公开(公告)号：US09854020B1

公开(公告)日：2017-12-26

申请号：US14622292

申请日：2015-02-13

申请人： Google Inc.

发明人： Sang-Uok Kum ,  Sam John ,  Thierry Foucu ,  Lei Yang ,  Alexander Jay Converse ,  Steve Benting

IPC分类号： H04N7/167 ,  H04N7/12 ,  H04L29/06 ,  H04N21/234 ,  H04N21/2343 ,  H04N21/2385 ,  H04N21/2662 ,  H04N21/845

CPC分类号： H04L65/604 ,  H04L65/4076 ,  H04L65/4084 ,  H04L65/4092 ,  H04L65/602 ,  H04L65/80 ,  H04N7/01 ,  H04N21/23418 ,  H04N21/23439 ,  H04N21/2385 ,  H04N21/2662 ,  H04N21/8456

摘要： A plurality of videos associated with a plurality of video resolutions may be received. A minimum bitrate may be identified for each of the video resolutions based on a first bitrate point associated with the videos where a quality of the videos at a first video resolution that is upscaled to a second video resolution is better than a quality of the videos at the second video resolution at bitrates below the first bitrate point. Furthermore, a maximum bitrate may be identified for each of the video resolutions based on a second bitrate point where the rate of change of the quality of the videos is below a threshold value. The identified minimum bitrates and the maximum bitrates may be assigned to the video resolutions.

公开(公告)号：US09813706B1

公开(公告)日：2017-11-07

申请号：US14093939

申请日：2013-12-02

申请人： Google Inc.

发明人： Yao-Chung Lin ,  Sam John ,  Thierry Foucu ,  Sasi Inguva

IPC分类号： H04N7/12 ,  H04N11/04 ,  H04N11/02 ,  H04N7/32 ,  H04N7/26 ,  H04N19/87 ,  H04N19/40 ,  H04N19/51

CPC分类号： H04N19/134 ,  H04N19/00472 ,  H04N19/00587 ,  H04N19/00921 ,  H04N19/142 ,  H04N19/40 ,  H04N19/87

摘要： A system to facilitate analyzing and/or processing video content using encoding logs is provided. The system includes a first analysis component, a second analysis component and a transcoding component. The first analysis component determines a first set of shot-change locations associated with a cut transition in a video sequence based on an encoding log associated with at least one previously encoded video frame. The second analysis component determines a second set of shot-change locations associated with a fading transition in the video sequence based on the encoding log associated with the at least one previously encoded video frame. The transcoding component processes the video sequence based on at least a portion of the first set of shot-change locations and the second set of shot-change locations.

公开(公告)号：US20150189222A1

公开(公告)日：2015-07-02

申请号：US14144331

申请日：2013-12-30

申请人： Google Inc.

发明人： Sam John ,  Sang-Uok Kum ,  Steve Benting ,  Thierry Foucu ,  Yao-Chung Lin

IPC分类号： H04N5/91

CPC分类号： H04N5/91 ,  H04N19/142 ,  H04N19/179 ,  H04N19/40 ,  H04N19/436 ,  H04N21/234309 ,  H04N21/44008 ,  H04N21/8456

摘要： A system and method are disclosed for transcoding a video clip. In one implementation, a computer system determines N frames at which to divide a video clip into N+1 consecutive chunks, where N is a positive integer, and where the frames are determined based on the image content of the video clip, a minimum chunk size, and a maximum chunk size. Each of the N+1 chunks is provided to a respective processor for transcoding, and a transcoded video clip is generated from the transcoded N+1 chunks.

摘要翻译： 公开了用于对视频剪辑进行代码转换的系统和方法。 在一个实现中，计算机系统确定将帧视频剪辑划分成N + 1个连续块的N个帧，其中N是正整数，并且其中基于视频剪辑的图像内容来确定帧，最小块 大小和最大块大小。 将N + 1个块中的每一个提供给相应的处理器进行代码转换，并从代码转换的N + 1块生成代码转换的视频片段。

公开(公告)号：US10771789B2

公开(公告)日：2020-09-08

申请号：US15600272

申请日：2017-05-19

申请人： Google Inc.

发明人： Sam John

IPC分类号： H03M1/78 ,  H04N19/14 ,  H04L12/24 ,  H04L29/06 ,  H04N19/40 ,  H04N19/109 ,  H04N19/11 ,  H04N19/112 ,  H04N19/12 ,  H04N19/152 ,  H04N19/169 ,  H04N19/137 ,  H04N19/194

摘要： Implementations disclose adaptive rate control technology that selects different encoders for different chunks of a media item based on the complexity of the individual chunks. A method includes accessing a media item comprising a first chunk and a second chunk; determining, by a processing device, a first media complexity measure for the first chunk and a second media complexity measure for the second chunk; selecting, by the processing device, a first encoder and a second encoder from a plurality of encoders, wherein the first encoder is selected based on the first media complexity measure of the first chunk and the second encoder is selected based on the second media complexity measure of the second chunk; and encoding the first chunk using the first encoder and encoding the second chunk using the second encoder.

公开(公告)号：US20180338146A1

公开(公告)日：2018-11-22

申请号：US15600272

申请日：2017-05-19

申请人： Google Inc.

发明人： Sam John

IPC分类号： H04N19/14 ,  H04L12/24 ,  H04L29/06 ,  H04N19/40 ,  H04N19/109 ,  H04N19/11 ,  H04N19/112

摘要： Implementations disclose adaptive rate control technology that selects different encoders for different chunks of a media item based on the complexity of the individual chunks. A method includes accessing a media item comprising a first chunk and a second chunk; determining, by a processing device, a first media complexity measure for the first chunk and a second media complexity measure for the second chunk; selecting, by the processing device, a first encoder and a second encoder from a plurality of encoders, wherein the first encoder is selected based on the first media complexity measure of the first chunk and the second encoder is selected based on the second media complexity measure of the second chunk; and encoding the first chunk using the first encoder and encoding the second chunk using the second encoder.