-
1.发明授权公开(公告)号：US10735029B2
公开(公告)日：2020-08-04
申请号：US15955315
申请日：2018-04-17
Inventor： Yongfang Shi , Anlin Gao , Jing Lv , Jingchang Chen , Jian He , Chenchen Gu , Xunan Mao , Haibo Deng , Licai Guo , Chao Dai , Xun Zhang
IPC: H03M13/00 , H04L1/00 , H04N19/00 , H03M13/35 , H04N7/14 , H04N21/637 , H04N19/46 , H04N21/238 , H04N19/67 , H04L29/06 , H04N7/24 , H04N21/6375 , H04N19/172 , H04N19/115 , H04N19/166 , H04N19/169 , H03M13/15
Abstract: The application discloses video data redundancy control methods and apparatuses. Video packet redundancy control information is determined according to packet loss at a reception apparatus. The video packet redundancy control information is received from the reception apparatus. Video data is encoded according to the video packet redundancy control information to obtain encoded video data of a plurality of frames by a transmission apparatus. A frame-level redundancy budget is allocated for one of the plurality of frames according to the video packet redundancy control information. Further, the one of the plurality of frames is packetized according to the frame-level redundancy budget to generate a packetized frame. Redundancy coding is performed on the packetized frame to generate video packets including data packets and redundant packets for transmission to the reception apparatus.
-
公开(公告)号：US11025686B2
公开(公告)日：2021-06-01
申请号：US15870217
申请日：2018-01-12
Inventor： Jihao Wang , Jing Lv , Yongfang Shi , Yu Zhou , Jingchang Chen , Baojian Wang , Yongyu Lin , Jiakai Wang , Runjia Huang , Jiamin Chen , Jin Huang , Hongfa Qiu , Junshan Wang
IPC: G06F3/0482 , G06F3/0484 , H04L29/06 , H04L12/58 , H04N7/15 , H04M3/56 , H04M7/00 , G06Q50/00 , G06F3/0488 , G06T3/60
Abstract: The present disclosure provides a network call method, terminal, and server. The method includes: displaying a scenario interface for a social application group; displaying a first list of user identifiers when an instruction for initiating a specified call is received; determining, according to a selection operation in the first list of user identifiers, identifiers of second users; sending a network call request to a social application server, the network call request comprising an identifier of the first user logging in at the first terminal locally and the identifiers of the second users, so that the social application server creates a virtual group, and adds, to the virtual group, the first terminal and second terminals corresponding to the identifiers of the second users accepting call invitations; and performing a network call in a call interface for the virtual group.
-
公开(公告)号：US10951905B2
公开(公告)日：2021-03-16
申请号：US16436570
申请日：2019-06-10
Inventor： Xunan Mao , Haixu Han , Xinwei Gao , Chenchen Gu , Jian He , Jingchang Chen
IPC: H04N19/40 , H04N19/124 , H04N19/196 , H04N19/136 , H04N19/172
Abstract: A video transcoding method is described. A computer device obtains at least one initial quantization parameter used to encode at least one initial coding unit for generating an initial compressed video, and determines, according to the at least one initial quantization parameter, a current reference quantization parameter corresponding to a current coding unit in a current video frame that is generated by decoding the initial compressed video. The computer device determines an estimated quantization parameter for encoding the current coding unit, determines a first difference between the current reference quantization parameter and the estimated quantization parameter, and sets a target quantization parameter to be equal to or greater than the estimated quantization parameter according to the first difference. The computer device encodes the current coding unit according to the target quantization parameter.
-
Patent Agency Ranking
公开(公告)号：US10097821B2
公开(公告)日：2018-10-09
申请号：US14091305
申请日：2013-11-26
Inventor： Chenchen Gu , Xunan Mao , Jingchang Chen , Jing Lv , Ronggang Wang , Bocheng Xin , Wen Gao
IPC: H04N19/139 , H04N19/59 , H04N19/159 , H04N19/176 , H04N19/172 , H04N19/117 , H04N19/132 , H04N19/137 , H04N19/182
Abstract: The present invention provides a hybrid-resolution encoding and decoding method. The method includes performing full-resolution standard coding on an I frame that adopts only intra-frame coding in a video frame sequence, and performing frame reconstruction to obtain a reconstructed frame of the I frame; performing down-sampling on the reconstructed frame of the I frame to obtain a first sampling image of the reconstructed frame of the I frame; performing down-sampling on a non-I frame in the video frame sequence to obtain a second sampling image of the non-I frame; performing standard coding on the second sampling image of the non-I frame by using the first sampling image of the reconstructed frame of the I frame that corresponds to the non-I frame as a reference frame; and sending a video code stream that includes the full-resolution standard coded I frame and the standard coded non-I frame.
