公开(公告)号：US20230020655A1

公开(公告)日：2023-01-19

申请号：US17942921

申请日：2022-09-12

Applicant: Bytedance Inc.

Inventor： Jizheng XU ,  Ye-kui WANG ,  Li ZHANG ,  Kai ZHANG

IPC: H04L9/32 ,  H04N19/174 ,  H04N19/167 ,  H04L9/30 ,  H04N19/186

Abstract: A method of digital media processing includes performing a conversion between a media segment and a bitstream of the media segment. The conversion conforming to a format rule and an encryption rule. The format rule specifying that verification information, which includes an indication of an integrity of a portion of the media segment, is signaled in the bitstream.

公开(公告)号：US20220345747A1

公开(公告)日：2022-10-27

申请号：US17850449

申请日：2022-06-27

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/70 ,  H04N19/46 ,  H04N19/184 ,  H04N19/172

Abstract: Methods, devices and systems for signaling the use of subpictures in coded video pictures are described. One example method of video processing includes performing a conversion between a video and a bitstream of a video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that a first syntax element, which indicates whether a picture of the video can be partitioned, is conditionally included in a picture parameter set (PPS) of the bitstream based on values of a second syntax element, which indicates whether identifiers of subpictures are signaled in the PPS, and a third syntax element, which indicates, in the PPS, a number of the subpictures.

公开(公告)号：US20220337815A1

公开(公告)日：2022-10-20

申请号：US17848525

申请日：2022-06-24

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/105 ,  H04N19/187 ,  H04N19/172 ,  H04N19/70

Abstract: A method of video processing includes performing a conversion between a video and a bitstream of the video, wherein the bitstream includes one or more output layer sets (OLSs) each including one or more video layers, wherein the bitstream conforms to a format rule. The format rule specifies whether or how a first syntax element indicating whether a first syntax structure descriptive of parameters of a hypothetical reference decoder (HRD) used for the conversion is included in a video parameter set (VPS) of the bitstream.

公开(公告)号：US20230046994A1

公开(公告)日：2023-02-16

申请号：US17849293

申请日：2022-06-24

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

Inventor： Kai ZHANG ,  Li ZHANG ,  Hongbin LIU ,  Zhipin DENG ,  Jizheng XU ,  Ye-kui WANG

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/176 ,  H04N19/174

Abstract: Devices, systems and methods related to digital video coding, and specifically, to signaling of slice types in video picture headers are described. One example method of video processing includes performing a conversion between a video including one or more video pictures including one or more slices and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that for a video picture of the one or more video pictures having all slices coded as I slices, P slice and B slice related syntax elements are omitted from a picture header for the video picture.

公开(公告)号：US20220337880A1

公开(公告)日：2022-10-20

申请号：US17845536

申请日：2022-06-21

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/70 ,  H04N19/46 ,  H04N19/105 ,  H04N19/187

Abstract: A method of video processing includes performing a conversion between a video comprising a plurality of video layers and a bitstream of the video, wherein the bitstream comprises a plurality of output layer sets (OLSs), each of which comprises one or more of the plurality of video layers, and the bitstream conforms to a format rule, wherein the format rule specifies that, for a layer i, where i is an integer, the bitstream includes a set of first syntax element indicative of a first variable indicating whether the layer i is included in at least one of the plurality of OLSs.

公开(公告)号：US20220329870A1

公开(公告)日：2022-10-13

申请号：US17848507

申请日：2022-06-24

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/70 ,  H04N19/169 ,  H04N19/44

Abstract: Devices, systems and methods for specifying the syntax and semantics of the decoding parameter set (DPS) are described. One example method of video processing includes performing a conversion between a video and a bitstream of the video, wherein the bitstream conforms to a format rule specifying a data structure is in a first access unit (AU) of the bitstream, wherein the first AU is located at a start of the bitstream, wherein the data structure is a type of network abstraction layer (NAL) unit.

公开(公告)号：US20230022078A1

公开(公告)日：2023-01-26

申请号：US17945273

申请日：2022-09-15

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/105 ,  H04N19/169 ,  H04N19/174 ,  H04N19/172

Abstract: A video processing method includes performing a conversion between a video having one or more video layers comprising a current picture comprising a current slice and a bitstream of the video according to a rule. The rule specifies a condition under which a reference picture list for the current slice is disallowed to have an active entry that refers to a picture that precedes, in a decoding order or an output order, an intra random access point picture associated with the current picture.

公开(公告)号：US20220360821A1

公开(公告)日：2022-11-10

申请号：US17849232

申请日：2022-06-24

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

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

Abstract: Devices, systems and methods for specifying the syntax and semantics of the decoding parameter set (DPS) are described. One example method of video processing includes determining, for a conversion between a video and a bitstream of the video, that each output layer set (OLS) in a coded video sequence (CVS) in the bitstream conforms to at least one profile-tier-level (PTL) syntax structure included in a data structure associated with decoding parameter semantics in the bitstream, and performing, based on the determining, the conversion, wherein the PTL syntax structure indicates a profile, a tier, and a level of the bitstream.

公开(公告)号：US20220329868A1

公开(公告)日：2022-10-13

申请号：US17845400

申请日：2022-06-21

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/70 ,  H04N19/187 ,  H04N19/184 ,  H04N19/172

Abstract: A method of video processing includes performing a conversion between a video including a plurality of video layers and a bitstream of the video, wherein the bitstream includes a plurality of output layer sets (OLSs), each including one or more of the plurality of video layers, and the bitstream conforms to a format rule, wherein the format rule specifies that, for an OLS having a single layer, a profile-tier-level (PTL) syntax structure that indicates a profile, a tier and a level for the OLS is included in a video parameter set for the bitstream, and the PTL syntax structure for the OLS is also included in a sequence parameter set coded in the bitstream.

公开(公告)号：US20220321901A1

公开(公告)日：2022-10-06

申请号：US17839860

申请日：2022-06-14

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/46 ,  H04N19/159 ,  H04N19/169 ,  H04N19/174

Abstract: A method of video processing includes performing a conversion between a video comprising one or more scalable video layers and a bitstream of the video. The video comprises one or more video pictures comprising one or more slices. The bitstream conforms to a format rule. The format rule specifies that a value of a field indicative of a slice type of a slice is set to indicate a type of intra slice in case that a corresponding network abstraction layer unit type is in a predetermined range and that a corresponding video layer flag indicates that a video layer containing the slice does not use inter-layer prediction.