公开(公告)号：US20230071429A1

公开(公告)日：2023-03-09

申请号：US17897998

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: H04N19/70 ,  H04N19/46 ,  H04N19/169 ,  H04N19/174

Abstract: A video processing method includes performing a conversion between a video including one or more pictures and a bitstream of the video. The bitstream conforms to a format rule specifying that one or more syntax elements indicative of coding information are selectively included in a picture parameter set of the bitstream responsive to whether it is indicated that each picture referring to the picture parameter set includes a single slice.

公开(公告)号：US20230027555A1

公开(公告)日：2023-01-26

申请号：US17892746

申请日：2022-08-22

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

Inventor： Kai Zhang ,  Li Zhang ,  Ye-kui Wang ,  Zhipin Deng ,  Kui Fan ,  Jizheng Xu ,  Hongbin Liu

IPC: H04N19/174 ,  H04N19/70 ,  H04N19/172 ,  H04N19/119 ,  H04N19/129 ,  H04N19/176 ,  H04N19/96

Abstract: Techniques for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video including a video picture including a video tile including one or more slices and a bitstream of the video according to a rule. The rule specifies that a second slice in a tile that includes a first slice in a picture has a height that is represented in a unit of coding tree units. The first slice has a first slice index, and the second slice has a second slice index that is determined based on the first slice index and a number of explicitly provided slice heights in the video tile. The height of the second slice is determined based on the first slice index and the second slice index.

公开(公告)号：US20230026922A1

公开(公告)日：2023-01-26

申请号：US17949074

申请日：2022-09-20

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/157 ,  H04N19/70 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/103 ,  H04N19/136

Abstract: A video processing method includes performing a conversion between a video that includes a picture with two neighboring subpictures and a bitstream of the video. The bitstream conforms to a format rule that specifies that the two neighboring subpictures with different types of network abstraction layer (NAL) units have syntax elements with a same first value that indicates whether each of the two neighboring subpictures in a coded layer video sequence is treated as a picture.

公开(公告)号：US20230023220A1

公开(公告)日：2023-01-26

申请号：US17950040

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 ,  H04N19/96 ,  H04N19/105 ,  H04N19/187

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, in in case a subpicture is treated as a video picture for the conversion, a cross-layer alignment restriction is applied to less than all of the multiple layers including a current layer that includes the subpicture and a subset of layers associated with the current layer.

公开(公告)号：US20230012183A1

公开(公告)日：2023-01-12

申请号：US17944332

申请日：2022-09-14

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

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

Abstract: Methods, devices and systems for configuring different access units in scalable video coding are described. In one example aspect, a method of video processing include performing a conversion between a video including one or more pictures in one or more video layers and a bitstream of a video. The bitstream includes a coded video sequence that includes one or more access units. The bitstream conforms to a format rule that specifies that each access unit of the one or more access units that is a gradual decoding refresh access unit includes exactly one picture for each video layer present in the coded video sequence.

公开(公告)号：US20230009491A1

公开(公告)日：2023-01-12

申请号：US17887294

申请日：2022-08-12

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

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

IPC: H04N19/70 ,  H04N19/196 ,  H04N19/174 ,  H04N19/139 ,  H04N19/132

Abstract: A method includes performing a conversion between a video including video pictures that include one or more subpictures and a bitstream of the video. The bitstream conforms to a format rule specifying that one or more syntax structures are constrained based on a constraint flag of a syntax element that includes general constraints information.

公开(公告)号：US20230007308A1

公开(公告)日：2023-01-05

申请号：US17894832

申请日：2022-08-24

Applicant: Bytedance Inc.

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

IPC: H04N19/70 ,  H04N19/136 ,  H04N19/176 ,  H04N19/172 ,  H04N19/174

Abstract: A method includes performing a conversion between a video including a video picture and a bitstream of the video according to a rule, wherein the video picture including a subpicture, a tile, and a slice, and wherein the rule specifies that, due to the subpicture including the slice that is partitioned from the tile, the conversion is performed by refraining from counting a height of the subpicture using a number of tiles of the video picture.

公开(公告)号：US20230007280A1

公开(公告)日：2023-01-05

申请号：US17894888

申请日：2022-08-24

Applicant: Bytedance Inc.

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

IPC: H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/136

Abstract: A method includes making a determination, according to a rule, about whether a height of a subpicture of a video picture of a video is less than a height of a tile row of the video picture; and performing, using the determination, a conversion between the video and a bitstream of the video.

公开(公告)号：US20220400290A1

公开(公告)日：2022-12-15

申请号：US17889887

申请日：2022-08-17

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang

IPC: H04N19/70 ,  H04N19/174 ,  H04N19/172 ,  H04N19/105

Abstract: A method includes performing a conversion, according to a rule, between a current slice of a current picture of a video and a bitstream of the video, wherein the rule specifies that a first syntax element of a picture parameter set (PPS) and a second syntax element of the PPS control whether a third syntax element is included in the bitstream, and wherein the first syntax element indicates whether a weighted prediction is enabled for bi-directional slices of coded pictures referring to the PPS, the second syntax element indicates whether information related to the weighted prediction is present in picture headers or slice headers of coded pictures referring to the PPS, and the third syntax element indicates a number of weights associated with a reference picture list 1 of the current slice.

公开(公告)号：US20220400278A1

公开(公告)日：2022-12-15

申请号：US17891590

申请日：2022-08-19

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang ,  Li Zhang

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/105 ,  H04N19/186 ,  H04N19/174

Abstract: A method includes performing a conversion between a current slice of a current picture of a video and a bitstream of the video, wherein the bitstream conforms to a format rule, and wherein the format rule specifies that values of a plurality of syntax elements indicative of whether prediction weights are included in a slice header of the current slice are inferred based on a slice type of the current slice and a value of a first flag included in a picture parameter set (PPS) referred to by the current picture.