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1. 发明授权

US08379851B2 Optimized client side rate control and indexed file layout for streaming media 有权
标题翻译：针对流媒体优化客户端速率控制和索引文件布局
公开(公告)号：US08379851B2
公开(公告)日：2013-02-19
申请号：US12119364
申请日：2008-05-12
申请人： Sanjeev Mehrotra , Kishore Kotteri , Bharath Siravara , Thomas W. Holcomb , Hui Gao , Serge Smirnov
发明人： Sanjeev Mehrotra , Kishore Kotteri , Bharath Siravara , Thomas W. Holcomb , Hui Gao , Serge Smirnov
IPC分类号： H04N7/167 , G06F15/16
CPC分类号： H04L65/607 , H04L65/608 , H04N21/00
摘要： An indexed file layout, comprising index information, is defined for segmented streaming of multimedia content. The index information can comprise program description information and streaming segment index information. In addition, the layout can comprise files containing streaming segments of the program, where the streaming segments are each encoded at one or more bitrates independently of other streaming segments of the program. The layout supports client switching between different bitrates at segment boundaries. Optimized client-side rate control of streaming content can be provided by defining a plurality of states, selecting available paths based on constraint conditions, and selecting a best path through the states (e.g., based on a distortion measure). In one client-side rate control solution states correspond to a specific bitrate of a specific streaming segment, and in another client-side rate control solution states correspond to a measure of client buffer fullness.
摘要翻译：包括索引信息的索引文件布局被定义用于多媒体内容的分段流。索引信息可以包括节目描述信息和流分片索引信息。此外，布局可以包括包含程序的流片段的文件，其中流片段每个以独立于节目的其他流片段的一个或多个比特率进行编码。该布局支持在段边界处的不同比特率之间的客户端切换。可以通过定义多个状态，基于约束条件选择可用路径以及选择通过状态的最佳路径（例如，基于失真度量）来提供流内容的优化客户端速率控制。在一个客户端速率控制解决方案中，状态对应于特定流分段的特定比特率，并且在另一客户端速率控制解决方案状态对应于客户端缓冲区充满度的度量。

2. 发明申请

US20090282162A1 OPTIMIZED CLIENT SIDE RATE CONTROL AND INDEXED FILE LAYOUT FOR STREAMING MEDIA 有权
标题翻译：优化的客户端速率控制和用于流媒体的索引文件布局
公开(公告)号：US20090282162A1
公开(公告)日：2009-11-12
申请号：US12119364
申请日：2008-05-12
申请人： Sanjeev Mehrotra , Kishore Kotteri , Bharath Siravara , Thomas W. Holcomb , Hui Gao , Serge Smirnov
发明人： Sanjeev Mehrotra , Kishore Kotteri , Bharath Siravara , Thomas W. Holcomb , Hui Gao , Serge Smirnov
IPC分类号： G06F15/173
CPC分类号： H04L65/607 , H04L65/608 , H04N21/00
摘要： An indexed file layout, comprising index information, is defined for segmented streaming of multimedia content. The index information can comprise program description information and streaming segment index information. In addition, the layout can comprise files containing streaming segments of the program, where the streaming segments are each encoded at one or more bitrates independently of other streaming segments of the program. The layout supports client switching between different bitrates at segment boundaries. Optimized client-side rate control of streaming content can be provided by defining a plurality of states, selecting available paths based on constraint conditions, and selecting a best path through the states (e.g., based on a distortion measure). In one client-side rate control solution states correspond to a specific bitrate of a specific streaming segment, and in another client-side rate control solution states correspond to a measure of client buffer fullness.
摘要翻译：包括索引信息的索引文件布局被定义用于多媒体内容的分段流。索引信息可以包括节目描述信息和流分片索引信息。此外，布局可以包括包含程序的流片段的文件，其中流片段每个以独立于节目的其他流片段的一个或多个比特率进行编码。该布局支持在段边界处的不同比特率之间的客户端切换。可以通过定义多个状态，基于约束条件选择可用路径以及选择通过状态的最佳路径（例如，基于失真度量）来提供流内容的优化的客户端速率控制。在一个客户端速率控制解决方案中，状态对应于特定流分段的特定比特率，并且在另一客户端速率控制解决方案状态对应于客户端缓冲区充满度的度量。

