Abstract: A method for video encoding comprises determining a mode of Local Illumination Compensation (LIC) for the video encoding to be enabled; calculating LIC parameters for the mode of LIC with a limited number of reference sample pairs, wherein a reference sample pair refers to a luma reference sample and a chroma reference sample; enabling the mode of LIC for the video encoding with the calculated LIC parameters to perform LIC for inter prediction to generate a prediction residual; and forming and outputting a bit-stream encoded with the prediction residual and prediction mode information indicating the mode of LIC.

Abstract: A method for video encoding, a method for video decoding, apparatuses and non-transitory computer-readable storage media thereof are provided. In the method for video decoding, the decoder may obtain one or more filtering parameters, wherein the one or more filtering parameters are from a filtering parameter set comprising a number of similar blocks, a search range, and a window size; obtain, based on the one or more filtering parameters, one or more similar pixels for a first pixel that has been filtered in a picture and the first pixel; and obtain an original pixel associated with the first pixel based on the one or more similar pixels.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video coding. In one method, a decoder obtains a first flag in a transform block (TB), a coding block (CB), a slice, a picture, or a sequence level, wherein the first flag indicates whether signaling of inherited intra mode is enabled on a current video block; and in response to determining that the inherited intra mode is enabled on the current video block based on the first flag, the decoder obtains a second flag that indicates whether the inherited intra mode is used at a signaled level.

Abstract: Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, the decoder obtains a plurality of motion vector candidates from a history-based motion vector prediction (HMVP) table, where the plurality of motion vector candidates include a first motion vector constructed candidate and a second motion vector constructed candidate, and the HMVP table stores translational motion information and non-translation motion information. Furthermore, the decoder obtains a virtual block based on the first motion vector constructed candidate and the second motion vector constructed candidate and obtains a plurality of control point motion vectors (CPMVs) for a current block based on a plurality of CPMVs of the virtual block.

Abstract: A method for video coding is provided. The method includes: setting, by an encoder, a first syntax element in a picture parameter set (PPS) specifying whether a picture corresponding to the PPS comprises more than one network abstraction layer (NAL) units and whether the more than one NAL units have a same NAL unit type; setting, by the encoder, a second syntax element in a picture header (PH) specifying whether the picture corresponding to the PH is an intra random access point (IRAP) picture or a gradual decoding refresh (GDR) picture, where a value of the second syntax element is set based on a value of the first syntax element; and forming, by the encoder, a bitstream with the first syntax element and the second syntax element.

Abstract: A method for decoding video data. The method comprises: obtaining, from a bitstream, a video block and filter shape information; determining a region to derive a multiple linear regression (MLR) model; obtaining luma and chroma sample values in the region; deriving the MLR model using the luma and chroma sample values in the region based on the filter shape information; predicting each of chroma samples in the video block by applying the MLR model to corresponding luma samples for that chroma sample based on the filter shape information; and obtaining decoded video block using the predicted chroma samples.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video coding and compression with high precision intra prediction technology. In one method, a decoder obtains a first control flag signaled at a specified level that comprises one of following levels: a Transform Block (TB) level, a Coding Block (CB) level, a slice level, a picture level, or a sequence level, where the first control flag indicates whether a Decoder-side High Precision Intra Mode Derivation (DHI) mode is enabled.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for decoding a video block in geometry partition mode (GPM). The method may include partitioning the video block into first and second geometric partitions. The method may include obtaining a first motion vector refinement (MVR) for the first geometric partition. The method may include obtaining a second MVR for the second geometric partition. The method may include obtaining a candidate list that comprises a plurality of motion vectors (MVs). The method may include obtaining a first MV from the candidate list for the first geometric partition. The method may include obtaining a second MV from the candidate list for the second geometric partition. The method may include calculating a third MV by adding the first MV with the first MVR for the first geometric partition. The method may include calculating a fourth MV. The method may include obtaining prediction samples.

Abstract: Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, the decoder obtains a first geometric partition mode (GPM) part and a second GPM part for a coding unit (CU). The decoder disables template matching (TM) based GPM split modes reordering for multiple GPM split modes that are applied to the CU in response to determining that the first GPM part or the second GPM part is predicted with intra prediction. Furthermore, the decoder enables the TM based GPM split modes reordering for the multiple GPM split modes in response to determining that both the first GPM part and the second GPM part are predicted with inter prediction.

