公开(公告)号：US11206405B2

公开(公告)日：2021-12-21

申请号：US16988513

申请日：2020-08-07

Applicant: Tencent Technology (Shenzhen) Company Limited

Inventor： Xinwei Gao ,  Xunan Mao ,  Chenchen Gu

IPC: H04N19/132 ,  H04N19/124 ,  H04N19/147 ,  H04N19/176 ,  H04N19/513 ,  H04N19/523 ,  H04N19/59

Abstract: This application relates to a video decoding method performed at a computer device. The method includes: obtaining encoded data corresponding to a current video frame; obtaining a processing parameter corresponding to the current video frame; determining a target processing manner corresponding to the current video frame according to the processing parameter, the target processing manner being one of candidate processing manners, the candidate processing manners comprising at least one of a full resolution processing manner and a downsampling processing manner, and the processing parameter being consistent with a corresponding processing parameter in an encoding process; and decoding the encoded data corresponding to the current video frame according to the target processing manner, to obtain a corresponding decoded video frame. In the encoding method, a processing manner for a video frame can be flexibly selected, thereby improving video encoding quality in the case of limited bandwidth.

公开(公告)号：US11197021B2

公开(公告)日：2021-12-07

申请号：US16546045

申请日：2019-08-20

Applicant: Tencent Technology (Shenzhen) Company Limited

Inventor： Xunan Mao

IPC: H04N7/12 ,  H04N19/59 ,  H04N19/124 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176

Abstract: This application relates to an encoding resolution control method and apparatus, and relates to the field of computer technologies. The encoding resolution control apparatus determines a quantization parameter threshold of a current frame according to a preset rule; determines a quantization parameter estimated value of the current frame according to an encoding mode of an encoder; determines encoding resolution of the current frame according to the quantization parameter threshold and the quantization parameter estimated value of the current frame; and encodes the current frame into a bitstream according to the encoding resolution.

公开(公告)号：US11128888B2

公开(公告)日：2021-09-21

申请号：US16991741

申请日：2020-08-12

Applicant: Tencent Technology (Shenzhen) Company Limited

Inventor： Xinwei Gao ,  Xunan Mao ,  Chenchen Gu

IPC: H04N7/12 ,  H04N19/523 ,  H04N19/124 ,  H04N19/147 ,  H04N19/172 ,  H04N19/513 ,  H04N19/59

Abstract: This application relates to a method and apparatus, a storage medium, and a computer device for video encoding and decoding. The video encoding method includes: acquiring a reference frame corresponding to a current frame to be encoded from a video input; determining a sub-pixel interpolation mode, the sub-pixel interpolation mode comprising one of a direct sub-pixel interpolation mode or a sampled sub-pixel interpolation mode; processing the reference frame according to resolution information of the current frame using an interpolation in the sub-pixel interpolation mode, to obtain a corresponding target reference frame; and encoding the current frame according to the target reference frame, to obtain encoded data corresponding to the current frame. By using the foregoing video encoding method, a reference frame corresponding to a current frame to be encoded can be flexibly selected, thereby effectively improving the utilization efficiency of reference frames.

公开(公告)号：US11070803B2

公开(公告)日：2021-07-20

申请号：US16996358

申请日：2020-08-18

Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

Inventor： Xunan Mao

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/159 ,  H04N19/169 ,  G06F17/18 ,  H04N19/96

Abstract: In a method for determining a coding cost of a coding unit (CU) that is performed by a server, a CU subject to predictive coding in an intra-frame prediction mode is determined. Pixel gradient information corresponding to the CU is performed. A division predecision on the CU is made according to the pixel gradient information. A first coding cost is determined as a second coding cost of the CU in a case that a result of the division predecision on the CU is negative. The second CU is used for determining a division policy of a coding tree unit (CTU) corresponding to the CU, and the first coding cost is a coding cost obtained by performing predictive coding on the CU by using a current size of the CU as a size of a prediction unit (PU).

公开(公告)号：US10827182B2

公开(公告)日：2020-11-03

申请号：US16435020

申请日：2019-06-07

Applicant: Tencent Technology (Shenzhen) Company Limited

Inventor： Xunan Mao

IPC: H04N19/146 ,  H04N19/124 ,  H04N19/142 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/593 ,  H04N19/114 ,  H04N19/503 ,  H04N21/4788 ,  H04N7/14

Abstract: A video coding processing method performed by a computing device includes: obtaining a percentage of intra-prediction blocks in an inter-predicted frame in a previous group of video frame sequences; determining, according to the percentage, whether a current video scene changes, and determining a target bit rate of an intra-coded frame in a current group of video frame sequences according to the percentage when determining that the current video scene changes; and coding the intra-coded frame according to the target bit rate.

