first domain and a second domain and/or scaling chroma residue of a chroma video unit, wherein the reshaping model information includes a parameter set that includes a first syntax element that derives a number of bits used to represent a second syntax element specifying an absolute delta codeword value from a corresponding bin, and wherein the first syntax element has a value smaller than a threshold.

Signaling of reshaping information in video processing

Methods, systems, and devices for coding or decoding video wherein the picture partition mode is based on block size are described. An example method for video processing includes using a dimension of a virtual pipeline data unit (VPDU) used for a conversion between a video comprising one or more video regions comprising one or more video blocks and a bitstream representation of the video to perform a determination of whether a ternary-tree (TT) or a binary tree (BT) partitioning of a video block of the one or more video blocks is enabled, and performing, based on the determination, the conversion, wherein the dimension is equal to VSize in luma samples, wherein dimensions of the video block are CtbSizeY in luma samples, wherein VSize=min(M, CtbSizeY), and wherein M is a positive integer.

Block size dependent use of video coding mode

A mechanism for processing video data is disclosed. A conversion is performed between a visual media data including a video unit and a bitstream. The conversion can be performed by a video encoder and/or a video decoder. The video unit is reconstructed, and a guided filter is applied to reconstructed samples in the video unit.

Guided filter in video coding

Example implementations include a method, apparatus and computer-readable medium of video coding, comprising receiving the code block and one or more neighbor samples and determining the value of beta based on at least one of an average chroma value, a midrange chroma value, a median chroma value, an average luma value, a midrange luma value, or a median luma value of two or more neighbor samples.

Methods and apparatuses for cross-component prediction

Methods, apparatus, systems for video processing, including video encoding or video decoding are described. One example method includes performing a conversion between a video comprising a video picture that includes a video slice and a bitstream of the video. The bitstream conforms to a format rule specifying that, in case a slice type of the video slice is type P and temporal motion vector prediction is enabled, usage of reference picture resampling (RPR) for a reference picture in a collocated reference picture list is disabled. The reference picture is indicated by a reference index of a collocated picture of the video slice used for the temporal motion vector prediction.

Reference picture resampling activation in video coding

An exemplary method for visual media processing includes performing a conversion between a current video block of a visual media data and a bitstream representation of the visual media data in accordance with a conditional signaling rule. The current video block is disabled from using an intra sub-block partitioning (ISP) split mode which divides the current video block into sub-blocks depending on dimensions of the current video block. In case that the conversion is associated with disabling use of the ISP split mode, the conditional signaling rule specifies selectively including in the bitstream representation a first syntax element indicating that a luma component of a sub-block of the current video block includes non-zero coefficient values. The selectively including is based at least on one or more other syntax elements having non-zero coefficient values of one or more previous sub-blocks included in the bitstream representation.

Significant coefficient signaling in video coding

A mechanism for processing video data is disclosed. Video decoder initialization information is signaled between an encoder to a decoder. The video decoder initialization information contains a range of initialization parameters. A conversion is performed between a visual media data and a visual media data file based on the range of initialization parameters.

Video decoder initialization information

A method for visual media processing is disclosed. The method includes determining whether a pair of adjacent blocks of visual media data are both intra block copy (IBC) coded and selectively applying, based on the determination, a deblocking filter (DB) process by identifying a boundary at a vertical edge and/or a horizontal edge of the pair of adjacent blocks. The method further includes calculating a boundary strength of a filter, deciding whether to turn on or off the filter, and selecting a strength of the filter in case the filter is turned on. The boundary strength of the filter is dependent on a motion vector difference between motion vectors associated with the pair of adjacent blocks.

Boundary strength determination for deblocking filters in video processing

A method of processing video data is described. The method includes performing a conversion between a current video block of a video and a bitstream of the video. A geometric partitioning mode index for the current video block is coded in the bitstream and a binarization of the geometric partitioning mode index is performed according to a rule. The geometric partitioning mode index specifies a geometric splitting shape of a geometric partitioning mode applied to the current video block. The rule specifies that the geometric partitioning mode index is coded with a fixed-length binarization.

High level syntax for inter prediction with geometric partitioning

A method of digital media processing includes performing a conversion between a media segment and a bitstream of the media segment. The conversion conforming to a format rule and an encryption rule. The format rule specifying that verification information, which includes an indication of an integrity of a portion of the media segment, is signaled in the bitstream.

Indication of digital medial integrity

Techniques for implementing video processing techniques are described. In one example implementation, a method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, whether a combined inter and intra prediction (CIIP) coding technique is to be applied to the current block based on a characteristic of the current block. The CIIP coding technique uses an intermedia inter prediction value and an intermedia intra prediction value to derive a final prediction value of the current block. The method also includes performing the conversion based on the determining.

Using combined inter intra prediction in video processing

A method of video processing includes determining, for a conversion of a block of a video picture in a video and a bitstream representation of the video, gradients of a subset of samples in a region for a classification operation in a filtering process. The region has a dimension of M×N and the block has a dimension of K×L, M, N, K, L being positive integers. The block is located within the region. The method also includes performing the conversion based on the determining.

Classification in adaptive loop filtering

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Kai Zhang