Abstract: A device may be configured to signal downsampling offset information for coded video in a phase indication information message. A device may be configured to receive the phase indication information message. The phase indication message may apply to a current cropped decoded picture and persist for all subsequent pictures of a current layer in output order with the same cropped picture width and cropped picture height as the current cropped decoded picture until a picture in the current layer with an associated phase indication information message and the same cropped picture width and cropped picture height as the current cropped decoded picture is output and follows the current picture in output order.

Abstract: A method of decoding video data includes: receiving a buffering period message; parsing a first syntax element in the buffering period message, wherein the first syntax element plus one specifies a maximum number (M) of temporal sublayers for which coded picture buffer removal delay and coded picture buffer removal offset are indicated in the buffering period message; and parsing a second syntax element in the buffering period message, in a case that a value of the first syntax element is greater than a threshold value, wherein the second syntax element specifies whether decoded picture buffer output time offsets are present for temporal sublayer representations.

Abstract: A device may be configured to signal range extension profile information for coded video according to one or more of the techniques described herein.

Abstract: A device may be configured to perform filtering based on information included in a neural network post-filter characteristics message. In one example, the neural network post-filter characteristics message includes a syntax element indicating a purpose of a post-processing filter and a syntax element specifying whether syntax elements related to a purpose, input formatting, output formatting, and complexity of the post-processing filter are present in the neural network post-filter characteristics message. The syntax element indicating a purpose may precede the syntax element specifying whether syntax elements are present.

Abstract: A device may be configured to compress feature data according to one or more of the techniques described herein. In one example, feature data may be compressed by using residual encoding to enhance the feature data by removing redundancies. Enhanced feature data may be spatially down sampled and the number of channels of the enhanced feature data may be reduced by applying a 2D convolution operation. A heatmap based on the reduced enhanced feature data may be generated. The reduced enhanced feature data may be scaled using the generated heatmap. The scaled reduced enhanced feature data may be entropy encoded to generate a bitstream.

Abstract: A device may be configured to perform filtering based on information included in a neural network post-filter characteristics message. In one example, the neural network post-filter characteristics message includes a syntax element indicating whether a purpose of a neural network post-filter is specified by an application. In one example, the neural network post-filter characteristics message includes a syntax element specifying a universal resource identifier indicating an application specified purpose.

Abstract: A device may be configured to perform filtering based on information included in a neural network post-filter characteristics message. In one example, the neural network post-filter characteristics message includes a syntax element indicating a number of output pictures generated for each interlaced input picture. In one example, the neural network post-filter characteristics message includes a syntax element specifying whether an input picture is rotated.

Abstract: An electronic device for encoding a picture is described. The electronic device includes a processor and instructions stored in memory that are in electronic communication with the processor. The instructions are executable to encode a gradual temporal layer access (GTLA) picture. The instructions are further executable to send the GTLA picture.

Abstract: A device may be configured to perform filtering based on information included in a neural network post-filter characteristics message. In one example, the neural network post-filter characteristics message includes a syntax element indicating whether only a luma matrix is present in an output tensor. In one example, the neural network post-filter characteristics message includes a syntax element indicating a presence of a syntax element indicating a location of chroma samples, in a case where not only the luma matrix is present in an output tensor.

Abstract: A system for decoding a video bitstream includes receiving a reference picture set associated with a frame including a set of reference picture identifiers. The reference picture set identifies one or more reference pictures to be used for inter-prediction of the frame based upon its associated least significant bits of a picture order count based upon the reference picture identifiers. The one or more reference pictures is a second or greater previous frame to the frame having the matching reference picture identifier.

Abstract: A method of decoding video data by a device is provided. A first flag syntax in a picture parameter set is decoded. The first flag specifies whether tiles within each slice are in raster scan order or the tiles within each slice cover a rectangular region of a picture. The method determines, based on the first flag syntax, whether a slice address syntax is present in a slice header. The slice address syntax is decoded when the slice address is present in the slice header.

Abstract: Systems and methods for performing motion vector prediction for video coding are disclosed. A motion vector predictor is determined based at least in part on motion information associated with a selected motion vector predictor origin and offset values corresponding to a selected sampling point. The sampling point is specified according to a set of direction and distance on a sampling map for the motion vector predictor origin.

Abstract: A device may be configured to signal neural network post-filter parameter information. In one example, a device signals a neural network post-filter characteristics message including a syntax element specifying a number of interpolated pictures generated by a post-processing filter between consecutive pictures used as input for the post-processing filter. In one example, a neural network post-filter characteristics message includes a syntax element specifying a number of decoded output pictures used as input for the post-processing filter.

Abstract: This disclosure relates to video coding and more particularly to techniques for signaling buffering period information for coded video. According to an aspect of an invention, a second syntax element in a buffering period syntax structure is parsed wherein the second syntax element specifies whether coded picture buffer related syntax elements are present for each temporal sublayer in a range of 0 to a value of a first syntax element or whether the coded picture buffer related syntax elements are present for the first syntax element'th temporal sublayer.

Abstract: A device may be configured to signal output layer set information according to one or more of the techniques described herein. The device comprising one or more processors configured to: receiving a video parameter set including syntax elements; parsing first syntax element from the video parameter set specifying whether at least one output layer set specified by the video parameter set contains more than one layer; and parsing second syntax element specifying whether the video parameter contains sequence-level hypothetical reference decoder parameters in a case that the first syntax element specifies that at least one output layer set specified by the video parameter set contains more than one layer.

Abstract: This disclosure relates to video coding and more particularly to techniques for signaling a picture type in coded video. According to an aspect of an invention, 4 bits NAL unit type information in a NAL unit header is decoded; and a NAL unit type indicating that a content of a NAL unit is trailing picture is determined.

Abstract: A video coding device may be configured to perform video coding according to one or more of the techniques described herein.

Abstract: A device may be configured to signal scaling window information according to one or more of the techniques described herein.

Abstract: According to an aspect of an invention, a method for signaling reference pictures in video coding is disclosed. The method comprises: decoding a number of entries in a reference picture list syntax structure; decoding a number of reference index active minus one syntax in a slice header, if the number of entries is greater than one; and deriving an active variable by using the number of reference index active minus one syntax.

Abstract: A device may be configured to parse a syntax clement specifying the number of available languages within a presentation associated with an audio stream. A device may be configured to parse one or more syntax elements identifying each of the available languages and parse an accessibility syntax element for each language within the presentation.