Abstract: A method of video processing is described. The method includes performing a conversion between a current video block of a video picture of a video and a coded representation of the video according to a buffer allocation rule, wherein the conversion uses an intra block copy (IBC) mode in which a prediction of the current video block is derived based on sample values from a same video slice with the current video block, and wherein the sample values are determined by block vectors, wherein the buffer allocation rule specifies that a virtual buffer allocated for the conversion using the IBC mode is greater than a minimum size of memory for storing a portion of the video picture searched for determining the block vectors.

Abstract: Methods, apparatus, systems for performing video processing such as video encoding, video decoding, or video transcoding are described. One example method of video processing includes performing a conversion between a video comprising one or more video layers and a bitstream of the video according to a rule. The rule specifies that responsive to a value of a first field in a sequence parameter set (SPS) that is referred to by a video layer, a second field in a video parameter set referred to by the SPS that is indicative of a maximum number of sublayers allowed in the bitstream is construed to be equal to a third field in the SPS. The third field is indicative of a maximum number of sublayers allowed in the video layer.

Abstract: A video processing method includes determining, for a conversion between a current block of a video and a bitstream representation of the video, whether to enable a level mapping operation or a level remapping operation based on a rule, wherein the level mapping operation or the level remapping operation includes changing between a first representation of a residual coefficient of the current block and a second representation of the residual coefficient of the current block based on neighboring residual coefficients of the residual coefficient; and performing the conversion by selectively using the level mapping operation or the level remapping operation based on the determining.

Abstract: Methods, devices and systems for intra-block coding based decoding or encoding of video while using block vector signaling and/or merge candidates are disclosed. An example method for video processing includes performing a conversion between a video region of a video and a bitstream representation of the video, wherein the bitstream representation selectively includes motion vector difference (MVD) related syntax elements for an intra block copy (IBC) advanced motion vector prediction (AMVP) mode based on a maximum number of a first type of IBC candidates used during the conversion of the video region, wherein, when an IBC mode is applied, samples of the video region are predicted from other samples in a video picture corresponding to the video region.

Abstract: Embodiments provide a computer-executed method, a computer system and non-transitory computer-readable media for facilitating consumer interaction with a consumer interface. The method includes displaying a representation of an item on a consumer interface rendered on a visual display of a computing device. The method also includes storing, on a non-transitory computer-readable medium: a predefined first association between a first compound consumer input and a first command such that receipt of the first compound consumer input at the consumer interface initiates the first command, and a predefined second association between a second compound consumer input and a second command such that receipt of the second compound consumer input at the consumer interface initiates the second command.

Abstract: Devices, systems and methods for digital video coding, which includes using multiple transforms, are described. In a representative aspect, a method for video processing includes selecting, as part of a multiple transform selection (MTS) process, a common transform as both a vertical transform and a horizontal transform, and applying, as part of performing a conversion between a current block of a video and a bitstream representation of the video, the vertical transform and the horizontal transform to the current block.

Abstract: A method of video processing is described. The method includes determining chroma weights used for determining a chroma prediction block of a chroma block of a current block of a video by blending predictions of the chroma block according to a rule, and performing a conversion between the current block and a coded representation of the video according to the determining. The rule specifies that the chroma weights are determined from luma weights of a collocated luma block of the current block. The current block is coded with a geometric partitioning mode.

Abstract: A method for processing a video includes determining, for a first video unit, a set of local illumination compensation (LIC) parameters including a scaling factor and an offset factor; performing or skipping a pre-process on at least partial of the set of LIC parameters; and updating at least one history based local illumination compensation parameter table (HLICT) using at least partial of the set of LIC parameters, the at least one HLICT being used for a conversion of subsequent video units.

Abstract: Techniques for implementing adaptive loop filtering are described. One example method of video processing includes making a first determination, for a conversion between a video unit of a video and a bitstream of the video, a first luma adaptive loop filter (ALF) boundary across which a luma adaptive loop filter is selectively applied to a luma component of the video unit and a second luma ALF boundary; making a second determination, from the second luma ALF boundary, a chroma ALF boundary across which a chroma adaptive loop filter is selectively applied for a chroma component of the video unit; and performing the conversion based on the first determination and the second determination.

Abstract: A method of video processing includes making a determination for a conversion between a video region of a video and a bitstream representation of the video to use a cross-component adaptive loop filtering (CC-ALF) tool for refining chroma samples values using luma sample values; and performing the conversion based on the determination, wherein the refining includes correcting the chroma sample values using a final refinement that is a further refinement of a first refinement value determined by selectively filtering the luma sample values.

