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

Marta Karczewicz

Yang Wang

Li Zhang

Jianle Chen

Ying Huang

Na Zhang

Bo Hu

Xi Wang

Cheng Feng

Yulei Liu

Tingyong Tang

Kui Fan

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

Siwei Ma

Ning Ma

Hao Tang

Lidong Qin

Yingge Li

Junru Li

Yu-Chen Sun

Yang Li

Lan Zou

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

Baisen He

Vadim Seregin

Hao Wu

Hui Zhang

Wei He

Amir Said

Vijayaraghavan Thirumalai

Cheng-Teh Hsieh

Qi Yu

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

Shiqing Fan

Yang Zhong

Yan Xiang

Jinbao Sheng

Chengdong Liu

Guangya Fan

Guangze Shen

Li Cui Xia

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

The present application relates to harmonization between different video process mode. A method for processing video includes: determining, during a conversion between a first block in a video data and a bitstream representation of the first block, one or more coded modes of one or more second blocks; determining, based on the one or more coded modes of the one or more second blocks, a coded mode constraint of the first block; and performing, at least by applying the coded mode constraint of the first block, the conversion; wherein the one or more second blocks comprise at least one of an adjacent block, a non-adjacent block, and a reference block of the first block.

Harmonization between different video process mode

A method of video processing is provided to comprise: performing a conversion between a current video block of a video and a bitstream representation of the video, wherein, during the conversion, a use of a geometric partitioning mode is allowed for the current video block, and wherein parameters of the geometric partitioning mode are computed using a set of angles including a first number of angles that is less than a first threshold value and/or a set of distances including a second number of distances that is less than a second threshold value.

Simplified inter prediction with geometric partitioning

An example method of video processing includes applying, in a conversion between a video comprising multiple components and a bitstream representation of the video, a deblocking filter to video blocks of the multiple components. A deblocking filter strength for the deblocking filter of each of the multiple components is determined according to a rule that specifies to use a different manner for determining the deblocking filter strength for the video blocks of each of the multiple components.

Using quantization groups in video coding

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 current video block of a video and a bitstream of the video, a cost based on at least two error metrics associated with two target blocks of the video, the cost indicting a degree of distortion between the two target blocks; refining coding data of the current video block based on the cost and the two target blocks; and performing the conversion based on the refined coding data. Compare with the conventional solution, the proposed method can advantageously improve the coding quality and the coding efficiency.

Method, device, and medium for video processing

Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: processing, during a conversion between a picture of a video and a bitstream of the video, a first video block in the picture based on a combination of decoder-side intra prediction mode derivation (DIMD) and multiple reference line (MRL), at least one intra prediction mode (IPM) being derived from the DIMD, and at least one non-adjacent reference line of reconstructed samples for the first video block being used in the combination of the DIMD and the MRL; and performing the conversion based on the first video block. Compared with the conventional solution, the proposed method can advantageously improve the coding effectiveness and coding efficiency.

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 a method of video processing, including performing a conversion between a video region of a video and a bitstream of the video according to a format rule. The format rule specifies that an applicability of a deblocking filter for the video region is determined based on syntax elements at i) a picture parameter set level and ii) a picture level or a slice level.

Deblocking signaling in video coding

Methods, systems, apparatus for video processing are described. The processing may include encoding, decoding or transcoding. One example video processing method includes performing a conversion between a video and a bitstream of the video according to a rule. The rule specifies that a syntax element is included in a profile, tier, level information syntax structure to indicate whether one or more general constraint information syntax elements are included in a general constraint information syntax structure and/or whether the general constraint information syntax structure is included in the profile, tier, level information syntax structure.

Signalling of general constraints flag

A method of visual media processing includes determining whether to use an affine adaptive motion vector resolution (AMVR) technique on visual media data relying on a control information related to the affine AMVR technique in a bitstream representation of the visual media data, wherein the control information is included or excluded from the bitstream representation based on a rule; and performing a conversion between the visual media data and the bitstream representation of the visual media data.

Syntax signaling in sub-block merge mode

An example method of video processing includes determining, for a conversion between a current picture of a video and a coded representation of the video, a position of a reference sample in a reference picture that is associated with the current picture based on a top-left position of a window of a picture. The picture includes at least the current picture or the reference picture, and the window is subject to a processing rule during the conversion. The method also includes performing the conversion based on the determining.

Deriving reference sample positions in video coding

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Kai Zhang