Abstract: A method of a service enabler architecture layer (SEAL) can include receiving a monitoring event subscription request for network connection status information at a network resource management server in the SEAL from a vertical application layer (VAL) server. The monitoring event subscription request can indicate a target VAL user equipment (UE), a type of the network connection status information, and a timeout period indicating an amount of time lapsed after the monitoring event subscription request was transmitted. The requested network connection status information is not transmitted after the timeout period. The network connection status information of the target VAL UE can be obtained from a wireless network system. A network connection status information response message can be transmitted from the network resource management server in the SEAL to the VAL server. The network connection status information response message can include the network connection status information of the target VAL UE.

Abstract: A video decoding method includes obtaining a current frame of a video input; partitioning the current video frame into a plurality of coding blocks; predicting a symbol level for each coding block in intra prediction modes included in an allowed intra prediction mode (AIPM) set; transforming and quantizing a residual symbol level; entropy coding the transformed and quantized residual symbol level; and outputting a bitstream. The intra prediction modes included in the AIPM set are determined by determining whether a current video coding format for the current frame is of a video coding scheme based on VVC standard or a video coding scheme based on AV1 standard. The intra prediction modes include 6 most probable modes (MPM) and 32 remaining modes in the AIPM set for VVC standard, and directional modes of 8 nominal angles and non-directional or smooth modes in the AIPM set for AV1 standard.

Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes receiving circuitry and processing circuitry. In some embodiments, processing circuitry decodes, prediction information for a block in an I slice from a coded video bitstream, and determines, whether an intra block copy (IBC) mode is possible for the block in the I slice. In response to a slice type parameter indicating I slice and at least a width or height of the block being greater than 64, the processing circuitry sets a current mode type parameter to MODE_TYPE_INTRA. Further, in an embodiment, the processing circuitry decodes a flag that indicates whether a skip mode is applied on the block from the coded video bitstream. Then, the processing circuitry reconstructs the block at least partially based on the flag.

Abstract: A method of utilizing an 8-bit primary transform core matrix to decode compressed video or image data or encode uncompressed video or image data. The method may include determining whether to use a first transform core matrix that is of a first size type or a second transform core matrix that is of a second size type that is smaller than the first size type. When a result of the determination is to use the first transform core matrix, encoding or decoding the target file using the 8-bit primary transform core matrix that has the size that is 64-point or larger. If not, the method may include extracting the second transform core matrix of the second size type from the first transform matrix and encoding or decoding the target file using the extracted second transform core matrix.

Abstract: An apparatus for video decoding, includes processing circuitry configured to determine an affine model for a current block coded with an interweaved affine mode. Based on the affine model, a first prediction block corresponding to a first pattern for partitioning the current block into first sub-blocks and a second prediction block corresponding to a second pattern for partitioning the current block into second sub-blocks can be generated. The first and second prediction blocks include interpolated samples having an intermediate bit-depth larger than an input bit-depth of the current block. Co-located first and samples in the first and second prediction blocks with a precision corresponding to the intermediate bit-depth are weighted averaged to obtain averaged samples. The averaged samples are rounded to the input bit-depth to obtain corresponding third samples in a final prediction block of the current block.

Abstract: This disclosure relates to video processing that includes iteratively predicting a chroma block in a Chroma from Luma (CfL) prediction mode based on downsampled luma samples downsampled from a plurality of downsampling filters, and selecting a target downsampling filter from the plurality of downsampling filters that corresponds to an error score determined for the iteratively predicting.

Abstract: The various embodiments described herein include methods and systems for encoding and decoding video. In one aspect, a method includes receiving video data comprising a plurality of blocks, including a first block, from a video bitstream. The method also includes obtaining a first syntax element from the video bitstream, the first syntax element indicating a quantity, N, of temporal motion vector predictor (TMVP) candidates for a motion vector predictor (MVP) list. The method further includes identifying a set of TMVP candidates, the set of TMVP candidates having a size less than or equal to N, and generating the MVP list using at least the set of TMVP candidates. The method also includes reconstructing the first block using the MVP list.

