公开(公告)号：US20220103865A1

公开(公告)日：2022-03-31

申请号：US17476809

申请日：2021-09-16

Applicant: Lemon Inc.

Inventor： Ye-Kui WANG

IPC: H04N19/70 ,  H04N19/132 ,  H04N19/105 ,  H04N19/186 ,  H04N19/169

Abstract: 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 including one or more tracks storing one or more bitstreams of the visual media data according to a format rule; wherein the format rule specifies whether a first element indicative of whether a track contains a bitstream corresponding to a specific output layer set controls whether a second element indicative of a chroma format of the track and/or a third element indictive of a bit depth information of the track is included in a configuration record of the track.

公开(公告)号：US20220086497A1

公开(公告)日：2022-03-17

申请号：US17476178

申请日：2021-09-15

Applicant: Lemon Inc.

Inventor： Ye-Kui WANG

IPC: H04N19/70 ,  H04N7/01

Abstract: 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, and wherein the format rule specifies that the syntax element that has a value indicative of a level identification is coded in any one or both of a subpicture common group box or a subpicture multiple groups box using eight bits.

公开(公告)号：US20220086446A1

公开(公告)日：2022-03-17

申请号：US17475774

申请日：2021-09-15

Applicant: Lemon Inc.

Inventor： Ye-Kui WANG

IPC: H04N19/132 ,  H04N19/513 ,  H04N19/159 ,  H04N19/169 ,  H04N21/2343 ,  H04N21/234

Abstract: 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 a type of a sample entry determines whether decoding capability information network abstraction layer units are included in either the sample entry of a video track in the visual media file or in a sample of the video track and the sample entry of the video track in the visual media file.

公开(公告)号：US20220086430A1

公开(公告)日：2022-03-17

申请号：US17475719

申请日：2021-09-15

Applicant: Lemon Inc.

Inventor： Ye-Kui WANG

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/169 ,  H04N19/172

Abstract: 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 a condition that controls whether an information item is included in a non-video coding layer track of the visual media file, and where a presence of the non-video coding layer track in the visual media file is indicated by a specific track reference in a video coding layer track of the visual media file.

公开(公告)号：US20220103781A1

公开(公告)日：2022-03-31

申请号：US17484919

申请日：2021-09-24

Applicant: Lemon Inc.

Inventor： Ye-Kui WANG

IPC: H04N7/01 ,  H04N19/172 ,  H04N19/70

Abstract: 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 according to a format rule, wherein the format rule specifies that a supplemental enhancement information (SEI) message that refers to a dependent random access point (DRAP) picture is included in the bitstream, and wherein the format rule further specifies that the SEI message includes a syntax element indicating a number of intra random access point (IRAP) pictures or dependent random access point (DRAP) pictures that are within a same coded layer video sequence (CLVS) as the DRAP picture.

公开(公告)号：US20220086496A1

公开(公告)日：2022-03-17

申请号：US17473554

申请日：2021-09-13

Applicant: Lemon Inc.

Inventor： Ye-Kui WANG

IPC: H04N19/70 ,  H04N19/169 ,  H04N19/30

Abstract: Systems, methods and apparatus for generating or parsing a visual media file according to 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 multiple tracks that belong to an entity group of a specific type. The format rule specifies that, responsive to the multiple tracks having a track reference to a particular type to a group identifier, the multiple tracks (A) omit carrying a sample group of a specific type or (B) carry the sample group of the specific type such that information in the sample group of the specific type is consistent with that in the entity group of the specific type.

公开(公告)号：US20220070496A1

公开(公告)日：2022-03-03

申请号：US17464311

申请日：2021-09-01

Applicant: Lemon Inc.

Inventor： Ye-Kui WANG ,  Li ZHANG

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/593 ,  H04N19/30 ,  H04N19/169

Abstract: 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 comprises access units each comprising one or more pictures each belonging to a layer according to a video coding format. The video coding format defines multiple profiles. The media file format specifies that the bitstream is represented in a file having a specific brand, and that one or more profiles used for representing the video in the bitstream are agnostic of the specific brand.

公开(公告)号：US20220070495A1

公开(公告)日：2022-03-03

申请号：US17464364

申请日：2021-09-01

Applicant: Lemon Inc.

Inventor： Ye-Kui WANG ,  Li ZHANG

IPC: H04N19/67 ,  H04N19/159 ,  H04N19/107

Abstract: 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 a sequence of one or more pictures according to a media file format, and the bitstream comprises one or more access units according to a video coding format. The bitstream is coded according to the video coding format. The media file format specifies that an image item of a specific type value in the visual media file includes a single access unit of the bitstream. The single access unit is either an Intra Random Access Picture (IRAP) access unit or a Gradual Decoding Refresh (GDR) access unit according to the video coding format. All pictures in the GDR access unit are identified as a recovery point in the bitstream.

公开(公告)号：US20220103847A1

公开(公告)日：2022-03-31

申请号：US17484338

申请日：2021-09-24

Applicant: Lemon Inc.

Inventor： Ye-Kui WANG

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/91 ,  H04N19/172

Abstract: 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 according to a format rule, wherein the format rule specifies whether and how a second type of supplemental enhancement information (SEI) message that is different from a first type of SEI message is included in the bitstream, and wherein the first type of the SEI message and the second type of the SEI message indicate a first type of dependent random access point (DRAP) picture and a second type of DRAP picture, respectively.

公开(公告)号：US20220086499A1

公开(公告)日：2022-03-17

申请号：US17477320

申请日：2021-09-16

Applicant: Lemon Inc.

Inventor： Ye-Kui WANG

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/186 ,  H04N19/169

Abstract: 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 an operating point record and an operating point group box, and wherein the format rule specifies to include, for each operating point indicated in the visual media file, in the operating point record and the operating point group box, a first element indicative of a chroma format, a second element indictive of a bit depth information, a third element indicative of a maximum picture width, and/or a fourth element indicative of a maximum picture height.