公开(公告)号：US11638037B2

公开(公告)日：2023-04-25

申请号：US17473554

申请日：2021-09-13

Applicant: Lemon Inc.

Inventor： Ye-Kui Wang

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

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：US12041386B2

公开(公告)日：2024-07-16

申请号：US17484338

申请日：2021-09-24

Applicant: Lemon Inc.

Inventor： Ye-Kui Wang

IPC: H04N19/46 ,  H04N7/01 ,  H04N19/105 ,  H04N19/107 ,  H04N19/172 ,  H04N19/30 ,  H04N19/70 ,  H04N19/91

CPC classification number: H04N7/01 ,  H04N19/105 ,  H04N19/107 ,  H04N19/172 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70 ,  H04N19/91

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：US20230362415A1

公开(公告)日：2023-11-09

申请号：US18311125

申请日：2023-05-02

Applicant: Lemon Inc.

Inventor： Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/136 ,  H04N19/42

CPC classification number: H04N19/70 ,  H04N19/136 ,  H04N19/42

Abstract: A mechanism for processing video data is disclosed. The mechanism includes determining when playing only a track would result in an incomplete experience, a track_in_movie (track_in_movie) flag is set to zero to prevent players from playing only the track. A conversion between a visual media data and a media data file is performed based on the track_in_movie flag.

公开(公告)号：US11611752B2

公开(公告)日：2023-03-21

申请号：US17475826

申请日：2021-09-15

Applicant: Lemon Inc.

Inventor： Ye-Kui Wang

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

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 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.

公开(公告)号：US11582456B2

公开(公告)日：2023-02-14

申请号：US17475826

申请日：2021-09-15

Applicant: Lemon Inc.

Inventor： Ye-Kui Wang

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

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 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.

公开(公告)号：US12206879B2

公开(公告)日：2025-01-21

申请号：US17476081

申请日：2021-09-15

Applicant: Lemon Inc.

Inventor： Ye-Kui Wang

IPC: H04N7/01 ,  H04N19/44 ,  H04N19/70

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 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：US11985333B2

公开(公告)日：2024-05-14

申请号：US17809199

申请日：2022-06-27

Applicant: Lemon Inc.

Inventor： Ye-Kui Wang

IPC: H04N19/167 ,  H04N7/01 ,  H04N19/132 ,  H04N19/136 ,  H04N19/169 ,  H04N19/172 ,  H04N19/30 ,  H04N19/46

CPC classification number: H04N19/167 ,  H04N7/01 ,  H04N19/132 ,  H04N19/136 ,  H04N19/172 ,  H04N19/188 ,  H04N19/30 ,  H04N19/46

Abstract: A method of processing media data. The method includes determining, for a conversion between a media data and a media data file, that a preselection element includes an indicator, wherein the indicator indicates which video data units of a main video represent a target picture-in-picture region; and performing the conversion between the media data and the media data file based on the indicator. A corresponding video coding apparatus and non-transitory computer-readable recording medium are also disclosed.

公开(公告)号：US11877011B2

公开(公告)日：2024-01-16

申请号：US17477284

申请日：2021-09-16

Applicant: Lemon Inc.

Inventor： Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/132 ,  H04N19/172 ,  H04N19/184 ,  H04N19/169 ,  H04N19/105 ,  H04N19/186

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/184 ,  H04N19/186 ,  H04N19/188

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 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：US11563983B2

公开(公告)日：2023-01-24

申请号：US17464415

申请日：2021-09-01

Applicant: Lemon Inc.

Inventor： Ye-Kui Wang ,  Li Zhang

IPC: H04N19/70 ,  H04N19/176 ,  H04N19/184 ,  H04N19/517 ,  H04N19/107 ,  H04N19/159 ,  H04N19/67

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 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：US11863768B2

公开(公告)日：2024-01-02

申请号：US17464251

申请日：2021-09-01

Applicant: Lemon Inc.

Inventor： Ye-Kui Wang ,  Li Zhang

IPC: H04N19/37 ,  G06F16/438 ,  H04N19/169 ,  H04N19/30 ,  H04N19/70 ,  H04N19/124 ,  H04N19/172 ,  H04N19/593

CPC classification number: H04N19/37 ,  G06F16/4393 ,  H04N19/124 ,  H04N19/172 ,  H04N19/188 ,  H04N19/30 ,  H04N19/593 ,  H04N19/70

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 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 media file format specifies a suggested transition period of an image item to be applied for a transition between the image item and a next image item during displaying of the pictures as a slideshow.