公开(公告)号：US20230088230A1

公开(公告)日：2023-03-23

申请号：US17897967

申请日：2022-08-29

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

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

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/105 ,  H04N19/172

Abstract: A video processing method includes performing a conversion between a video and a bitstream of the video. The bitstream conforms to a format rule specifying a condition that controls whether or how one or more syntax elements related to picture order counts for a long term reference picture are included in a reference picture list syntax structure in the bitstream.

公开(公告)号：US20230084926A1

公开(公告)日：2023-03-16

申请号：US17962852

申请日：2022-10-10

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

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

IPC: H04N19/70 ,  H04N19/186 ,  H04N19/169 ,  H04N19/117

Abstract: Systems, methods and apparatus for video processing are described. The video processing may include video encoding, video decoding, or video transcoding. One example method of video processing includes performing a conversion between a video and a bitstream of the video according to a format rule. The format rule specifies that constraints on values of one or more first syntax elements in an adaptation parameter set are defined based on semantics of second syntax elements in a picture header and/or a slice header if a picture or a slice referring to the adaptation parameter set.

公开(公告)号：US20230084006A1

公开(公告)日：2023-03-16

申请号：US17989409

申请日：2022-11-17

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang

IPC: H04N19/157 ,  H04N19/174 ,  H04N19/70 ,  H04N19/103 ,  H04N19/136

Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of video processing includes performing a conversion between a video comprising a video picture comprising a slice and a bitstream of the video according to a rule. The rule specifies that a default value of a syntax element specifying a number of entries in a reference picture list syntax structure associated with a reference picture list (RPL) index is equal to 0 due to a condition being satisfied. The condition is satisfied in case (1) the video picture is an instantaneous decoding refresh picture, (2) a first syntax flag specifies that RPL syntax elements are not present in a slice header of the slice, and (3) a second syntax flag specifies that RPL information is not present in a picture header of the video picture.

公开(公告)号：US20230078115A1

公开(公告)日：2023-03-16

申请号：US17990247

申请日：2022-11-18

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

Inventor： Ye-kui Wang ,  Zhipin Deng

IPC: H04N19/196 ,  H04N19/70 ,  H04N19/172 ,  H04N19/167 ,  H04N19/117 ,  H04N19/82

Abstract: Methods, apparatus, systems for performing video processing such as video encoding, video decoding, or video transcoding are described. One example method of video processing includes performing a conversion between a video comprising one or more video layers and a bitstream of the video according to a rule. The rule specifies that responsive to a value of a first field in a sequence parameter set (SPS) that is referred to by a video layer, a second field in a video parameter set referred to by the SPS that is indicative of a maximum number of sublayers allowed in the bitstream is construed to be equal to a third field in the SPS. The third field is indicative of a maximum number of sublayers allowed in the video layer.

公开(公告)号：US20230059682A1

公开(公告)日：2023-02-23

申请号：US17969976

申请日：2022-10-20

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/169 ,  H04N19/174

Abstract: Methods and apparatus for processing of video are described. The processing may include video encoding, decoding, or transcoding. One example 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 subpicture cannot be a random access type of subpicture in response to the subpicture not being a leading subpicture of an intra random access point subpicture. The leading subpicture precedes the intra random access point subpicture in output order.

公开(公告)号：US20230052835A1

公开(公告)日：2023-02-16

申请号：US17957375

申请日：2022-09-30

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang

IPC: H04N19/70 ,  H04N19/174 ,  H04N19/184

Abstract: Methods and apparatus for video processing are described. The video processing may include video encoding, video decoding or video transcoding. One example video processing method includes performing a conversion between a video including one or more pictures including one or more slices and a coded representation of the video, wherein the coded representation conforms to a format rule that specifies that a condition of a field in the coded representation controls a constraint on a slice type or whether the slice type is included in the coded representation for a video slice, wherein the field includes a general constraint flag, a network abstraction layer unit type or whether the video slice is in a first video picture of an access unit.

公开(公告)号：US20230047030A1

公开(公告)日：2023-02-16

申请号：US17957882

申请日：2022-09-30

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang

IPC: H04N19/70 ,  H04N19/52 ,  H04N19/172 ,  H04N19/174 ,  H04N19/132 ,  H04N19/96 ,  H04N19/33 ,  H04N19/105

Abstract: Methods, devices and systems for video coding and encoding, which include conforming to constraints on collocated pictures, are described. One example method of video processing includes performing a conversion between a video including a current picture and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that the bitstream includes a flag for disabling a use of a temporal motion vector prediction tool for the current picture based on whether a reference picture in a decoded picture buffer has a spatial resolution and a scaling window offset that are identical to that of the current picture.

公开(公告)号：US20230025260A1

公开(公告)日：2023-01-26

申请号：US17946647

申请日：2022-09-16

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/70 ,  H04N19/30 ,  H04N19/172 ,  H04N19/132 ,  H04N19/593 ,  H04N19/423

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 having one or more video layers and a bitstream of the video according to a format rule, and wherein the format rule specifies that a value of a variable indicating whether to output a picture in an access unit is determined based on a flag indicating whether to output another picture in the access unit.

公开(公告)号：US20230023356A1

公开(公告)日：2023-01-26

申请号：US17946637

申请日：2022-09-16

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/423 ,  H04N19/30 ,  H04N19/174 ,  H04N19/172 ,  H04N19/70

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 having one or more video layers and a bitstream of the video according to a format rule, and wherein the format rule specifies that a value of a flag that indicates whether to remove pictures previously decoded and stored in a decoded picture buffer from the decoded picture buffer when decoding an access unit of a certain type is included in the bitstream.

公开(公告)号：US20230021827A1

公开(公告)日：2023-01-26

申请号：US17949058

申请日：2022-09-20

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/105 ,  H04N19/169 ,  H04N19/174 ,  H04N19/46

Abstract: Methods and apparatus for processing of video are described. The processing may include video encoding, decoding or transcoding. One example video processing method includes performing a conversion between a video including a current picture including a current subpicture including a current slice and a bitstream of the video. The bitstream conforms to a format rule that disallows an active entry in a reference picture list of the current slice from including a first picture that precedes in a decoding order a second picture that includes a step-wise temporal sublayer access subpicture in response to conditions associated with at least the first picture and the current subpicture.