-
公开(公告)号：US09014261B2
公开(公告)日：2015-04-21
申请号：US14167820
申请日：2014-01-29
Inventor： Jun Liu , Jingchang Chen , Xinliang Wang
IPC: H04N7/12 , H04N19/61 , H04N19/40 , H04N21/854 , H04N19/172 , H04N19/176 , H04N19/44
CPC classification number: H04N19/61 , H04N19/172 , H04N19/176 , H04N19/40 , H04N19/44 , H04N21/85406
Abstract: The present invention discloses a method for media file compression, which includes: extracting the encoding parameters from an input media file, separating and decoding the audio and video stream from the input media file, and extracting an original audio stream and an original video stream; computing the transcoding parameters required for compression according to the encoding parameters; encoding the original audio stream to output a new compressed audio stream, and encoding the original video stream to output a new compressed video stream according to the transcoding parameters; synthesizing the new compressed audio stream and the new compressed video stream to create a new media file. The present invention also provides a system for media file compression. By means of the method and system of the present invention, users can realize simple and rapid compression for media files of various formats without understanding media expertise, and the storage space can be saved, so that it is convenient to carry, transfer and share the media files.
Abstract translation: 本发明公开了一种媒体文件压缩方法，包括：从输入媒体文件中提取编码参数，从输入媒体文件中分离和解码音视频流，提取原始音频流和原始视频流; 根据编码参数计算压缩所需的转码参数; 编码原始音频流以输出新的压缩音频流，并根据转码参数编码原始视频流以输出新的压缩视频流; 合成新的压缩音频流和新的压缩视频流以创建新的媒体文件。 本发明还提供了一种用于媒体文件压缩的系统。 通过本发明的方法和系统，用户可以在不了解媒体专业知识的情况下实现对各种格式的媒体文件的简单和快速的压缩，并且可以节省存储空间，从而便于携带，传输和共享 媒体文件
-
公开(公告)号：US20180234116A1
公开(公告)日：2018-08-16
申请号：US15955315
申请日：2018-04-17
Inventor： Yongfang SHI , Anlin Gao , Jing Lv , Jingchang Chen , Jian He , Chenchen Gu , Xunan Mao , Haibo Deng , Licai Guo , Chao Dai , Xun Zhang
Abstract: The application discloses video data redundancy control methods and apparatuses. Video packet redundancy control information is determined according to packet loss at a reception apparatus. The video packet redundancy control information is received from the reception apparatus. Video data is encoded according to the video packet redundancy control information to obtain encoded video data of a plurality of frames by a transmission apparatus. A frame-level redundancy budget is allocated for one of the plurality of frames according to the video packet redundancy control information. Further, the one of the plurality of frames is packetized according to the frame-level redundancy budget to generate a packetized frame. Redundancy coding is performed on the packetized frame to generate video packets including data packets and redundant packets for transmission to the reception apparatus.
-
公开(公告)号：US08989259B2
公开(公告)日：2015-03-24
申请号：US14167784
申请日：2014-01-29
Inventor： Jun Liu , Jingchang Chen , Xinliang Wang
IPC: H04N7/12 , H04N19/61 , H04N21/854 , H04N19/40 , H04N19/176 , H04N19/172 , H04N19/00
CPC classification number: H04N19/61 , H04N19/172 , H04N19/176 , H04N19/40 , H04N19/44 , H04N21/85406
Abstract: The present invention discloses a method for media file compression, which includes: extracting the encoding parameters from an input media file, separating and decoding the audio and video stream from the input media file, and extracting an original audio stream and an original video stream; computing the transcoding parameters required for compression according to the encoding parameters; encoding the original audio stream to output a new compressed audio stream, and encoding the original video stream to output a new compressed video stream according to the transcoding parameters; synthesizing the new compressed audio stream and the new compressed video stream to create a new media file. The present invention also provides a system for media file compression. By means of the method and system of the present invention, users can realize simple and rapid compression for media files of various formats without understanding media expertise, and the storage space can be saved, so that it is convenient to carry, transfer and share the media files.
-
公开(公告)号：US20140146870A1
公开(公告)日：2014-05-29
申请号：US14167784
申请日：2014-01-29
Inventor： Jun LIU , Jingchang Chen , Xinliang Wang
IPC: H04N19/40
CPC classification number: H04N19/61 , H04N19/172 , H04N19/176 , H04N19/40 , H04N19/44 , H04N21/85406
Abstract: The present invention discloses a method for media file compression, which includes: extracting the encoding parameters from an input media file, separating and decoding the audio and video stream from the input media file, and extracting an original audio stream and an original video stream; computing the transcoding parameters required for compression according to the encoding parameters; encoding the original audio stream to output a new compressed audio stream, and encoding the original video stream to output a new compressed video stream according to the transcoding parameters; synthesizing the new compressed audio stream and the new compressed video stream to create a new media file. The present invention also provides a system for media file compression. By means of the method and system of the present invention, users can realize simple and rapid compression for media files of various formats without understanding media expertise, and the storage space can be saved, so that it is convenient to carry, transfer and share the media files.
-
-
-
-
-
-
-
Search Results
8
records
(took 0.018 seconds)