3. 发明申请

US20090279605A1 ENCODING STREAMING MEDIA AS A HIGH BIT RATE LAYER, A LOW BIT RATE LAYER, AND ONE OR MORE INTERMEDIATE BIT RATE LAYERS 有权
标题翻译：编码流媒体作为高比特率层，低比特率层，以及一个或多个中间比特速率层
公开(公告)号：US20090279605A1
公开(公告)日：2009-11-12
申请号：US12116878
申请日：2008-05-07
申请人： Thomas W. Holcomb , Sanjeev Mehrotra , Serge Smirnov , Bharath Siravara
发明人： Thomas W. Holcomb , Sanjeev Mehrotra , Serge Smirnov , Bharath Siravara
IPC分类号： H04N7/26
CPC分类号： H04N19/34 , H04N19/114 , H04N19/115 , H04N19/124 , H04N19/14 , H04N19/147 , H04N19/164 , H04N19/166 , H04N19/179 , H04N19/187
摘要： A method of encoding an input video stream comprising a video component and an audio component is disclosed. The input video stream is split into a plurality of segments, each comprising a plurality of frames. Each of the segments is encoded as a low bit rate layer, a high bit rate layer, and one or more intermediate bit rate layers. The bit rate of the low bit rate layer is selected such that a network streaming the segment will always be able to stream the segment encoded as the low bit rate layer. The bit rate of the high bit rate layer is selected such that the segment is able to be decoded and played back at or above a quality threshold. The bit rates of the intermediate bit rate layers are produced by applying a bit rate factor to another bit rate.
摘要翻译：公开了一种编码包括视频分量和音频分量的输入视频流的方法。输入视频流被分割成多个段，每个段包括多个帧。每个段被编码为低比特率层，高比特率层和一个或多个中间比特率层。选择低比特率层的比特率，使得流分段的网络将总是能够将编码为低比特率层的段流传输。选择高比特率层的比特率使得该片段能够在质量阈值以上或高于质量阈值时被解码和回放。中间比特率层的比特率通过将比特率因子应用于另一个比特率来产生。

4. 发明授权

US08325800B2 Encoding streaming media as a high bit rate layer, a low bit rate layer, and one or more intermediate bit rate layers 有权
标题翻译：将流媒体编码为高比特率层，低比特率层和一个或多个中间比特率层
公开(公告)号：US08325800B2
公开(公告)日：2012-12-04
申请号：US12116878
申请日：2008-05-07
申请人： Thomas W. Holcomb , Sanjeev Mehrotra , Serge Smirnov , Bharath Siravara
发明人： Thomas W. Holcomb , Sanjeev Mehrotra , Serge Smirnov , Bharath Siravara
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/34 , H04N19/114 , H04N19/115 , H04N19/124 , H04N19/14 , H04N19/147 , H04N19/164 , H04N19/166 , H04N19/179 , H04N19/187
摘要： A method of encoding an input video stream comprising a video component and an audio component is disclosed. The input video stream is split into a plurality of segments, each comprising a plurality of frames. Each of the segments is encoded as a low bit rate layer, a high bit rate layer, and one or more intermediate bit rate layers. The bit rate of the low bit rate layer is selected such that a network streaming the segment will always be able to stream the segment encoded as the low bit rate layer. The bit rate of the high bit rate layer is selected such that the segment is able to be decoded and played back at or above a quality threshold. The bit rates of the intermediate bit rate layers are produced by applying a bit rate factor to another bit rate.
摘要翻译：公开了一种编码包括视频分量和音频分量的输入视频流的方法。输入视频流被分割成多个段，每个段包括多个帧。每个段被编码为低比特率层，高比特率层和一个或多个中间比特率层。选择低比特率层的比特率，使得流分段的网络将总是能够将编码为低比特率层的段流传输。选择高比特率层的比特率使得该片段能够在质量阈值以上或高于质量阈值时被解码和回放。中间比特率层的比特率通过将比特率因子应用于另一个比特率来产生。

