公开(公告)号：US09854020B1

公开(公告)日：2017-12-26

申请号：US14622292

申请日：2015-02-13

Applicant: Google Inc.

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

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

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

Abstract: 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：US09225983B2

公开(公告)日：2015-12-29

申请号：US14516349

申请日：2014-10-16

Applicant: Google Inc.

Inventor： Lei Yang ,  Debargha Mukherjee

IPC: H04N19/105 ,  H04N19/169 ,  H04N19/15 ,  H04N19/115 ,  H04N19/152 ,  H04N19/154 ,  H04N19/192 ,  H04N19/40 ,  H04N19/107 ,  H04N19/147 ,  H04N19/156 ,  H04N19/194

CPC classification number: H04N19/188 ,  H04N19/105 ,  H04N19/107 ,  H04N19/115 ,  H04N19/147 ,  H04N19/15 ,  H04N19/152 ,  H04N19/154 ,  H04N19/156 ,  H04N19/1887 ,  H04N19/192 ,  H04N19/194 ,  H04N19/40

Abstract: A system and method provide a video description length (VDL) guided constant quality video encoding strategy with bitrate constraint and a video coding system for optimizing encoding bitrate, distortion and complexity of an input video. The method obtains an overall VDL, temporal VDL and spatial VDL of the input video and compares the overall VDL, temporal VDL and spatial VDL of the input video with a reference VDL, temporal VDL and spatial VDL. Based on the comparison, the method adjusts the encoding bitrate, the overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video and encodes the input video with the adjusted encoding bitrate, overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video.

Abstract translation: 系统和方法提供具有比特率约束的视频描述长度（VDL）导向恒定质量视频编码策略和用于优化输入视频的编码比特率，失真和复杂度的视频编码系统。 该方法获得输入视频的整体VDL，时间VDL和空间VDL，并将输入视频的整体VDL，时间VDL和空间VDL与参考VDL，时间VDL和空间VDL进行比较。 基于比较，该方法调整输入视频的编码比特率，整体编码复杂度，时间编码复杂度和空间编码复杂度，并对经调整的编码比特率，整体编码复杂度，时间编码复杂度和空间编码复杂度的输入视频进行编码 的输入视频。

公开(公告)号：US09288510B1

公开(公告)日：2016-03-15

申请号：US14285546

申请日：2014-05-22

Applicant: Google Inc.

Inventor： Lei Yang ,  Prasanna Meda ,  Thierry Foucu ,  Sang-Uok Kum ,  Hugh Pierre Denman ,  Steve Benting

IPC: H04N7/173 ,  H04N21/2343 ,  H04N19/40 ,  H04N19/51 ,  H04N19/124 ,  H04N19/593 ,  H04N19/176

CPC classification number: H04N21/234309 ,  H04N19/124 ,  H04N19/176 ,  H04N19/40 ,  H04N19/513 ,  H04N19/593 ,  H04N19/70

Abstract: Adaptive video transcoding based on parallel chunked log analysis is described. The adaptive video transcoding method comprises receiving an intermediate video stream generated from an intermediate transcoding. The method also receives an intermediate transcoding log stream associated with the intermediate video stream. The method partitions the intermediate video stream into a plurality of video chunks, where each video chunk corresponding to a portion of video data of the video stream. The method further generates video chunk statistics for each of the video chunks using the intermediate transcoding log stream and transcoding parameters for each of the video chunks based on the generated video chunk statistics. The method transcodes each of the video chunks to a target format in parallel based on the generated transcoding parameters. The method assembles the transcoded video chunks into a target video stream in the target format.

Abstract translation: 描述了基于并行分块日志分析的自适应视频转码。 自适应视频代码转换方法包括接收从中间代码转换产生的中间视频流。 该方法还接收与中间视频流相关联的中间代码转换日志流。 该方法将中间视频流分割成多个视频块，其中每个视频块对应于视频流的视频数据的一部分。 该方法还使用中间代码转换日志流和基于生成的视频块统计的每个视频块的代码转换参数来生成每个视频块的视频块统计。 该方法基于所生成的代码转换参数将每个视频块转码为目标格式。 该方法将经转码的视频块组装成目标格式的目标视频流。

公开(公告)号：US20150036740A1

公开(公告)日：2015-02-05

申请号：US14516349

申请日：2014-10-16

Applicant: Google Inc.

