Abstract: A method and system of multimedia streaming services using DASH (Dynamic Adaptive Streaming over HTTP) are disclosed. According to this method, one or more Push Directives are sent from a client to a server to indicate information related to media data requested. Each Push Directive comprises a Push type including Push-rate and Push-rate Directive includes information associated with a push data rate related to the media data requested. If the Push-rate Directive is received by the server, one or more groups of data for the media data requested are pushed from the server to the client according to the push data rate. According to another method, fragmented MPDS are used, where at least one fragmented MPD omits a MPD header, MPD payload, Period header or Period payload. In yet another method, a status message group includes SharedResourceAllocation message that comprises parameters including bandwidth and pacingRate.

Abstract: A method and system of multimedia streaming services using DASH (Dynamic Adaptive Streaming over HTTP) are disclosed. According to this method, one or more Push Directives are sent from a client to a server to indicate information related to media data requested. Each Push Directive comprises a Push type including Push-rate and Push-rate Directive includes information associated with a push data rate related to the media data requested. If the Push-rate Directive is received by the server, one or more groups of data for the media data requested are pushed from the server to the client according to the push data rate. According to another method, fragmented MPDS are used, where at least one fragmented MPD omits a MPD header, MPD payload, Period header or Period payload. In yet another method, a status message group includes SharedResourceAllocation message that comprises parameters including bandwidth and pacingRate.

Abstract: A method of palette management for palette coding in a video coding system receives input data associated with a current block in a high-level picture structure and initializes a palette predictor in the high-level picture structure before a corresponding palette of a first palette-coded block in the high-level picture structure is coded. If a palette mode is selected for the current block, the method applies the palette coding to the current block using a current palette and updates the palette predictor based on the current palette to generate an updated palette predictor for a next block coded in the palette mode.

Abstract: A method and system of multimedia streaming services using DASH (Dynamic Adaptive Streaming over HTTP) are disclosed. According to this method, one or more Push Directives are sent from a client to a server to indicate information related to media data requested. Each Push Directive comprises a Push type including Push-rate and Push-rate Directive includes information associated with a push data rate related to the media data requested. If the Push-rate Directive is received by the server, one or more groups of data for the media data requested are pushed from the server to the client according to the push data rate. According to another method, fragmented MPDS are used, where at least one fragmented MPD omits a MPD header, MPD payload, Period header or Period payload. In yet another method, a status message group includes SharedResourceAllocation message that comprises parameters including bandwidth and pacingRate.

Abstract: A method or system for supporting dynamic construction of a user selected sub-region (e.g., viewport or region of interest) from other sub-regions of a reference media presentation encodes reference media presentation as component tracks. A streaming decoder receives a streaming media file of the reference media presentation and displays an arbitrarily selected sub-region of the reference media presentation. The streaming media file has a derived track that (i) references one or more of the plurality of component tracks and (ii) specifies a set of operations for constructing media samples based on the media samples of the referenced component tracks. The streaming decoder provides media samples for the selected sub-region by retrieving the referenced component tracks and performing the set of operations specified by the derived track.

Abstract: Aspects of the disclosure provide an apparatus that includes interface circuitry and processing circuitry. The interface circuitry is configured to receive signals carrying metadata that associates a region of interest in a first visual view provided by a first visual track with the first visual track and a second visual track that provides a second visual view that is a part of the first visual view. The processing circuitry is configured to parse the metadata, determine, when the region of interest is selected, the second visual track to provide visual data, and generate images for the region of interest based on the visual data from the second visual track.

Abstract: A video processing method includes receiving a virtual reality (VR) content, obtaining a picture from the VR content, encoding the picture to generate a part of a coded bitstream, and encapsulating the part of the coded bitstream into ISO Base Media File Format (ISOBMFF) file(s). In one exemplary implementation, the ISOBMFF file(s) may include a transform property item that is set to enable at least one of a projection transformation, a packing transformation, a VR viewport selection, and a VR region of interest (ROI) selection in track derivation. In another exemplary implementation, the ISOBMFF file(s) may include a first parameter, a second parameter, and a third parameter associated with orientation of a viewport, with the first, second and third parameters indicating a yaw angle, a pitch angle and a roll angle of a center of the viewport, respectively. Further, an associated video processing apparatus is provided.

