Tencent Technology (shenzhen) Company Limited

Tencent Technology Company Limited

Xunan Mao

Chenchen Gu

Xinwei Gao

Jing Lv

Yongfang Shi

Anlin Gao

Haibo Deng

Licai Guo

Yaoyao Guo

Jian He

Jingchang Chen

Tao Zhang

Weiran Li

Wen Gao

Ronggang Wang

Chao Dai

Xun Zhang

Haixu Han

Bocheng Xin

Jing Lyu

Baicheng Xin

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, a first quantity and a second quantity in a target reference frame associated with the current video frame; the first quantity being a quantity of intra-frame decoded blocks in the target reference frame, and the second quantity being a quantity of inter-frame decoded blocks in the target reference frame; determining, according to a relationship between the first quantity and the second quantity, 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 the relatively low video encoding and decoding efficiency caused by complex processing operations in the related art is resolved.

Video encoding method, video decoding method, and related apparatuses

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.

Video encoding method using reference encoding parameters, video decoding method using reference decoding parameters, and related apparatuses

A video coding method includes obtaining a current frame from a plurality of video frames, from which at least two or more video frames from have different resolutions; determining an initial motion vector (MV) corresponding to each block to be encoded in the current frame at a corresponding resolution; and determining a target MV resolution according to a resolution configuration of the current frame to represent a target resolution. The method also includes determining a target MV corresponding to each block in the current frame at the target resolution represented by the target MV resolution; obtaining a motion vector prediction (MVP) corresponding to each block in the current frame at the target resolution; and encoding the current frame according to a motion vector difference (MVD) between each target MV and the corresponding MVP such that the MV and the corresponding MVP are at a same resolution.

Method and apparatus for video encoding and decoding

A video decoding method, a video encoding method, and related apparatuses. The method includes: determining a current video frame; determining a reference frame corresponding to the current video frame from video frames that have been decoded, and obtaining a target quantity of blocks that are decoded in a skip mode in the reference frame and a total block quantity of blocks in the reference frame; determining, according to a relationship between the target quantity and the total block quantity, a target resolution used for decoding the current video frame; and decoding the current video frame by using the target resolution. For different current video frames, different resolutions used for decoding can be adaptively selected, to simplify operations of determining the target resolution for decoding the current video frame, thereby resolving the technical problem of relatively low video encoding and decoding efficiency caused by complex processing operations in the related art.

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.

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.

Video decoding method and apparatus, video encoding method and apparatus, storage medium, and electronic device

A video decoding method, a video encoding method, and related apparatuses. The video decoding method includes: determining a current video frame; obtaining, from video frames that have been decoded, a first quantity of blocks of a first size and a second quantity of blocks of a second size in a reference frame associated with the current video frame, the first size being less than the second size; determining, according to a relationship between the first quantity and the second quantity, 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 the relatively low video encoding and decoding efficiency caused by complex processing operations in the related art is resolved.

A video processing method is provided. In the method, at least one pair of decoded blocks to be reconstructed in a video frame is determined. Each pair of decoded blocks in the at least one pair of decoded blocks includes a first decoded block of a first resolution and a second decoded block of a second resolution. The first decoded block is adjacent to the second decoded block. The first resolution of the first decoded block is adjusted to a target resolution. The second resolution of the second decoded block is adjusted to the target resolution. A first edge pixel set in the first decoded block is determined. A second edge pixel set in the second decoded block is determined, the second edge pixel set being adjacent to the first edge pixel set. Further, the first edge pixel set and the second edge pixel set are filtered.

Video processing method and apparatus, storage medium, and electronic device

A video encoding code rate control method of a terminal device is provided. A space domain complexity and a time domain complexity of a first picture frame in a video stream are obtained. A first target bit of the first picture frame is updated to a second target bit according to the space domain complexity and the time domain complexity. A first initial quantization parameter of the first picture frame is updated to a second initial quantization parameter according to the space domain complexity and the time domain complexity. A compressed code stream of the first picture frame is generated according to the second target bit and the second initial quantization parameter.

Video encoding code rate control method, apparatus, and device, and storage medium

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: 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; acquiring motion estimation pixel precision corresponding to a current video frame; performing sub-pixel interpolation processing on a reference frame corresponding to the current video frame according to a resolution relationship between the current video frame and the reference frame, the motion estimation pixel precision, and the sub-pixel interpolation mode, to obtain a target reference frame; and encoding the current video frame according to the target reference frame, to obtain encoded data corresponding to the current video frame.

Method and apparatus for video decoding

This application relates to a video encoding method performed at a computer device. The method includes: obtaining an input video frame; determining a processing parameter corresponding to the input video frame; selecting, from candidate processing manners according to the processing parameter, a target processing manner corresponding to the input video frame, the candidate processing manners comprising a full-resolution processing manner and a downsampling processing manner; and encoding the input video frame according to the target processing manner, to obtain encoded data corresponding to the input video frame. Therefore, the target processing manner of the input video frame can be flexibly selected, and the input video frame is encoded according to the target processing manner, to adaptively adjust a resolution of the input video frame, and improve video encoding quality.

Selective resolution video encoding method, computer device, and readable storage medium

This application relates to a picture sharing method, a computer device, and a storage medium. The method includes: receiving a picture compressed in a first compression manner; obtaining characteristic information of the picture; compressing the picture in a second compression manner in a case that the characteristic information meets a compression trigger condition, to obtain a compressed picture; receiving a picture download request for the picture, wherein the second compression manner has a higher compression ratio than the first compression manner; and returning the compressed picture in response to the picture download request. The solutions of this application reduce a network bandwidth occupied in a picture feedback process.

Picture sharing method, computer device, and storage medium

A video coding method is provided. The method includes obtaining an input video frame, obtaining a sampling parameter corresponding to the input video frame, determining downsampling information according to the sampling parameter, and encoding the input video frame according to the downsampling information to obtain encoded data corresponding to the input video frame, where determining the downsampling information includes: in response to determining the input video frame includes a B-frame, selecting a first downsampling proportion for the B-frame; and in response to determining the input video frame includes a P-frame, selecting a second downsampling proportion for the P-frame, the second downsampling proportion is lower than the first downsampling proportion, and the first and the second downsampling proportions are part of the downsampling information.

A video coding method includes: obtaining a current frame from a plurality of video frames to be encoded, the plurality of video frames having different resolutions; determining a target motion vector (MV) corresponding to each block in the current frame at a target resolution represented by selected target MV resolution information; obtaining a motion vector prediction (MVP) corresponding to each block and at the target resolution; and encoding the current frame according to a motion vector difference (MVD) between each target MV and the MVP of each block to obtain encoded data. The encoded data includes identification information representing the target resolution.

A video coding method includes obtaining an input video frame; determining down-sampling information corresponding to the input video frame in response to determining that a target processing manner corresponding to the input video frame is a down-sampling processing manner; encoding the input video frame according to the down-sampling information to obtain encoded data corresponding to the input video frame; and adding the down-sampling information to the encoded data according to a processing range corresponding to the down-sampling information. The down-sampling information is capable of identifying at least one of a down-sampling proportion and a down-sampling method for the input video frame or identifying a rule for identifying the at least one of a down-sampling proportion and a down-sampling method.

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Shenzhen, China

Xunan Mao