Abstract: A video encoder or decoder processes portions of video with less delay when its processes are parallelized and avoids delays caused by dependence on the completion of prior processes. In one embodiment, a motion vector predictor from a neighboring block of video is used in a subsequent later block of video before it is finished being refined for use in the neighboring block. In another embodiment, information from a neighboring block is confined to include blocks in the same coding tree unit. In another embodiment, a motion vector predictor is checked to see whether it is already in a list of candidates before adding it to the list to expedite the process.

Abstract: Some series of ABT split are normatively forbidden in order to limit the number of allowed series of splits, in a way that refines the trade-offs between the amount of allowed split series and the compression efficiency. In particular, a reduced combinatory in terms of allowed split series leads to reduced encoder-side complexity, in the rate distortion search for the best block partitioning. The normative split restrictions provide that when successively using horizontal or vertical then vertical or horizontal asymmetric splits, the considered succession of two splits leads to isolating the sub-area of the input block that is three-fourths the size of the parent block in width and height. Additional embodiments condition allowed splits on transform size, block size, and temporal layer of the slice and slice type.

Abstract: A video coding system may use different types of templates when using template-based prediction modes such as intra template matching prediction mode. The ‘L-shape’ template conventionally used by template-based coding tools may be split into a horizontal ‘above’ (or ‘upper’) template and a vertical ‘left’ template. This allows the encoder to select the appropriate part of the template that better captures statistical properties of the current block and results into improving the coding performance. The use of the type of template is signaled in the encoded data so that the decoder can use the appropriate template for the reconstruction when using a template-based prediction mode such as intra template matching prediction mode.

Abstract: Systems, methods, and instrumentalities are disclosed for performing motion compensation with long-term history-based motion vector predictor candidate(s). A device configured for performing such motion compensation may include a processor. The processor may be configured to obtain a long-term motion vector predictor candidate. The processor may also be configured to add the long-term motion vector predictor candidate to a history-based motion vector prediction (HMVP) list for a current block. The processor may also be configured to decode the current block using the HMVP list having the long-term motion vector prediction candidate.

Abstract: A video codec can involve encoding and decoding picture information and first and second flags, wherein the encoding or decoding of the picture information is based on a coding mode indicated by the first flag or the second flag, and the first flag indicates a subblock merge mode and the second flag indicates an inter affine prediction mode, and the encoding or decoding of the first flag uses Context-Based Arithmetic Coding (CABAC) based on a first probability model and encoding or decoding of the second flag uses CABAC based on a second probability model.

Abstract: The invention relates to the field of materials based on mineral fibers, in particular mineral wool such as glass wool or rock wool. More specifically, the present invention relates to a method and a device for recycling the water recovered in a fiberizing and shaping method when using a specific acid binder based on monomeric polycarboxylic acid, or a salt of such an acid.

Abstract: A method of predicting or inferring a piece of information for encoding or decoding uses a predictor from a spatial neighbor, or from a reference picture, instead of predicting or inferring the information, such as a flag for a current block, from a motion predictor block. This procedure can be used in several ways, or used in various motion vector prediction modes, such as Frame Rate Up Conversion or various variations of Advanced Motion Prediction. Other embodiments provide other methods and combinations to derive or infer motion information to increase coding efficiency.

Abstract: Systems, methods, and instrumentalities are disclosed for performing intra prediction of a luminance coding block and/or a chrominance coding block and related signaling when neural network-based intra prediction is enabled. For a current coding block, information representative of a neural network-based prediction mode and a block context may be obtained. A neural network-based predictor may be generated for the current coding block based on the block context and the neural network-based prediction mode. A non-neural network-based intra prediction mode that corresponds to the generated neural network-based predictor may be determined. A prediction mode for a neighboring block may be determined based on the non-neural network-based intra prediction mode.

Abstract: Embodiments disclosed herein generally relate to methods and apparatuses for video coding. For example, methods and apparatuses using decoder-side motion vector refinement (DMVR) technique with bi-prediction weighting for video coding are provided. In an example, a method for video coding includes determining a mode with an illumination change, determining that at least one coding tool for a block is enabled, and performing a DMVR process based on the mode with the illumination change and the at least one coding tool for the block being enabled.

Abstract: Prediction of a boundary used in geometric prediction modes is accomplished with embodiments that remove a requirement of reconstruction of samples of the current block, which increases pipeline latency. In one embodiment, the best boundary is predicted and added as a candidate to a list. In another embodiment, the candidates are ranked according to their boundary fitting score and an index is signaled to select the correct candidate at a corresponding decoder. In another embodiment, the fitting of the boundary is computed using a metric along the boundary sub-block. In another embodiment, the fitting of the boundary is computed using a metric outside the boundary area.

