Abstract: Method, apparatus, and non-transitory storage medium for coding and decoding video data using temporal motion vector prediction (TMVP) is provided. The method may include receiving video bitstream comprising one or more pictures; determining that the one or more pictures are to be predicted in a regular merge mode or an adaptive motion vector prediction (AMVP) mode. A displacement vector associated with a current block in a current picture is obtained, the displacement vector being signaled in the video bitstream to identify a reference block in the current picture. A TMVP candidate list comprising the motion information is generated and a motion vector for the current block using the TMVP candidate list is derived. Then the current block is decoded using the derived motion vector for prediction in the regular merge mode or the adaptive motion vector prediction (AMVP) mode.

Abstract: An approach for reconstructing a Network Abstraction Layer (NAL) unit for video decoding using at least one processor includes decoding a first syntax element included in a NAL unit header; determining, based on the first syntax element, a NAL unit class including a plurality of NAL unit types; decoding a second syntax element included in the NAL unit header; and based on the NAL unit class being a first NAL unit class, determining a NAL unit type from among the NAL unit types using a combination of the NAL unit class and the second syntax element, and reconstructing the NAL unit based on the determined NAL unit type; and based on the NAL unit class being a second NAL unit class, determining a temporal identifier (TID) based on the second syntax element, and reconstructing the NAL unit based on the determined TID.

Abstract: A method of decoding an encoded video. The method includes obtaining the encoded video bitstream and determining whether a chroma array type of a video sequence included in the encoded video bitstream is a first chroma array type indicating that the video sequence includes multiple color planes and that the multiple color planes are jointly. In addition, based on determining that the chroma array type is not the first chroma array type, the method further includes setting a value of at least one syntax element to zero without parsing the at least one syntax element from the encoded video bitstream, and based on the value of the at least one syntax element being zero, decoding the video sequence without applying at least one tool corresponding to the at least one syntax element.

Abstract: A method for video coding, executable by a processor, includes receiving video data, determining a directionality of a sample block of the received video data, the directionality corresponding to a descriptor, applying a geometric transformation in which filter coefficients of a cross-component filter or reconstructed samples in a filter support region are rotated by a first amount based on the directionality being a first direction and rotated by a second amount based on the directionality being a second direction different from the first direction, and decoding the video data based on the applied geometric transformation.

Abstract: There is included a method and apparatus comprising computer code configured to cause a processor or processors to perform obtaining media data, generating, from the media data, one or more event segments, appending the one or more event segments, to a first event processing buffer, the one or more event segments comprising an event start offset for each of the one or more event segments based on a time at which the each of the one or more event segments is appended to the first event processing buffer, appending the one or more event segments, to a second event processing buffer, the one or more event segments comprising event dispatch information for the each of the one or more event segments, and dispatching the one or more event segments based on the first event processing buffer and the event dispatch information in the second event processing buffer.

Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video encoding includes receiving circuitry and processing circuitry. The processing circuitry determines whether a block is under a local dual tree structure, and disallows a palette based coding mode for encoding the block in response to the block being under the local dual tree structure.

Abstract: A method and apparatus for encoding or decoding a video sequence includes applying a Cross-Component Linear Model (CCLM) to a video sequence, and applying an interpolation filter in the Cross-Component Linear Model (CCLM), wherein the interpolation filter is dependent upon a YUV format of the video sequence.

Abstract: A method, computer program, and computer system is encoding or decoding video data. Video data may include a syntax element indicating a quantization index, wherein a range of the quantization index is extended by an offset value. The syntax element may be parsed to determine the quantization index, a quantization step size may be obtained from a lookup table based on the quantization index and the offset value; and the video data may be encoded or decoded based on the quantization step size.

Abstract: Aspects of the disclosure provide a method and an apparatus for video decoding. The apparatus includes processing circuitry. The processing circuitry applies an intra prediction mode with a multiple reference line (MRL) prediction to a current block. For each weight candidate combination including a respective first weight candidate and a respective second weight candidate in a plurality of weight candidate combinations, a subset of samples in the current block is predicted using intra prediction fusion that is based on a first reference line weighted by the respective first weight candidate and a second reference line weighted by the respective second weight candidate. The subset of samples includes top samples in a top-most row and left samples in a left-most column. A gradient cost is determined based on the predicted subset of samples and reconstructed samples outside the current block. A weight candidate combination is selected based on the gradient costs.

Abstract: Aspects of the disclose provide methods and an apparatus for video and/or image coding. The apparatus includes processing circuitry that receives a bitstream including a plurality of pictures. The processing circuitry determines an initial motion vector (MV) associated with a motion compensation padding (MCP) block according to motion information of a boundary block located at a picture boundary of a picture in the plurality of pictures. The boundary block is located in the picture. The MCP block is located in an MCP area outside of the picture and adjacent to the picture boundary. The initial MV has a fractional precision. The processing circuitry generates a final MV associated with the MCP block based on the initial MV. The final MV has an integer precision. The processing circuitry reconstructs, according to the generated final MV having the integer precision, at least a sample in the MCP block.

