公开(公告)号：US20220103867A1

公开(公告)日：2022-03-31

申请号：US17484283

申请日：2021-09-24

申请人： Lemon Inc.

发明人： Ye-Kui WANG

IPC分类号： H04N19/70 ,  H04N19/30 ,  H04N19/172 ,  H04N19/105 ,  H04N19/107

摘要： Systems, methods and apparatus for encoding, decoding or transcoding visual media data are described. One example method of processing visual media data includes performing a conversion between visual media data and a bitstream of the visual media data including multiple layers according to a format rule; wherein the format rule specifies that a supplemental enhancement information (SEI) message is included in the bitstream to indicate that it is allowed for a decoder to decode 1) a dependent random access point (DRAP) picture in a layer associated with the SEI message and/or 2) pictures included in the layer and following the DRAP picture in a decoding order and an output order, without having to decode other pictures in the layer except for an intra random access point (IRAP) picture associated with the DRAP picture.

公开(公告)号：US20220086473A1

公开(公告)日：2022-03-17

申请号：US17476134

申请日：2021-09-15

申请人： Lemon Inc.

发明人： Ye-Kui WANG

IPC分类号： H04N19/44

摘要： Systems, methods and apparatus for encoding or decoding a file format that stores one or more images are described. One example method includes performing a conversion between a visual media file and a bitstream of a visual media data according to a format rule, wherein the format rule specifies a characteristic of a syntax element in the visual media file, wherein the syntax element has a value that is indicative of a number of bytes used for indicating a constraint information associated with the bitstream.

公开(公告)号：US20220086387A1

公开(公告)日：2022-03-17

申请号：US17477257

申请日：2021-09-16

申请人： Lemon Inc.

发明人： Ye-Kui WANG

IPC分类号： H04N7/01

摘要： Systems, methods and apparatus for processing visual media data are described. One example method includes performing a conversion between visual media data and a visual media file that includes one or more tracks that store one or more bitstreams of the visual media data according to a format rule; wherein the one or more bitstreams include coded subpictures of the visual media data, and wherein the format rule specifies that a container of boxes of subpicture entity groups indicating rules for processing the coded subpictures is included in a file-level box.

公开(公告)号：US20220086385A1

公开(公告)日：2022-03-17

申请号：US17476081

申请日：2021-09-15

申请人： Lemon Inc.

发明人： Ye-Kui WANG

IPC分类号： H04N7/01

摘要： Systems, methods and apparatus for encoding or decoding a file format that stores one or more images are described. One example method includes performing a conversion between a visual media file and a bitstream of a visual media data according to a format rule, where the bitstream includes one or more output layer sets and one or more parameter sets that include one or more profile tier level syntax structures, where at least one of the profile tier level syntax structures includes a general constraints information syntax structure, where the format rule specifies that a syntax element is included in a configuration record in the visual media file, and where the syntax element indicates a profile, a tier, or a level to which an output layer set identified by an output layer set index indicated in the configuration record conforms.

公开(公告)号：US20220086498A1

公开(公告)日：2022-03-17

申请号：US17477284

申请日：2021-09-16

申请人： Lemon Inc.

发明人： Ye-Kui WANG

IPC分类号： H04N19/70 ,  H04N19/132 ,  H04N19/184 ,  H04N19/169 ,  H04N19/172

摘要： Systems, methods and apparatus for processing visual media data are described. One example method includes performing a conversion between visual media data and a visual media file that includes one or more tracks that store one or more bitstreams of the visual media data according to a format rule; wherein the format rule specifies whether to include, in a configuration record of a track, a first element indicative of a picture width of the track and/or a second element indicative of a picture height of the track is based on (1) whether a third element indicative of whether the track contains a specific bitstream corresponding to a specific output layer set and/or (2) whether the configuration record is for a single-layer bitstream, and wherein the format rule further specifies that the first element and/or the second element, when included in the configuration record of the track, are represented in a field including 16 bits.

公开(公告)号：US20220086495A1

公开(公告)日：2022-03-17

申请号：US17473485

申请日：2021-09-13

申请人： Lemon Inc.

发明人： Ye-Kui WANG

IPC分类号： H04N19/70 ,  H04N19/30 ,  H04N19/169 ,  H04N19/172

摘要： Systems, methods and apparatus for storing or parsing a visual media file according a file format include performing a conversion between a visual media data and a visual media file that stores a bitstream of the visual media data according to a format rule. The visual media file stores one or more tracks comprising one or more video layers. The format rule specifies that whether a first set of syntax elements indicative of layer dependency information is stored in the visual media file is dependent on whether a second syntax element indicating that all layers in the visual media file are independent has a value 1.

公开(公告)号：US20220086494A1

公开(公告)日：2022-03-17

申请号：US17473425

申请日：2021-09-13

申请人： Lemon Inc.

发明人： Ye-Kui WANG

IPC分类号： H04N19/70 ,  H04N19/30

摘要： Systems, methods and apparatus for visual media data processing are described. One method includes performing a conversion between a visual media data and a visual media file that stores a bitstream of the visual media data in multiple tracks according to a format rule that specifies that the file-level information includes a syntax element that identifies one or more tracks from the multiple tracks that contain a specific type of sample group that includes operation point information.

公开(公告)号：US20220086431A1

公开(公告)日：2022-03-17

申请号：US17477221

申请日：2021-09-16

申请人： Lemon Inc.

发明人： Ye-Kui WANG

IPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/169 ,  H04N19/176

摘要： Systems, methods and apparatus for processing visual media data are described. One example method includes performing a conversion between visual media data and a visual media file that includes one or more tracks that store one or more bitstreams of the visual media data according to a format rule; wherein the visual media file includes a base track that references one or more subpicture tracks, and wherein the format rule specifies an order of non-VCL (video coding layer) NAL (network abstraction layer) units in a sample of the base track in reconstructing a video unit from the sample of the base track and samples in the one or more subpicture tracks.

公开(公告)号：US20220070497A1

公开(公告)日：2022-03-03

申请号：US17464415

申请日：2021-09-01

申请人： Lemon Inc.

发明人： Ye-Kui WANG ,  Li ZHANG

IPC分类号： H04N19/70 ,  H04N19/176 ,  H04N19/184 ,  H04N19/517

摘要： Systems, methods and apparatus for processing image data are described. One example method includes performing a conversion between a visual media file and a bitstream. The visual media file comprises image items each comprising a sequence of one or more pictures according to a media file format, and the bitstream includes access units each consisting of one or more pictures each belonging to a layer according to a video coding format. The media file format specifies that image items comprising pictures originated from the bitstream are allowed to be associated with different instances of a property descriptor that indicates high-level characteristics of the bitstream.

公开(公告)号：US20220109848A1

公开(公告)日：2022-04-07

申请号：US17475826

申请日：2021-09-15

申请人： Lemon Inc.

发明人： Ye-Kui WANG

IPC分类号： H04N19/132 ,  H04N19/117 ,  H04N19/30 ,  H04N19/169

摘要： Systems, methods and apparatus for encoding or decoding a file format that stores one or more images are described. One example method includes performing a conversion between a visual media file and a bitstream of a visual media data according to a format rule, where the format rule specifies that first adaptation parameter set network abstraction layer units are disallowed from being simultaneously stored in in the visual media file in (1) any one or both of samples of video coding layer tracks or sample entries of the video coding layer tracks, and (2) samples of non-video coding layer tracks, where the video coding layer tracks are tracks containing video coding layer network abstraction layer units, and where the first adaptation parameter set network abstraction layer units includes luma mapping with chroma scaling parameters for a video stream and scaling list parameters for the video stream.