Abstract: The present disclosure provides use of lysophosphatidic acid (LPA) as a feed additive in controlling porcine infectious diarrhea, and belongs to the technical field of feed nutrition. The LPA is a type of lipid substance that is produced endogenously in vivo and can reduce a large secretion level of intestinal fluid in piglets caused by Escherichia coli infection via inhibiting cystic fibrosis transmembrane-conductance regulator (CFTR)-dependent iodine efflux. In this way, a susceptibility of weaned piglets to the Escherichia coli is prevented to effectively maintain the intestinal health of piglets. LPA is an endogenous substance in vivo, and it is first discovered that adding the LPA into a feed can control Escherichia coli-caused infectious diarrhea in the piglets.

Abstract: Implementations of the disclosure provide a video processing apparatus and method for performing intra prediction on a video block. The video processing method may include receiving, by a processor, reference samples from a video frame of a video comprising the video block. The video processing method may further include determining, by the processor, a reference sample filter based on a size of each video block. The reference sample filter is among a plurality of reference sample filters each derived for a different video block size. The video processing method may also include applying, by the processor, the determined reference sample filter to the received reference samples. The video processing method may additionally include performing, by the processor, the intra prediction on the video block using the filtered reference samples.

Abstract: Methods for video coding and compression, apparatuses and non-transitory storage media are provided. In one method of video decoding, a decoder may obtain a syntax element that indicates a predefined geometric operation and an encoded video bitstream. Additionally, the decoder may reconstruct a modified picture based on the encoded video bitstream. Furthermore, the decoder may obtain an original picture by performing an inverse geometry operation based on the syntax element. Further, the decoder may obtain luma samples and chroma samples of the original picture.

Abstract: Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, the decoder obtains a plurality of sub-blocks by dividing an affine-coded block. Moreover, the decoder obtains, based on a plurality of control point motion vectors (CPMVs) of the affine-coded block, a plurality of sub-CPMVs of one sub-block from the plurality of sub-blocks, where the one sub-block has a size of a minimum affine block. Furthermore, the decoder stores the plurality of sub-CPMVs of the one sub-block as motion information of the one sub-block.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage media are provided for video coding. In one method, a decoder derives a first and a second reference pictures for a current coding block; the decoder derives a first and a second predictor samples based on a motion vector associated with the first reference picture using a motion compensation process from the first reference picture; the decoder determines whether the first and the second predictor samples are out-of-boundary (OOB), and in response to determining the first or the second predictor sample is OOB, the decoder replaces the first or the second predictor sample that is OOB with a first or a second alternative predictor sample; and the decoder generates the final prediction sample by averaging sample values of the first predictor sample and the second predictor sample.

Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video coding. In one method, a decoder obtains a first flag that indicates whether a template-based intra mode derivation (TIMD) mode is applied to a current video block; and in response to determining that the TIMD mode is applied to the current video block based on the first flag, the decoder obtains a set of candidate list for the TIMD mode, where the set of candidate list includes a set of reference line list or a set of template candidate list.

Abstract: Methods, devices, and storage mediums are provided for encoding video signals. An encoder determines at least one versatile video coding (VVC) syntax flag. The encoder determines, in response to a syntax element indicating that inter prediction is allowed, inter related syntax elements. The encoder obtains a first reference picture I(0) and a second reference picture I(1) associated with a video block. The encoder obtains first prediction samples I(0)(i,j) of the video block from a reference block in the first reference picture I(0). The encoder obtains second prediction samples I(1)(i,j) of the video block from a reference block in the second reference picture I(1). The encoder obtains bi-prediction samples based on the at least one VVC syntax flag, the inter related syntax elements, the first prediction samples I(0)(i,j), and the second prediction samples I(1)(i,j).

Abstract: Methods, apparatuses and non-transitory storage media are provided for video coding. In a method for intra prediction in video decoding, a decoder derives a first subset of predictors of a current video block by a first prediction process, and the decoder obtains a second subset of predictors by a second prediction process using neighboring reconstructed samples and the first subset of predictors.

Abstract: Implementations of the disclosure provide video processing apparatuses and methods for inter-prediction. A video processing method for the inter-prediction performed by a video decoder includes determining a reference index for a video block in a video frame of a video from a bitstream. The video processing method also includes generating a joint list including a plurality pairs of reference pictures based on a first reference list and a second reference list for the video block. The video processing method further includes reordering the plurality pairs of reference pictures in the joint list based on bilateral matching using one or more motion vectors of the video block to generate a reordered joint list. The video processing method further includes performing the inter-prediction on the video block based on the reordered joint list and the reference index.

Abstract: Methods and apparatuses for video coding are provided. The method includes that a decoder determines whether one or more reference picture lists are signaled in a picture header (PH) associated with a picture and whether the one or more reference picture lists indicate that one or more slices associated with the picture are bi-predictive. The method further includes that the decoder adds one or more constraints to one or more syntax elements in the PH in response to determining that the one or more reference picture lists are signaled in the PH and the one or more reference picture lists indicate that the one or more slices are not bi-predictive.