Abstract: In a video coding system, it is proposed to improve the intra prediction based on intra-block copy by allowing a decoder-side refinement allowing further refinement of the block vector obtained from IBC using a template matching process. In this template matching, the decoder searches in an iterative process the best match for the current block (L-shaped) template within the reconstructed area, adjacent to the block vector determined using the IBC 10 prediction. This technique allows to obtain a finer precision that what is possible with IBC while minimizing the amount of coding information. In at least one embodiment where a coarse precision is used for IBC, it allows at the same time to benefit from significant coding gain provided by IBC while providing a much finer precision with reduced signaling of the block vector.

Abstract: Systems, methods, and instrumentalities are disclosed for performing local illumination compensation (LIC) with multiple linear models. In an example, a device, such as a video decoding device, or a video encoding device, may determine that sub-partition-based local illumination compensation (sub-LIC) is enabled for a current block. The device may divide the current block into a plurality of sub-partitions. The device may identify a plurality of templates associated with the plurality of sub-partitions. The device may derive a plurality of local illumination compensation (LIC) parameter sets associated with the plurality of sub-partitions based on the plurality of templates associated with the plurality of sub-partitions. The device may process (e.g., encode and/or decode) the current block based on the plurality of LIC parameter sets.

Abstract: A video codec can involve encoding and decoding picture information and first and second flags, wherein the encoding or decoding of the picture information is based on a coding mode indicated by the first flag or the second flag, and the first flag indicates a subblock merge mode and the second flag indicates an inter affine prediction mode, and the encoding or decoding of the first flag uses Context-Based Adaptive Binary Arithmetic Coding (CABAC) based on a first probability model and encoding or decoding of the second flag uses CABAC based on a second probability model.

Abstract: A method for coding or decoding a block is provided, as well as a corresponding apparatus. A prediction for the block is determined, wherein motion information that is used for determining the prediction is inherited from motion information of at least two motion candidates, and the block is coded or decoded based on the determined prediction, wherein determining the prediction for the block comprises determining a value for an indicator enabling or disabling correction of the prediction, based on values of corresponding indicators of the at least two motion candidates.

Abstract: Encoding or decoding picture information can involve determining a coding mode associated with a current coding unit including picture information; determining, based on the coding mode, a first precision level associated with a first portion of a motion vector information associated with the current coding unit, and a second precision level associated with a second portion of the motion vector information; obtaining a motion vector associated with the current coding unit based on the motion vector information and the first and second precision levels; and encoding or decoding at least a portion of the picture information included in the current coding unit based on the coding mode and the motion vector.

Abstract: Systems, methods, and instrumentalities are disclosed associated with spatial geometric partition mode (SGPM). In examples, a device (e.g., a video encoder and/or a video decoder) may derive a first candidate intra prediction mode (IPM) based on a first template of a coding block. The device may derive a second candidate IPM based on a second template of the coding block. The device may process the coding block based on the first candidate IPM and the second candidate IPM.

Abstract: Devices and techniques for template matching prediction (TMP) with sub-sampling. An example device for video decoding may determine that sub-sampled TMP is enabled for a current block. The device may determine a search area for performing TMP. The device may determine, based on the search area, a sub-sampled search area for performing the sub-sampled TMP. The device may perform the sub-sampled TMP on the sub-sampled search area to determine a candidate prediction block for the current block. The device may decode the current block based on the candidate prediction block.

Abstract: Systems, methods, and instrumentalities are disclosed herein for the field of video encoding and decoding. In examples, a video decoder or encoder may determine that a template-based prediction is enabled for a current block. A prediction block and a template orientation for the current block may be determined based on template matching. The decoder or encoder may decode or encode the current block based on the prediction block and the template orientation. In examples, the prediction block may be adjusted (e.g., horizontally flipped, vertically flipped, diagonally flipped, and/or rotated) based on the determined template orientation and the current block may be decoded or encoded based on the adjusted (e.g., reoriented) prediction block.

Abstract: In one implementation, when coding a block in the intra prediction mode, the block can be split into two sub-partitions by a geometrically located straight line. Each geometric partition within the CU is intra predicted using its own intra mode with its available reference sample. One sub-partition copies and uses the intra prediction mode from the parent block, and another sub-partition uses another implicit or explicit signaled intra prediction mode. After predicting geometric partition, the sample values along the split boundary are adjusted using a blending process with adaptive weights. The geometric partition based intra prediction could be applied for one angular intra prediction mode, or only for one negative-directional intra prediction mode, or only for one specific intra prediction mode (e.g., mode 34). The transform selection or other intra coding tools (i.e., intra sub-partition) can be adapted for the geometric partition based intra prediction.

Abstract: Systems, methods, and instrumentalities are disclosed for performing local illumination compensation (LIC) with multiple linear models. In an example, a device, such as a video decoding device, or a video encoding device, may determine that sub-partition-based local illumination compensation (sub-LIC) is enabled for a current block. The device may divide the current block into a plurality of sub-partitions. The device may identify a plurality of templates associated with the plurality of sub-partitions. The device may derive a plurality of local illumination compensation (LIC) parameter sets associated with the plurality of sub-partitions based on the plurality of templates associated with the plurality of sub-partitions. The device may process (e.g., encode and/or decode) the current block based on the plurality of LIC parameter sets.