Abstract: The various embodiments described herein include methods and systems for encoding and decoding video. In one aspect, a method includes receiving a video bitstream that includes a plurality of blocks. The method also includes obtaining, from the video bitstream, respective values for one or more parameters associated with a block in the plurality of blocks, the one or more parameters corresponding to an arithmetic coder probability update rate, where the respective values for the one or more parameters are determined from a set of predefined values. The method further includes calculating the arithmetic coder probability update rate based on the respective values for the one or more parameters signaled in the video bitstream, and determining one or more coding contexts based on the calculated arithmetic coder probability update rate. The method also includes decoding the block in the plurality of blocks based on the one or more coding contexts.

Abstract: The various embodiments described herein include methods and systems for encoding and decoding video. In one aspect, a method includes obtaining video data that includes a plurality of blocks, including a first block, where the video data is to be coded in a warp mode or a motion mode. The method further includes identifying two or more warp groups for the first block and determining a respective cost associated with each warp group of the two or more warp groups. The method also includes selecting a warp group from the two or more warp groups based on the respective costs, and encoding, in accordance with the selected warp group, the first block and a syntax element indicating the warp mode or the motion mode without regards to whether a valid motion vector is available.

Abstract: Method, apparatus, and system for texture coordinate prediction for mesh compression are provided. The process may include receiving, for a mesh, a coordinate of a first vertex and a coordinate of a prediction candidate vertex in a three dimensional (3D) space. The process may include determining a stretch perpendicular distance associated with the first vertex and the prediction candidate vertex, the stretch perpendicular distance being based on a conversion of the 3D space into a two dimensional (2D) space, and determining a 2D texture coordinate of the first vertex based on the stretch perpendicular distance associated with the first vertex and the prediction candidate vertex. The process may also include determining a residual of a predicted coordinate of the first vertex and an actual 2D coordinate of the first vertex; and compressing the mesh based on entropy coding the residual.

Abstract: A method of decoding an encoded video bitstream using at least one processor, including obtaining a coded video sequence from the encoded video bitstream; obtaining a picture unit from the coded video sequence; obtaining a PH NAL unit included in the picture unit; obtaining at least one coded slice NAL unit included in the picture unit; decoding a coded picture based on the PH NAL unit, the at least one coded slice NAL unit a PPS NAL unit obtained from the coded video sequence, and am SPS NAL unit obtained from the coded video sequence; and outputting the decoded picture, wherein the SPS NAL unit is available to the at least one processor before the PPS NAL unit, and wherein the PPS NAL unit is available to the at least one processor before the PH NAL unit and the at least one coded slice NAL unit.

Abstract: A video data processing method includes generating, based on a spliced texture map and depth map, an encoded video bitstream of a free-view video based on multiple images collected by an ith camera in a camera array. The method further includes obtaining boundary metadata information indicating a scene boundary of the free-view video, and adding the boundary metadata information to a file encapsulation data box, to obtain an extended data box. The method further includes performing encapsulation on the encoded video bitstream and the extended data box to obtain a video media file of the free-view video including the boundary metadata information. The method further includes delivering the video media file to a video client, enabling the video client to determine that the ith camera is a boundary camera, and to render video content in the scene boundary indicated by the boundary metadata information.

Abstract: Aspects of the disclosure provide a method and an apparatus including processing circuitry that determines, based on a syntax element in a coded video bitstream, that a current block including a plurality of subblocks is coded in a subblock-based temporal motion vector prediction (SbTMVP) mode. Motion vector offset (MVO) information indicating an MVO is received. The MVO indicates a motion offset of a displacement vector (DV) used to adjust a location of a collocated block in a collocated reference picture. An updated DV of the current block is determined based on the DV and the MVO. SbTMVP information of a respective subblock in the plurality of subblocks is derived based on motion information of a corresponding subblock in the collocated block indicated by the updated DV. The plurality of subblocks in the SbTMVP mode is reconstructed based on the SbTMVP information of the subblock in the plurality of subblocks.

