公开(公告)号：EP3606067A1

公开(公告)日：2020-02-05

申请号：EP18772159.2

申请日：2018-03-09

申请人： Tencent Technology (Shenzhen) Company Limited

发明人： MAO, Xunan ,  GAO, Xinwei ,  GUO, Licai ,  SHI, Yongfang ,  GAO, Anlin ,  DENG, Haibo ,  GU, Chenchen ,  LV, Jing

IPC分类号： H04N19/103 ,  H04N19/179 ,  H04N19/132

摘要： This application relates to a video encoding and decoding method, a computer device, and storage media, including: obtaining a to-be-coded video frame, determining a current encoding mode according to current coding information and/or image feature information, the optional encoding modes including a full resolution mode and a downsampling mode; processing the to-be-coded video frame according to the current encoding mode to obtain a current coded video frame, downsampling the to-be-coded video frame to obtain the current coded video frame when the current encoding mode is the downsampling mode, determining the to-be-coded video frame as the current coded video frame when the current encoding mode is the full resolution mode, obtaining a current reference frame corresponding to the current coded video frame when the current coded video frame is an inter frame, obtaining a corresponding processing reference frame according to resolution values of the current reference frame and the current coded video frame, and encoding the current coded video frame according to the processing reference frame to obtain coded data.

公开(公告)号：EP3651464A1

公开(公告)日：2020-05-13

申请号：EP18827343.7

申请日：2018-05-14

申请人： Tencent Technology (Shenzhen) Company Limited

发明人： MAO, Xunan ,  GUO, Yaoyao ,  GU, Chenchen ,  GAO, Xinwei ,  GUO, Licai ,  SHI, Yongfang ,  GAO, Anlin ,  DENG, Haibo ,  LV, Jing

IPC分类号： H04N19/146 ,  H04N19/114

摘要： Embodiments of this application disclose a data coding method and apparatus, a storage device, and a terminal device that are applied to the field of information processing technologies. The method includes: determining, by a data transmitting-end, a length of a first bit-rate-control-unit data frame according to an actual requirement, determining a first target bit rate of a first bit-rate-control-unit, then adjusting the first target bit rate according to a first difference value between a real bit rate of a data frame of a previous bit-rate-control-unit (that is, a second bit-rate-control-unit) and a second target bit rate of the data frame of the previous bit-rate-control-unit, and coding the first bit-rate-control-unit data frame according to the adjusted first target bit rate. According to the embodiments of this application, the length of the first bit-rate-control-unit data frame can be flexibly set, and the first target bit rate is adjusted according to an actual coding case of the previous bit-rate-control-unit data frame, so that after the first bit-rate-control-unit is coded according to the adjusted first target bit rate, a requirement for a stable bit rate in any duration, particularly, in a short time, is satisfied.

公开(公告)号：EP3595305A1

公开(公告)日：2020-01-15

申请号：EP18763703.8

申请日：2018-03-05

申请人： Tencent Technology (Shenzhen) Company Limited

发明人： MAO, Xunan ,  GUO, Yaoyao ,  GUO, Licai ,  SHI, Yongfang ,  GAO, Anlin ,  DENG, Haibo ,  GU, Chenchen ,  LV, Jing

IPC分类号： H04N19/146 ,  H04N19/177 ,  H04N19/11

摘要： This application provides an intra frame bit rate allocation method and apparatus, a computer device, and a storage medium. The method includes: pre-encoding a current frame of picture when the current frame of picture is an intra frame in a specified frame sequence, the pre-encoding including encoding the current frame of picture into an intra frame; calculating a corresponding pre-encoding cost; and allocating an intra frame bit rate according to the pre-encoding cost, the allocated intra frame bit rate being positively correlated with the pre-encoding cost. The pre-encoding cost is obtained by pre-encoding the current frame of picture, and the pre-encoding includes encoding the current frame of picture into the intra frame. If the pre-encoding cost is high, it indicates that a bit rate required by the intra frame for reaching same video quality is high. Therefore, the intra frame bit rate allocated according to the pre-encoding cost can reflect an actual scenario of a picture of the current frame of picture, and accuracy of the allocated intra frame bit rate is high, thereby improving picture quality of video encoding.

公开(公告)号：EP3787291A1

公开(公告)日：2021-03-03

申请号：EP19792389.9

申请日：2019-03-18

申请人： TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

发明人： MAO, Xunan ,  GUO, Licai ,  SHI, Yongfang ,  GAO, Anlin ,  GAO, Xinwei ,  ZHANG, Tao ,  DENG, Haibo ,  GU, Chenchen ,  LV, Jing

IPC分类号： H04N19/124 ,  H04N19/59 ,  H04N19/146 ,  H04N19/147

摘要： Embodiments of this disclosure disclose a video encoding method, storage medium, and terminal. The method includes: obtaining a video to be encoded, the video including at least two video frames arranged in sequence; calculating, for an i th video frame in the at least two video frames, a quantization parameter and a quantization parameter threshold of the i th video frame, i being a positive integer greater than or equal to 2; determining a coding resolution of the i th video frame according to the quantization parameter and the quantization parameter threshold, the coding resolution being a first coding resolution or a second coding resolution, the first coding resolution being a resolution when the i th video frame is sampled, and the second coding resolution being a resolution when the i th video frame is downsampled; and encoding the i th video frame at the coding resolution, obtaining an encoded video, and transmitting the encoded video to a server. According to the embodiments of this disclosure, flexibility of a coding mode is improved, and precision of the determined coding resolution is also improved.

公开(公告)号：EP3595304A1

公开(公告)日：2020-01-15

申请号：EP18763053.8

申请日：2018-03-05

申请人： Tencent Technology (Shenzhen) Company Limited

发明人： MAO, Xunan ,  GU, Chenchen ,  SHI, Yongfang ,  GAO, Anlin

IPC分类号： H04N19/146 ,  H04N19/177 ,  H04N19/176

摘要： Embodiments of the present invention disclose a bit rate allocation method and device, and a storage medium. The method includes the following steps: obtaining an I-frame of a to-be-encoded video, and obtaining bit rate characteristic parameters associated with the I-frame, where the bit rate characteristic parameters include: the number of video frames in a group of picture (GOP) in which the I-frame is located, the number of pixels of the I-frame, and a proportion of an intra prediction macroblock in a historical P-frame before the I-frame; and determining an allocated bit rate of the I-frame according to each bit rate characteristic parameter.

公开(公告)号：EP3484155A1

公开(公告)日：2019-05-15

申请号：EP17823673.3

申请日：2017-07-07

申请人： Tencent Technology (Shenzhen) Company Limited

发明人： SHI, Yongfang ,  GAO, Anlin ,  DAI, Chao ,  LV, Jing

IPC分类号： H04N19/31

摘要： Disclosed are a method and device for processing video data. The method comprises: an encoding end encoding acquired original video data according to Hierarchical P-frame Prediction (HPP) to obtain an HPP code stream; conducting redundant encoding on the HPP code stream according to forward error correction (FEC) encoding, wherein the number of redundant packets of each frame in the HPP code stream progressively decreases according to the time layer where each frame is located in the HPP in the order of lowest to highest; and finally sending each frame in the HPP code stream after the redundant encoding to a decoding end in sequence. The present application combines an HPP encoding structure and FEC redundant encoding, and adds a redundant packet to a HPP code stream encoded according to the HPP encoding structure. In this way, even though some packet loss occurs during data transmission, the decoding end can still perform lost packet recovery through the redundant packet, greatly improving the success rate of decoding, and reducing the stutter time of video.