公开(公告)号：US10791326B2

公开(公告)日：2020-09-29

申请号：US16366183

申请日：2019-03-27

Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

Inventor： Xunan Mao

IPC: H04N19/107 ,  H04N19/176 ,  H04N19/147 ,  G06F17/18

Abstract: Embodiments of this application provide a video coding processing method and apparatus and a storage medium. The method includes: identifying a to-be-coded macroblock in a to-be-coded video frame; obtaining an inter-frame coding cost of the to-be-coded macroblock based on at least one inter-frame coding scheme; obtaining an intra-frame coding cost of the to-be-coded macroblock based on at least one intra-frame coding scheme; comparing the inter-frame coding cost with the intra-frame coding cost, to obtain a comparison result; determining a coding scheme of the to-be-coded macroblock based on the comparison result, the coding scheme including intra-frame predictive coding and inter-frame predictive coding; and coding the to-be-coded macroblock according to the coding scheme.

公开(公告)号：US10666939B2

公开(公告)日：2020-05-26

申请号：US16308600

申请日：2017-08-30

Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

Inventor： Xunan Mao ,  Chenchen Gu ,  Yongfang Shi ,  Anlin Gao

IPC: H04N19/105 ,  H04N19/146 ,  H04N19/177 ,  H04N19/172 ,  H04N19/115 ,  H04N19/159 ,  H04N7/14

Abstract: A method and an apparatus for processing a video bitrate, a storage medium, and an electronic device are provided. The method is performed by at least one processor and includes acquiring a number of video frames included in a current group of pictures, a starting frame of the current group of pictures being a current I frame, acquiring a target bitrate of the current I frame, based on the number of the video frames included in the current group of pictures, and encoding the current I frame, based on the target bitrate.

公开(公告)号：US12143564B2

公开(公告)日：2024-11-12

申请号：US17471324

申请日：2021-09-10

Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

Inventor： Xinwei Gao ,  Xunan Mao

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/30 ,  H04N19/46

Abstract: A video decoding method, a video encoding method, and a related apparatus are provided. In the video decoding method, for a current target video frame in a target video, reference decoding parameters in a reference frame may be obtained from video frames that have been decoded before the target video frame, and a target resolution may be obtained based on a decoding indication parameter obtained based on (e.g., fusing) the reference decoding parameters. The current target video frame may be decoded by using the target resolution.

公开(公告)号：US11979577B2

公开(公告)日：2024-05-07

申请号：US17503170

申请日：2021-10-15

Applicant: Tencent Technology (Shenzhen) Company Limited

Inventor： Xinwei Gao ,  Xunan Mao

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/30 ,  H04N19/46

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/172 ,  H04N19/30 ,  H04N19/46

Abstract: This application discloses a video decoding method, a video encoding method, and related apparatuses. The method includes: determining a current video frame; obtaining, from video frames that have been decoded, an energy parameter of an MV in a reference frame associated with the current video frame, the energy parameter including at least one of the following: an average value of the MV and a variance of the MV; determining, according to the energy parameter, a target resolution used for decoding the current video frame; and decoding the current video frame by using the target resolution. In this application, the technical problem of relatively low video encoding and decoding efficiency caused by complex processing operations in the related art is resolved.

公开(公告)号：US11943473B2

公开(公告)日：2024-03-26

申请号：US17470960

申请日：2021-09-09

Applicant: Tencent Technology (Shenzhen) Company Limited

Inventor： Xinwei Gao ,  Weiran Li ,  Xunan Mao ,  Chenchen Gu

IPC: H04N19/59 ,  H04N19/105 ,  H04N19/176 ,  H04N19/33 ,  H04N19/593

CPC classification number: H04N19/59 ,  H04N19/105 ,  H04N19/176 ,  H04N19/33 ,  H04N19/593

Abstract: A video decoding method is disclosed and performed by an electronic device, the method including: obtaining a first resolution used in decoding a current block and a second resolution used in decoding a reference block in a current video frame, the reference block being a reference block used for performing directional prediction on the current block in the current video frame; building a reconstruction block from the reference block; when the first resolution is greater than the second resolution, adjusting the reconstruction block of the reference block to the first resolution to obtain a first reconstruction block; and performing directional prediction on the current block according to the first reconstruction block and the current block.