公开(公告)号：US20230034923A1

公开(公告)日：2023-02-02

申请号：US17949034

申请日：2022-09-20

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/88 ,  H04N19/169 ,  H04N19/176 ,  H04N19/70

Abstract: Methods and apparatus for processing of video are described. The processing includes video encoding, decoding, or transcoding. A video processing method includes performing a conversion between a video including one or more pictures including one or more subpictures and a bitstream of the video. The bitstream conforms to a format rule that specifies that a trailing subpicture that is associated with an intra random access point subpicture or a gradual decoding refresh subpicture follows the intra random access point subpicture or the gradual decoding refresh subpicture in an order.

公开(公告)号：US20230029791A1

公开(公告)日：2023-02-02

申请号：US17949938

申请日：2022-09-21

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

Inventor： Ye-kui Wang ,  Li Zhang ,  Kai Zhang ,  Zhipin Deng

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

Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a subpicture in a video picture of a video and a bitstream of the video according to a rule. The rule specifies that multiple syntax elements are used to specify usage of a reference picture resampling tool.

公开(公告)号：US20230028609A1

公开(公告)日：2023-01-26

申请号：US17946624

申请日：2022-09-16

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/423 ,  H04N19/70 ,  H04N19/186 ,  H04N19/172

Abstract: Methods and apparatus for video processing, including coding and decoding, are described. One example video processing method includes performing a conversion between a video and a bitstream of the video according to a format rule, wherein the bitstream includes one or more output layer sets (OLSs), each OLS comprising one or more coded layer video sequences, and wherein the format rule specifies that a video parameter set indicates, for each of the one or more OLSs, a greatest allowed value of a chroma format indicator and/or a greatest allowed value of a bit depth used to represent pixels of the video.

公开(公告)号：US20230022121A1

公开(公告)日：2023-01-26

申请号：US17856601

申请日：2022-07-01

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

Inventor： Li Zhang ,  Kai Zhang ,  Hongbin Liu ,  Yue Wang

IPC: H04N19/117 ,  H04N19/14 ,  H04N19/132 ,  H04N19/96 ,  H04N19/176 ,  H04N19/82

Abstract: A method of video processing includes determining a classification of samples of a block in a video picture of a video according to a rule, wherein the video picture is divided into multiple regions, and wherein the rule disallows use of neighboring samples of a current sample across one or more boundaries of the multiple regions for the classification. The one or more boundaries of the multiple regions includes a virtual boundary for an adaptive loop filtering (ALF) process. The method also includes performing a conversion between the block and a bitstream representation of the video by selectively applying the ALF process according to the classification.

公开(公告)号：US20230021488A1

公开(公告)日：2023-01-26

申请号：US17898051

申请日：2022-08-29

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

Inventor： Zhipin Deng ,  Ye-kui Wang ,  Li Zhang ,  Kai Zhang ,  Kui Fan

IPC: H04N19/70 ,  H04N19/174 ,  H04N19/172 ,  H04N19/105 ,  H04N19/107 ,  H04N19/186 ,  H04N19/169 ,  H04N19/30

Abstract: Methods, systems, apparatus for video processing are described. A method for processing video includes performing a conversion between a video and a bitstream of the video according to a format rule, and wherein the format rule specifies whether a syntax element in a sequence parameter set (SPS) based on a value of a general constraint flag.

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：US20230014129A1

公开(公告)日：2023-01-19

申请号：US17896761

申请日：2022-08-26

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

Inventor： Jizheng Xu ,  Li Zhang ,  Kai Zhang ,  Hongbin Liu ,  Yue Wang

IPC: H04N19/132 ,  H04N19/176 ,  H04N19/423 ,  H04N19/96

Abstract: A method of visual media processing includes determining, for a conversion between a current video block of visual media data and a bitstream representation of the current video block, a buffer that stores reference samples for prediction in an intra block copy mode; for a sample spatially located at location of the current video block relative to an upper-left position of a coding tree unit including the current video block and having a block vector, computing a corresponding reference in the buffer at a reference location, wherein the reference location is determined using the block vector and the location; and upon determining that the reference location lies outside the buffer, re-computing the reference location based at least in part on a location of the current video block relative to the coding tree unit including the current video block.

公开(公告)号：US20230007253A1

公开(公告)日：2023-01-05

申请号：US17901270

申请日：2022-09-01

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang ,  Kai Zhang

IPC: H04N19/12 ,  H04N19/176 ,  H04N19/70 ,  H04N19/60 ,  H04N19/18

Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video block of a video and a bitstream of the video. The video block uses a low frequency non-separable transform for the conversion. The bitstream conforms to a format rule specifying that a syntax element is included at a syntax level for the bitstream. The syntax element is indicative of whether use of a scaling matrix which is derived from a reference scaling list is enabled for the video block. The syntax level is a sequence level, a picture level, or a slice level.

公开(公告)号：US20230007244A1

公开(公告)日：2023-01-05

申请号：US17944870

申请日：2022-09-14

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/105 ,  H04N19/109 ,  H04N19/31 ,  H04N19/174 ,  H04N19/159 ,  H04N19/169 ,  H04N19/503 ,  H04N19/172

Abstract: A video processing method includes performing a conversion between a video having one or more video layers including one or more video pictures and a bitstream of the video according to a rule. The rule specifies a condition under which no picture that has been generated by a decoding process for generating an unavailable reference picture is referred to by an active entry in a reference picture list of a current slice of a current picture.

公开(公告)号：US11546601B2

公开(公告)日：2023-01-03

申请号：US17207060

申请日：2021-03-19

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

Inventor： Hongbin Liu ,  Li Zhang ,  Kai Zhang ,  Yue Wang

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/176 ,  H04N19/513 ,  H04N19/30 ,  H04N19/503

Abstract: A method of video processing includes determining, for a current block, at least one motion candidate list; and performing a conversion between the current block and a bitstream representation of the current block using the at least one motion candidate list, the at least one motion candidate list including at least one motion candidate derived from a set of neighboring blocks including one or more spatial and temporal neighboring blocks.