Beijing Bytedance Network Technology Co., Ltd.

Bytedance Inc.

Intel Corporation

Lemon Inc.

Tahoe Research, Ltd.

Beijing Inc.

Zhipin Deng

Li Feng Zhang

Kai Zhang

Hongbin Liu

Jizheng Xu

Ye-Kui Wang

Yue Wang

Lidong Xu

Yi-Jen Chiu

Xiaoxia Cai

Wenhao Zhang

Yang Wang

Yu Han

Kui Fan

Na Zhang

Hong Jiang

Chen Wang

Ya-Ti Peng

Ke Chen

Pieter Kapsenberg

Iole Moccagatta

Li Zhang

Weijia Zhu

Jill MacDonald Boyce

Hiu-Fai R Chan

Hsiao Chiang Chuang

A mechanism and method for processing video data is disclosed. The video processing method includes determining whether to enable a second partitioning scheme for coding of a current video unit according to a rule. The method includes performing a conversion between a video media data and a bitstream based on the rule.

Duplicate partitioning prevention

A mechanism for processing video data implemented by a video coding apparatus is disclosed. The mechanism determines to apply template-based intra mode derivation (TIMD) to a block based on whether the block is dyadic or non-dyadic, where TMID is associated with intra prediction. A conversion between a visual media data and a bitstream is performed by applying intra prediction to the block based on TIMD.

Intra-prediction on non-dyadic blocks

Video processing, including video coding, video decoding and video transcoding, is described. One example method includes performing a conversion between a video comprising a video picture and a bitstream of a video according to a rule, where the rule specifies that syntax elements indicate a first width and a first height of a scaling window for the video picture, and where the rule specifies that a range of permissible values for the syntax elements include values greater than or equal to two times a second width of the video picture and two times a second height of the video picture.

Scaling window in video coding

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

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

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

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

Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a block of a video and a bitstream of the video according to a rule. The rule specifies that whether a syntax flag indicating whether transform skip residual coding is enabled at a video unit level is present in the bitstream is based on values of a first syntax element indicating usage of sign data hiding in the video unit and a second syntax element indicating usage of dependent quantization in the video unit.

Transform skip residual coding

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

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

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 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 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

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.

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