公开(公告)号：US20220312022A1

公开(公告)日：2022-09-29

申请号：US17838522

申请日：2022-06-13

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/30 ,  H04N19/174 ,  H04N19/70 ,  H04N19/169

Abstract: A method for video processing is described. The method includes performing a conversion between a video comprising one or more pictures comprising one or more subpictures comprising one or more slices and a bitstream representation of the video according to a rule, and wherein the bitstream representation includes a number of coded units, wherein the rule specifies that a decoding order of coded units within a subpicture is in an increasing order of subpicture level slice index values of the coded units.

公开(公告)号：US20230022497A1

公开(公告)日：2023-01-26

申请号：US17946335

申请日：2022-09-16

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/46 ,  H04N19/169 ,  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 format rule. The format rule specifies that a first video picture is an associated intra random access point picture of a second picture and that the second picture are constrained to belong to a same video layer.

公开(公告)号：US20230007309A1

公开(公告)日：2023-01-05

申请号：US17943366

申请日：2022-09-13

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/70 ,  H04N19/46 ,  H04N19/169 ,  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 comprising one or more pictures in one or more video layers and a bitstream of a video, wherein the bitstream comprises a coded video sequence that includes one or more access units, and wherein the bitstream further comprises a first syntax element indicating whether an access unit includes a picture for each video layer making up the coded video sequence.

公开(公告)号：US20220377380A1

公开(公告)日：2022-11-24

申请号：US17850670

申请日：2022-06-27

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/70 ,  H04N19/184 ,  H04N19/169 ,  H04N19/174

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, wherein the format rule specifies that a first syntax element signaled in a sequence parameter set (SPS) of the bitstream is indicative of a length of identifiers of subpictures in the SPS, and wherein the signaling of the first syntax element is independent of a value of a second syntax element that is indicative of explicit signaling of the identifiers of the subpictures in the SPS or a picture parameter set (PPS).

公开(公告)号：US20220377379A1

公开(公告)日：2022-11-24

申请号：US17850626

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 ofvideo processing includesperforming a conversionbetween a picture of a video and a bitstream of the video, wherein the bitstream conforms to a format rule, wherein the format rule specifies a mapping between identifiers of one or more subpictures of the picture and the one or more subpictures is not included in a picture header of the picture, and wherein the format rule further specifies that the identifiers of the one or more subpictures are derived based on syntax elements in a sequence parameter set (SPS) and a picture parameter set (PPS) referred to by the picture.

公开(公告)号：US20220368898A1

公开(公告)日：2022-11-17

申请号：US17852934

申请日：2022-06-29

Applicant: Bytedance Inc.

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

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/186 ,  H04N19/176

Abstract: A method of video processing, including performing a conversion between a video unit of a video and a bitstream representation of the video, wherein the conversion includes applying a deblocking filter to at least some samples on boundaries of the video unit, wherein deblocking quantization parameter (QP) values used in the deblocking filter are determined according to a rule, and wherein the rule specifies that whether the deblocking QP values are equal to dequantization QP values for the video unit is based on whether an adaptive color transform (ACT) mode is applied to the video unit.

公开(公告)号：US20220329869A1

公开(公告)日：2022-10-13

申请号：US17848504

申请日：2022-06-24

Applicant: Bytedance Inc.

Inventor： Ye-kui WANG

IPC: H04N19/70 ,  H04N19/44

Abstract: A method of video processing includes performing a conversion between a video and a bitstream of the video. The bitstream includes one or more output layer sets each including one or more video layers. The bitstream conforms to a format rule, wherein the format rule specifies that a number of decoded picture buffer parameter syntax structures included in a video parameter set for the bitstream is equal to: zero, in a case that each output layer set includes a single video layer; or one plus a value of a syntax element, in a case that each output layer set includes a single layer is not true.

公开(公告)号：US20220321882A1

公开(公告)日：2022-10-06

申请号：US17835647

申请日：2022-06-08

Applicant: Bytedance Inc.

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

IPC: H04N19/117 ,  H04N19/80 ,  H04N19/186 ,  H04N19/176 ,  H04N19/174 ,  H04N19/70

Abstract: An example method of video processing includes applying, in a conversion between a video comprising multiple components and a bitstream representation of the video, a deblocking filter to video blocks of the multiple components. A deblocking filter strength for the deblocking filter of each of the multiple components is determined according to a rule that specifies to use a different manner for determining the deblocking filter strength for the video blocks of each of the multiple components.