公开(公告)号：US12206902B2

公开(公告)日：2025-01-21

申请号：US18320722

申请日：2023-05-19

Applicant: Bytedance Inc.

Inventor： Li Zhang ,  Ye-kui Wang

IPC: H04N19/70 ,  H04N19/184 ,  H04N19/186

Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video picture of a video comprising one or more slices and a bitstream of the video picture according to a rule. The rule specifies that that whether a first syntax element indicating a usage of a coding tool is present at a first level is based on a syntax flag indicating whether a syntax structure of a second level is not present at the first level, wherein the second level is higher than the first level, and wherein the second level is the video picture level or higher than the video picture level.

公开(公告)号：US12143641B2

公开(公告)日：2024-11-12

申请号：US17897835

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 ,  H04N19/105 ,  H04N19/117 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/189 ,  H04N19/196 ,  H04N19/46 ,  H04N19/58 ,  H04N19/635 ,  H04N19/82 ,  H04N19/86 ,  H04N19/127

Abstract: A video processing method is provided. The method includes: performing a conversion between a video including a plurality of pictures each including at least one slice and a bitstream of the video, wherein the bitstream conforms to a format rule. The format rule specifies that a first flag in the bitstream indicates whether a picture header syntax structure of a picture is included in a slice header of a slice of the picture; and responsive to any of six flags in a picture parameter set associated with the picture is equal to 1, the first flag is equal to 0.

公开(公告)号：US12126805B2

公开(公告)日：2024-10-22

申请号：US17891800

申请日：2022-08-19

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: H04N19/103 ,  H04N19/119 ,  H04N19/129 ,  H04N19/157 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/70

CPC classification number: H04N19/129 ,  H04N19/103 ,  H04N19/119 ,  H04N19/157 ,  H04N19/172 ,  H04N19/174 ,  H04N19/1883 ,  H04N19/70

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 picture that includes one or more tiles and one or more rectangular slices and a bitstream of the video according to a rule. The rule specifies that, for iteratively determining information about the one or more rectangular slices, a variable indicating a tile index is updated only for slices having indices that are smaller than a value equal to a number of slices in the video picture minus 1.

公开(公告)号：US11997301B2

公开(公告)日：2024-05-28

申请号：US18077901

申请日：2022-12-08

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/46 ,  H04N19/169 ,  H04N19/172 ,  H04N19/187 ,  H04N19/70

CPC classification number: H04N19/46 ,  H04N19/172 ,  H04N19/187 ,  H04N19/188 ,  H04N19/70

Abstract: Several techniques for video encoding and video decoding are described. An example method of processing video data includes performing a conversion between a video and a bitstream of the video, wherein the conversion is performed according to a format rule that specifies that a supplemental enhancement information network abstraction layer unit includes a network abstraction layer unit type equal to a prefix supplemental enhancement information network abstraction layer unit type in response to the supplemental enhancement information network abstraction layer unit including a scalable nesting supplemental enhancement information message that includes a supplemental enhancement information message not associated with a particular payload type.

公开(公告)号：US11979561B2

公开(公告)日：2024-05-07

申请号：US17946335

申请日：2022-09-16

Applicant: Bytedance Inc.

Inventor： Ye-kui Wang

IPC: H04N19/172 ,  H04N19/105 ,  H04N19/109 ,  H04N19/159 ,  H04N19/169 ,  H04N19/174 ,  H04N19/31 ,  H04N19/46 ,  H04N19/503

CPC classification number: H04N19/105 ,  H04N19/109 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/188 ,  H04N19/31 ,  H04N19/46 ,  H04N19/503

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：US20240129541A1

公开(公告)日：2024-04-18

申请号：US18525057

申请日：2023-11-30

Applicant: Bytedance Inc.

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

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/172 ,  H04N19/186

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/172 ,  H04N19/186

Abstract: Embodiments for video encoding and video decoding are described. One example method includes performing a conversion between a video and a bitstream of the video according to a rule, wherein the rule specifies that only one of two conditions is true when a number of subpictures minus 1 indicated by a first syntax element in a sequence parameter set is greater than zero and when a current subpicture with a subpicture index subpicIdx of a first video picture of the video has a second syntax element in the sequence parameter set indicates that a subpicture with the subpicture index subpicIdx of each video picture of the video in a coded layer video sequence is treated as a video picture in a decoding process that excludes an in-loop filtering operation.

公开(公告)号：US20240121389A1

公开(公告)日：2024-04-11

申请号：US18507838

申请日：2023-11-13

Applicant: Bytedance Inc.

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

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

CPC classification number: H04N19/12 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60 ,  H04N19/70

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：US20240107013A1

公开(公告)日：2024-03-28

申请号：US18516447

申请日：2023-11-21

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

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

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/463 ,  H04N19/52 ,  H04N19/70 ,  H04N19/80

CPC classification number: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/139 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/463 ,  H04N19/52 ,  H04N19/70 ,  H04N19/80

Abstract: A method includes determining, for a conversion between a video block of a video and a bitstream of the video, a size of prediction block corresponding to the video block according to a rule. The method also includes performing the conversion based on the determining. The rule specifies that a first size of the prediction block is determined responsive to whether a prediction refinement using optical flow technique is used for coding the video block. The video block has a second size and is coded using an affine merge mode or an affine advanced motion vector prediction mode.

公开(公告)号：US20240107006A1

公开(公告)日：2024-03-28

申请号：US18511593

申请日：2023-11-16

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

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

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/139 ,  H04N19/167 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/196 ,  H04N19/30 ,  H04N19/52 ,  H04N19/547 ,  H04N19/573 ,  H04N19/70 ,  H04N19/82

CPC classification number: H04N19/105 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/139 ,  H04N19/167 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/196 ,  H04N19/30 ,  H04N19/52 ,  H04N19/547 ,  H04N19/573 ,  H04N19/70 ,  H04N19/82

Abstract: Methods, apparatus, systems for video processing, including video encoding or video decoding are described. One example method includes performing a conversion between a video comprising a video picture that includes a video slice and a bitstream of the video. The bitstream conforms to a format rule specifying that, in case a slice type of the video slice is type P and temporal motion vector prediction is enabled, usage of reference picture resampling (RPR) for a reference picture in a collocated reference picture list is disabled. The reference picture is indicated by a reference index of a collocated picture of the video slice used for the temporal motion vector prediction.

公开(公告)号：US20240089483A1

公开(公告)日：2024-03-14

申请号：US18508853

申请日：2023-11-14

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 ,  H04N19/174 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/46 ,  H04N19/174 ,  H04N19/176 ,  H04N19/70

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.