Abstract: The various implementations described herein include methods and systems for coding video. In one aspect, a method includes receiving video data including a current image frame having a sample with a first color component and a second color component. The method further includes obtaining a first clipping range for pixel values of the first color component in the sample based on a syntax element value in the received video data and deriving a second clipping range for pixel values of the second color component in the sample based on the first clipping range. The method further includes in response to a pixel value of the second color component exceeding the second clipping range, restricting the pixel value to a minimum value or a maximum value corresponding to the second clipping range. The method further includes reconstructing the current non-monochrome image frame using the restricted pixel value for the sample.

Abstract: An apparatus for video decoding includes processing circuitry configured to receive a splitting direction syntax element, a first merge triangle index syntax element, and a second merge triangle index syntax element that are associated with a coding block of a picture. The coding block is coded according to a triangular prediction mode and partitioned into a first prediction unit and a second prediction unit according to a split direction. A first merge index identifies first motion information in a merge candidate list of the coding block. A second merge index identifies second motion information in the merge candidate list of the coding block. The coding block is reconstructed according to first prediction samples of the first prediction unit and second prediction samples of the second prediction unit. A value of the second merge triangle index syntax element is based on the first merge index.

Abstract: A first motion vector and a second motion vector are determined for a first block in a current picture of a video, where the first motion vector is indicative of a first reference block in a first picture, and the second motion vector is indicative of a second reference block in a second picture. A bilateral template is generated based on a weighted combination of the first reference block and the second reference block. A refined first motion vector is determined based on the bilateral template and a first set of reference blocks in the first picture. A refined second motion vector is determined based on the bilateral template and a second set of reference blocks in the second picture. Prediction information of the first block is generated according to (i) the refined first motion vector, (ii) the refined second motion vector, and (iii) a final motion compensation interpolation filter.

Abstract: Aspects of the disclosure provide methods and apparatuses for mesh coding (e.g., compression and decompression). In some examples, an apparatus for mesh coding includes processing circuitry. The processing circuitry decodes a plurality of initial maps in two-dimension from a bitstream carrying a three-dimensional (3D) mesh frame. The processing circuitry determines at least two sampling rates associated with different portions of the plurality of initial maps and recovers from the plurality of initial maps and based on the at least two sampling rates associated with the different portions of the plurality of initial maps to obtain a plurality of recovered maps. A first portion of the plurality of initial maps is recovered based on a first sampling rate, and a second portion of the plurality of initial maps is recovered based on a second sampling rate. The processing circuitry reconstructs the 3D mesh frame based on the plurality of recovered maps.

Abstract: Aspects of the disclosure include methods, apparatuses, and non-transitory computer-readable storage mediums for video encoding/decoding. An apparatus includes processing circuitry that decodes a video bitstream to obtain a reduced-resolution residual block for a current block. The processing circuitry determines that a block level flag is set to a pre-defined value. The pre-defined value indicates that the current block is coded in reduced-resolution coding. Based on the block level flag, the processing circuitry generates a reduced-resolution prediction block for the current block by down-sampling a full-resolution reference block of the current block. The processing circuitry generates a reduced-resolution reconstruction block for the current block based on the reduced-resolution prediction block and the reduced-resolution residual block. The processing circuitry generates a full-resolution reconstruction block for the current block by up-sampling the reduced-resolution reconstruction block.

Abstract: An apparatus for video coding is provided. The apparatus includes processing circuitry that buffers first boundary pixel values of first reconstructed samples at a first node along a loop filter chain. The first node is associated with a non linear mapping based filter that is applied in the loop filter chain before a loop restoration filter. The first boundary pixel values are values of pixels at a frame boundary. The processing circuitry applies the loop restoration filter on to-be filtered reconstructed samples based on the buffered first boundary pixel values.

Abstract: A method of point cloud geometry encoding includes receiving a slice of a point cloud frame for encoding, and constructing an octree representing a geometry of points in a bounding box of the slice where a current node of the octree is partitioned with a quadtree (QT) partition or a binary tree (BT) partition. The constructing includes determining a value of a partitionSkip variable specifying a partition type and a partition direction of the current node of the octree.