Abstract: Methods for coding syntax related to palette coding generated in a video coding system are disclosed. According to one embodiment, the current block size checked against the pre-defined block size. If the current block size is larger than the pre-defined block size, a current coding mode is selected from a coding group excluding a palette coding mode. If the current block size is smaller than or equal to the pre-defined block size, the current coding mode is selected from a coding group including the palette coding mode. In another embodiment, if the current block size is greater than a maximum transform size, a current coding mode is selected from a coding group excluding a palette coding mode. If the current block size is smaller than or equal to the maximum transform size, the current coding mode is selected from a coding group including the palette coding mode.

Abstract: Methods and apparatus for a coding system using palette mode coding for colour video are disclosed. According to method, when the palette mode is enabled, separate coding of luma and chroma components is disabled or if separate coding of luma and chroma components, the palette mode is disabled. According to another method, when the palette mode is enabled for the current image, palette mode coding is only applied to the luma blocks and non-palette mode coding is applied to the chroma blocks. According to yet another method, palette mode coding is applied to the luma blocks using luma palettes if the palette mode is selected for the luma blocks and palette mode coding applying to the chroma blocks using chroma palettes if the palette mode is selected for the chroma blocks. According to yet another method, the scan direction for a non-square CU depends on the shape of the non-square.

Abstract: A method and apparatus perform palette coding of a block of video data by initializing the palette or triplet palette or using a selected palette or triplet palette from a preceding image area for the beginning block of the current image area. The method receives input data associated with a current image area consisting of multiple blocks. For the beginning block, coding palette predictor is determined based on an initial palette or triplet palette or based on a selected palette or triplet palette associated with a selected block located at a location before the end of a preceding image area. For blocks of the current image area, palette coding is applied to the blocks, where at least one block uses the palette predictor for the beginning block as the palette predictor.

Abstract: A method and system of multimedia streaming services using DASH (Dynamic Adaptive Streaming over HTTP) are disclosed. According to this method, one or more Push Directives are sent from a client to a server to indicate information related to media data requested. Each Push Directive comprises a Push type including Push-rate and Push-rate Directive includes information associated with a push data rate related to the media data requested. If the Push-rate Directive is received by the server, one or more groups of data for the media data requested are pushed from the server to the client according to the push data rate. According to another method, fragmented MPDS are used, where at least one fragmented MPD omits a MPD header, MPD payload, Period header or Period payload. In yet another method, a status message group includes SharedResourceAllocation message that comprises parameters including bandwidth and pacingRate.

Abstract: A method for palette coding is disclosed. In an encoder side, the method determines whether a first block is coded using a palette coding mode or a non-palette coding. If the first block is coded using the non-palette coding mode, a first color table for the first block is derived based on one or more color tables associated with one or more previously processed blocks. If the first block is coded using the palette coding mode, the first color table is derived from the first block. A second block coded after the first block may use the first color table as a palette prediction. At the decoder side, if the current block is coded using the palette coding mode, a first color table based on a previous coded block is derived and the current block is decoded using a first color table as a palette predictor.

Abstract: A media content delivery apparatus that encodes media content as multiple spatial objects is provided. The media content delivery apparatus encodes a first spatial object according to a first set of parameters. The media content delivery apparatus also encodes a second spatial object according to a second set of parameters. The first and second spatial objects are encoded independently. The media content delivery apparatus also generates a metadata based on the first set of parameters, the second set of parameters, and a relationship between the first and second spatial objects. The media content delivery apparatus then transmits or stores the encoded first spatial object, the encoded second spatial object, and the generated metadata.