Abstract: Systems, apparatus, methods, and computer program products are provided for optimized and effective leading messages, which may be an email subject that may provoke a consumer to access the body portion of an email message. A system may include circuitry configured to programmatically determine a predicted access rate for a leading message when the leading message is provided as a portion of a promotional message. Circuitry may be configured to track historical data indicating the access rates of leading messages and/or leading message terms. The circuitry may be configured to leverage the historical data to determine predicted access rates for leading messages, such as based at least in part on historical access rates associated with one or more leading message terms of the leading message.

Abstract: Provided herein are systems, methods and computer readable media for programmatically generating and/or revising deal offers for a merchant based on one or more merchant self-service indicators. In providing such functionality, the system can be configured to, for example, facilitate registration and verification of merchant identities, monitor and analyze various deal offers for merchants with similar merchant self-service indicators, that enable the system to determine the relative successfulness of a deal offer for a merchant and/or category of merchant. In some embodiments, the system may be further configured to revise the deal offer programmatically and/or upon receiving the merchant's approval of the programmatically generated proposed edits to the deal offer.

Abstract: Devices, systems, and methods for digital video coding that include cross-component prediction are described. In a representative aspect, a method for video coding includes receiving a bitstream representation of a current block of video data comprising a luma component and a chroma component, determining parameters of a linear model based on a first set of samples that are generated by down-sampling a second set of samples of the luma component, and processing, based on the parameters of the linear model, the bitstream representation to generate the current block.

Abstract: A video processing method includes deriving multiple temporal motion vector prediction (TMVP) candidates for a video block in a current picture based on multiple blocks associated with a second block in one or more pictures that are temporally co-located with the current picture, wherein the current picture is excluded from the one or more pictures, and the second block is temporally collocated with the video block, wherein the second block has a same size as the video block, and wherein a relative position of the second block to a top-left corner of a second picture of the one or more pictures is same as that of the video block to a top-left corner of the current picture; adding the multiple TMVP candidates to a motion candidate list associated with the video block; and performing a conversion between the video block and a bitstream.

Abstract: Devices, systems, and methods for digital video coding, which includes constructing separate motion candidate lists for video coding, are described. An exemplary method for video processing includes constructing, for a first video block of a video, a first motion candidate list using a first motion candidate list construction method that excludes motion candidates that are only derived from temporal blocks, and performing a conversion between the first video block and a bitstream representation of the video including the first video block according to the constructed first motion candidate list.

Abstract: Multi-HMVP for affine is described. In an exemplary aspect, a method for video processing includes deriving, for a conversion between a current block of video and a bitstream representation of the current block, an affine model for the current block based on affine related information stored in at least one history motion vector prediction (HMVP) buffer of multiple HMVP buffers, the multiple HMVP buffers being used to store affine related information of blocks coded prior the current block in different categories; and performing the conversion by using the derived affine model.

Abstract: Techniques are described for providing location-based information and functionality to people and computing devices in various ways. In at least some situations, the techniques include enabling multiple people in a common geographic area to interact in various ways, such as via devices capable of communications (e.g., cellular telephones, computing devices with wired and/or wireless communications capabilities, etc.), while in other situations at least some users who are remote from a particular geographic area may be allowed to intercommunicate with one or more other users or other entities in or related to that geographic area. In addition, the techniques include enabling the creation and maintenance of location-based virtual groups of users (also referred to as “clouds”), such as for users of mobile and/or fixed-location devices. Such clouds may enable various types of interactions between group members, and may be temporary and/or mobile.

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 more initial predictions to generate a final prediction block using a prediction refinement with optical flow (PROF) procedure by calculating motion vector differences based on variables having a bit width not exceeding a predetermined maximum bit width; and performing a conversion between the current video block and a coded representation of the video using the variables having the bit width not exceeding the predetermined maximum bit width.

Abstract: An example method of video processing includes: determining, for a conversion between a chroma block of a current processing unit of a current subpicture of a current picture of a video and a bitstream of the video, that a cross component adaptive loop filtering operation is applied to the chroma block, wherein the current picture comprises one or more subpictures; and performing the conversion based on the determining, wherein in the cross component adaptive loop filtering operation, a chroma sample of the chroma block is filtered based on information of luma samples, and wherein one or more luma samples located outside the current processing unit are excluded from the filtering of the chroma sample.

Abstract: A method for video processing is provided. The method includes determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, multiple sets of parameters, wherein each set of parameters defines a cross-component linear model (CCLM) and is derived from a corresponding group of chroma samples at corresponding chroma sample positions; determining, based on the multiple sets of parameters, parameters for a final CCLM; and performing the conversion based on the final CCLM.