Abstract: A method, computer program, and computer system is provided for aligning across layers in a coded video stream. A video bitstream having multiple layers is decoded. One or more subpicture regions are identified from among the multiple layers of the decoded video bitstream, the subpicture regions including a background region and one or more foreground subpicture regions. An enhanced subpicture is decoded and displayed based on a determination that a foreground subpicture region is selected. The background region is decoded and displayed based on a determination that a foreground subpicture region was not selected.

Abstract: An approach for encoding/decoding video data, performed by at least one processor, including: obtaining video data; parsing the obtained video data into blocks; generating a set of parameters of a current block, the set of parameters including at least block position information, motion vector information, and delta values; storing a subset of parameters included in the set of parameters in association with the current block; selecting a first warp model of the current block based on a subset of parameters; and decoding the video data based on the first warp model.

Abstract: Processing circuitry receives a video bitstream comprising a current coding block in a picture coded in a template-based multiple reference line intra prediction (TMRL) mode. The processing circuitry determines combinations of reference lines and intra prediction modes for the current coding block. A first combination in the combinations includes a first reference line and a first intra prediction mode. For the first combination, the processing circuitry calculates template entry delta values respectively associated with entries of a template of the current coding block based on the first reference line and the first intra prediction mode, and calculates a first template matching cost value by unequal weighting of the template entry delta values.

Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, processing circuitry receives a coded video bitstream including a current picture. The current picture includes a chroma block in a chroma separate tree, the chroma block being collocated in a same luma area with one or more luma blocks. The processing circuitry decodes, from the coded video bitstream, a syntax element that indicates a current picture referencing (CPR) mode for the chroma block, and determines, in response to the CPR mode, a chroma block vector for the chroma block according to one or more luma block vectors associated with the one or more luma blocks. The chroma block vector indicates a reference chroma block in the current picture. The processing circuitry reconstructs the chroma block based on the reference chroma block in the current picture.

Abstract: Methods, apparatus, and computer readable storage medium for processing a media stream. The media stream may follow a DASH or CMAF standard. The method may include receiving media stream data comprising: a plurality of media chunks including a first media chunk and a second media chunk; and Addressable Resource Index (ARI) information associated with the first media chunk; determining track switching information based on the ARI information; determining, based on the track switching information, a switch to a different media track at the second media chunk is needed; and receiving the first media chunk and the second media chunk via respective media track, wherein each of the first media chunk and the second media chunk is delivered to the streaming client device with a delivery delay that is no more than one chunk.

Abstract: Aspects of the disclosure provide a method and an apparatus for video decoding. The apparatus includes processing circuitry that receives a coded bitstream comprising a first block in a current picture. The processing circuitry obtains prediction information indicating whether the first block is coded in an intra template matching prediction (IntraTMP) mode. If the IntraTMP mode is applied to the first block, the first block is reconstructed based on a prediction block within a reconstructed search area in the current picture. A reference template of the prediction block is matched to a current template of the first block in the IntraTMP mode. An IntraTMP-based block vector BVIntraTMP of the first block is stored. The IntraTMP-based block vector indicates a position displacement between the current template of the first block and the reference template of the prediction block. A second block is reconstructed based on the stored IntraTMP-based block vector.

Abstract: A method performed by a video decoder includes receiving a coded video bitstream including a current picture that includes at least one block. The method includes determining that the at least one block is to be predicted in a reconstruction-reordered intra block copy (RR-IBC) mode. The method includes obtaining a syntax element from the at least one block, the syntax element indicating a flip mode. The method includes determining whether reconstruction flip is applied to the at least one block. The method includes, in response to determining the reconstruction flip is applied to the at least one block, predicting a flip pattern for the at least one block based on neighboring reconstruction samples of the at least block and a corresponding reference block of the at least one block. The method further includes decoding the at least one block based on the flip mode and the predicted flip pattern.

Abstract: Systems and methods for monitoring, reporting, and notification of media processing entities using system variables and events are provided. According to embodiments, schemes for the monitoring, reporting, and notification may be created, updated, and deleted using a media processing entity (MPE) application programming interface (API). According to embodiments, based on the scheme being implemented by an MPE, a value of a variable of the MPE or a status of an event of the MPE, during the monitoring, or as a part of the reporting, or as a part of the notification may be sent by the MPE and received.

Abstract: A plurality of candidate predictions of a current vertex is determined. The current vertex is one of a plurality of vertices of a mesh. Each of the plurality of candidate predictions is determined based on a respective one of a plurality of triangles in the mesh and including two-dimensional (2D) coordinates in a 2D domain. An average prediction of the plurality of candidate predictions is computed. A 2D prediction of the current vertex is selected from a prediction list that includes the plurality of candidate predictions and the average prediction. A three-dimensional (3D) prediction of the current vertex is determined based on one or more neighboring vertices of the current vertex in the mesh. A prediction residue comprising a prediction error of the current vertex is encoded. The prediction residue is obtained based on the selected 2D prediction and the determined 3D prediction of the current vertex.

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. The processing circuitry extracts, from a bitstream, a signal indicative of an application of a template matching based block vector refinement for coding a current block in a current picture referencing (CPR) mode. The processing circuitry derives a first refined block vector associated with the current block according to the template matching based block vector refinement. The first refined block vector includes a first block vector refinement offset applied on a first block vector associated with the current block. The processing circuitry reconstructs the current block according to a first reference block in a same picture as the current block, the first reference block being indicated by the first refined block vector.