Abstract: A method of IntraBC coding using restricted reference area is disclosed. A reference block is selected from an available ladder-shaped reference area comprising previously processed blocks before the current working block in the current CTU row and previously processed blocks in one or more previous CTU rows. A location of a last previously processed block of a second previous CTU row that is one CTU row farther away from the current CTU row than a first previous CTU row is always in a same vertical location or after a same vertical position of a last previously processed block of the first previous CTU row. The current picture may be partitioned into multiple CTU rows for applying wavefront parallel processing (WPP) on the multiple CTU rows, where the current working block corresponds to a current working block. Similar restrictions may also be applied to slice/tile-based parallel processing.

Abstract: A video processing method includes receiving a virtual reality (VR) content, encoding visual data obtained from the VR content to generate a part of a coded bitstream, and encapsulating the part of the coded bitstream into ISO Base Media File Format (ISOBMFF) file (s). In one exemplary implementation, the ISOBMFF file (s) may include a timed metadata track associated with a sphere visual track, where the timed metadata track is set to signal that the associated sphere visual track contains at least one spherical region contributed from at least one region visual track. In another exemplary implementation, the ISOBMFF file (s) may include a timed metadata track associated with a region visual track, where the timed metadata track is set to signal that the associated region visual track contributes to at least one spherical region carried in at least one sphere visual track. Further, an associated video processing apparatus is provided.

Abstract: A method and system of message exchange for controlling flow associated with multimedia streaming services from a server to a client using DASH are disclosed. In one method, one or more Push Directives are sent from a client to a server to indicate information related to media data requested. At least one selected Push Directive uses one URLTemplate that comprises a list of media parameter values, and where each media parameter value corresponds to one media parameter associated with one media segment requested. The server then pushes one or more groups of data for the media data requested to the client according to the list of media parameter values. In another method, at least one selected Push Directive uses one URLTemplate that includes a first number to represent a number of repeating difference of media parameter values associated with requested media segments.

Abstract: Aspects of the disclosure provide a method and an apparatus for deriving composite tracks. The disclosed apparatus includes a processing circuitry. The processing circuitry is configured to generate a file that includes elementary track boxes respectively for elementary tracks. The elementary track box indexes a sequence of media samples in a time order that forms an elementary track. The processing circuitry is configured to construct a composite track box for a composite track. The composite track box identifies one or more elementary tracks, and a composite operation to form the composite track based on the one or more elementary tracks. The processing circuitry is further configured to generate a media presentation based on the composite track.

Abstract: A method of video coding using palette coding mode for color video in a non-444 color format is disclosed. The non-444 video data can be converted to the 444 format so that the palette designed for the 444 format can be used for the non-444 video data. For the 4:2:0 color format, each chroma sample collocated with corresponding quad luma samples is padded with three chroma samples to form converted quad chroma samples. For the 4:2:0 color format, if a current pixel does not belong to the color palette, one or more escape values are signaled for the current pixel and the escape value associated with the chroma sample of the current pixel for each color component is not signaled for three of the quad chroma sample locations collocated with corresponding quad luma samples.

Abstract: A method of palette management for palette coding in a video coding system receives input data associated with a current block in a high-level picture structure and initializes a palette predictor in the high-level picture structure before a corresponding palette of a first palette-coded block in the high-level picture structure is coded. If a palette mode is selected for the current block, the method applies the palette coding to the current block using a current palette and updates the palette predictor based on the current palette to generate an updated palette predictor for a next block coded in the palette mode.

Abstract: Methods and apparatus for a coding system using palette mode coding for colour video are disclosed. According to method, when the palette mode is enabled, separate coding of luma and chroma components is disabled or if separate coding of luma and chroma components, the palette mode is disabled. According to another method, when the palette mode is enabled for the current image, palette mode coding is only applied to the luma blocks and non-palette mode coding is applied to the chroma blocks. According to yet another method, palette mode coding is applied to the luma blocks using luma palettes if the palette mode is selected for the luma blocks and palette mode coding applying to the chroma blocks using chroma palettes if the palette mode is selected for the chroma blocks. According to yet another method, the scan direction for a non-square CU depends on the shape of the non-square.