Inventor： Lei Yang ,  Debargha Mukherjee

IPC: H04N19/169

CPC classification number: H04N19/188 ,  H04N19/105 ,  H04N19/107 ,  H04N19/115 ,  H04N19/147 ,  H04N19/15 ,  H04N19/152 ,  H04N19/154 ,  H04N19/156 ,  H04N19/1887 ,  H04N19/192 ,  H04N19/194 ,  H04N19/40

Abstract: A system and method provide a video description length (VDL) guided constant quality video encoding strategy with bitrate constraint and a video coding system for optimizing encoding bitrate, distortion and complexity of an input video. The method obtains an overall VDL, temporal VDL and spatial VDL of the input video and compares the overall VDL, temporal VDL and spatial VDL of the input video with a reference VDL, temporal VDL and spatial VDL. Based on the comparison, the method adjusts the encoding bitrate, the overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video and encodes the input video with the adjusted encoding bitrate, overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video.

Abstract translation: 系统和方法提供具有比特率约束的视频描述长度（VDL）导向恒定质量视频编码策略和用于优化输入视频的编码比特率，失真和复杂度的视频编码系统。 该方法获得输入视频的整体VDL，时间VDL和空间VDL，并将输入视频的整体VDL，时间VDL和空间VDL与参考VDL，时间VDL和空间VDL进行比较。 基于比较，该方法调整输入视频的编码比特率，整体编码复杂度，时间编码复杂度和空间编码复杂度，并对经调整的编码比特率，整体编码复杂度，时间编码复杂度和空间编码复杂度的输入视频进行编码 的输入视频。

公开(公告)号：US09510028B2

公开(公告)日：2016-11-29

申请号：US15016035

申请日：2016-02-04

Applicant: Google Inc.

Inventor： Lei Yang ,  Prasanna Meda ,  Thierry Foucu ,  Sang-Uok Kum ,  Hugh Pierre Denman ,  Steve Benting

IPC: H04N7/173 ,  H04N21/2343 ,  H04N19/40 ,  H04N19/51 ,  H04N19/124 ,  H04N19/593 ,  H04N19/176 ,  H04N19/513 ,  H04N19/70

CPC classification number: H04N21/234309 ,  H04N19/124 ,  H04N19/176 ,  H04N19/40 ,  H04N19/513 ,  H04N19/593 ,  H04N19/70

Abstract: Adaptive video transcoding based on parallel chunked log analysis is described. The adaptive video transcoding method comprises receiving an intermediate video stream generated from an intermediate transcoding. The method also receives an intermediate transcoding log stream associated with the intermediate video stream. The method partitions the intermediate video stream into a plurality of video chunks, where each video chunk corresponding to a portion of video data of the video stream. The method further generates video chunk statistics for each of the video chunks using the intermediate transcoding log stream and transcoding parameters for each of the video chunks based on the generated video chunk statistics. The method transcodes each of the video chunks to a target format in parallel based on the generated transcoding parameters. The method assembles the transcoded video chunks into a target video stream in the target format.

公开(公告)号：US20160156948A1

公开(公告)日：2016-06-02

申请号：US15016035

申请日：2016-02-04

Applicant: Google Inc.

Inventor： Lei Yang ,  Prasanna Meda ,  Thierry Foucu ,  Sang-Uok Kum ,  Hugh Pierre Denman ,  Steve Benting

IPC: H04N21/2343 ,  H04N19/513 ,  H04N19/70 ,  H04N19/593 ,  H04N19/176 ,  H04N19/40 ,  H04N19/124

CPC classification number: H04N21/234309 ,  H04N19/124 ,  H04N19/176 ,  H04N19/40 ,  H04N19/513 ,  H04N19/593 ,  H04N19/70

Abstract: Adaptive video transcoding based on parallel chunked log analysis is described. The adaptive video transcoding method comprises receiving an intermediate video stream generated from an intermediate transcoding. The method also receives an intermediate transcoding log stream associated with the intermediate video stream. The method partitions the intermediate video stream into a plurality of video chunks, where each video chunk corresponding to a portion of video data of the video stream. The method further generates video chunk statistics for each of the video chunks using the intermediate transcoding log stream and transcoding parameters for each of the video chunks based on the generated video chunk statistics. The method transcodes each of the video chunks to a target format in parallel based on the generated transcoding parameters. The method assembles the transcoded video chunks into a target video stream in the target format.

Abstract translation: 描述了基于并行分块日志分析的自适应视频转码。 自适应视频代码转换方法包括接收从中间代码转换产生的中间视频流。 该方法还接收与中间视频流相关联的中间代码转换日志流。 该方法将中间视频流分割成多个视频块，其中每个视频块对应于视频流的视频数据的一部分。 该方法还使用中间代码转换日志流和基于生成的视频块统计的每个视频块的代码转换参数来生成每个视频块的视频块统计。 该方法基于所生成的代码转换参数将每个视频块转码为目标格式。 该方法将经转码的视频块组装成目标格式的目标视频流。