Block size restrictions for DMVR

H Liu, L Zhang, K Zhang, Y Wang - US Patent 11,363,290, 2022 - Google Patents
Methods of enabling and disabling a decoder-side motion vector refinement (DMVR) video
decoder and/or encoder are described. One example method includes determining a width …

MVD precision for affine

H Liu, L Zhang, K Zhang, Y Wang - US Patent 11,109,055, 2021 - Google Patents
Apparatus and methods for video processing are described. An exemplary method for video
processing comprises determining a motion vector difference (MVD) precision for a current …

Low-complexity design for FRUC

WJ Chien, HC Chuang, X Li, J Chen, L Zhang… - US Patent …, 2022 - Google Patents
(57) ABSTRACT A method of decoding video data includes constructing, by a video decoder
implemented in processing circuitry, a candidate list of motion vector information for a …

Prediction refinement for combined inter intra prediction mode

H Liu, L Zhang, K Zhang, J Xu, Y Wang - US Patent 11,558,634, 2023 - Google Patents
(57) ABSTRACT A method for processing a video includes performing a conversion
between a current block of visual media data and a corresponding coded representation of …

Inter prediction with refinement in video processing

H Liu, L Zhang, K Zhang, J Xu, Y Wang - US Patent 11,632,566, 2023 - Google Patents
2021-05-11 Assigned to BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD.
reassignment BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD. ASSIGNMENT …

Delta motion vector in prediction refinement with optical flow process

K Zhang, L Zhang, H Liu, Y Wang - US Patent 11,570,462, 2023 - Google Patents
(57) ABSTRACT A video processing method is disclosed to include: generating one or more
initial predictions for a sub-block of a current video block of the video; refining the one or …

Decoder side motion vector derivation

H Liu, L Zhang, K Zhang, J Xu, Y Wang - US Patent 11,553,201, 2023 - Google Patents
(57) ABSTRACT A method for processing a video includes performing a conversion
between a current block of visual media data and a corresponding coded representation of …

Gradient calculation in different motion vector refinements

K Zhang, L Zhang, H Liu, Y Wang - US Patent 11,356,697, 2022 - Google Patents
A video processing method is provided to include determining, for a current video block of a
video, a final prediction block for the current video block by refining one or more initial …

Bidirectional optical flow based video coding and decoding

H Liu, L Zhang, K Zhang, J Xu, Y Wang - US Patent 11,516,497, 2022 - Google Patents
Devices, systems and methods for sample refinement and filtering method for video coding
are described. In an exemplary aspect, a method for video processing includes modifying …

Applicability of prediction refinement with optical flow process

K Zhang, L Zhang, H Liu, Y Wang - US Patent 11,368,711, 2022 - Google Patents
A video processing method is disclosed to include: determining that a coding mode of a
current video block is an affine mode; determining, for the current video block, an …