5. 发明申请

US20100189183A1 MULTIPLE BIT RATE VIDEO ENCODING USING VARIABLE BIT RATE AND DYNAMIC RESOLUTION FOR ADAPTIVE VIDEO STREAMING 有权
标题翻译：使用可变位速率和动态分辨率进行自适应视频流的多位速率视频编码
公开(公告)号：US20100189183A1
公开(公告)日：2010-07-29
申请号：US12362420
申请日：2009-01-29
申请人： Chuang Gu , Chun-Wei Chan , William Chen , Stacey Spears , Thomas W. Holcomb , Chih-Lung Lin , Sanjeev Mehrotra
发明人： Chuang Gu , Chun-Wei Chan , William Chen , Stacey Spears , Thomas W. Holcomb , Chih-Lung Lin , Sanjeev Mehrotra
IPC分类号： H04N7/26
CPC分类号： H04N21/4621 , H04N19/124 , H04N19/14 , H04N19/149 , H04N19/177 , H04N19/61 , H04N19/85 , H04N21/23439 , H04N21/6373 , H04N21/8456
摘要： A video encoding system encodes video streams for multiple bit rate video streaming using an approach that permits the encoded bit rate to vary subject to a peak bit rate and average bit rate constraints for higher quality streams, while a bottom bit rate stream is encoded to achieve a constant chunk rate. The video encoding system also dynamically decides an encoding resolution for segments of the multiple bit rate video streams that varies with video complexity so as to achieve a better visual experience for multiple bit rate streaming.
摘要翻译：视频编码系统使用允许编码比特率根据高质量流的峰比特率和平均比特率约束而变化的方法对多个比特率视频流的视频流进行编码，而底部比特率流被编码以实现恒定的块率。视频编码系统还动态地决定了随着视频复杂度而变化的多个比特率视频流的段的编码分辨率，从而为多个比特率流实现更好的视觉体验。

6. 发明授权

US08396114B2 Multiple bit rate video encoding using variable bit rate and dynamic resolution for adaptive video streaming 有权
标题翻译：使用可变比特率和自适应视频流的动态分辨率的多比特率视频编码
公开(公告)号：US08396114B2
公开(公告)日：2013-03-12
申请号：US12362420
申请日：2009-01-29
申请人： Chuang Gu , Chun-Wei Chan , William Chen , Stacey Spears , Thomas W. Holcomb , Chih-Lung Lin , Sanjeev Mehrotra
发明人： Chuang Gu , Chun-Wei Chan , William Chen , Stacey Spears , Thomas W. Holcomb , Chih-Lung Lin , Sanjeev Mehrotra
IPC分类号： H04N7/12 , G06K9/36 , G06F11/00
CPC分类号： H04N21/4621 , H04N19/124 , H04N19/14 , H04N19/149 , H04N19/177 , H04N19/61 , H04N19/85 , H04N21/23439 , H04N21/6373 , H04N21/8456
摘要： A video encoding system encodes video streams for multiple bit rate video streaming using an approach that permits the encoded bit rate to vary subject to a peak bit rate and average bit rate constraints for higher quality streams, while a bottom bit rate stream is encoded to achieve a constant chunk rate. The video encoding system also dynamically decides an encoding resolution for segments of the multiple bit rate video streams that varies with video complexity so as to achieve a better visual experience for multiple bit rate streaming.
摘要翻译：视频编码系统使用允许编码比特率根据高质量流的峰比特率和平均比特率约束而变化的方法对多个比特率视频流的视频流进行编码，而底部比特率流被编码以实现恒定的块率。视频编码系统还动态地决定了随着视频复杂度而变化的多个比特率视频流的段的编码分辨率，从而为多个比特率流实现更好的视觉体验。

7. 发明授权

US08687697B2 Coding of motion vector information 有权
公开(公告)号：US08687697B2
公开(公告)日：2014-04-01
申请号：US13455094
申请日：2012-04-24
申请人： Sridhar Srinivasan , Pohsiang Hsu , Thomas W. Holcomb , Kunal Mukerjee , Bruce Chih-Lung Lin
发明人： Sridhar Srinivasan , Pohsiang Hsu , Thomas W. Holcomb , Kunal Mukerjee , Bruce Chih-Lung Lin
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , G06K9/36 , G06K9/46
CPC分类号： H04N19/137 , G06K9/36 , G06K9/46 , H04N7/52 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/51 , H04N19/513 , H04N19/61 , H04N19/63 , H04N19/91
摘要： Techniques and tools for encoding and decoding motion vector information for video images are described. For example, a video encoder yields an extended motion vector code by jointly coding, for a set of pixels, a switch code, motion vector information, and a terminal symbol indicating whether subsequent data is encoded for the set of pixels. In another aspect, an encoder/decoder selects motion vector predictors for macroblocks. In another aspect, a video encoder/decoder uses hybrid motion vector prediction. In another aspect, a video encoder/decoder signals a motion vector mode for a predicted image. In another aspect, a video decoder decodes a set of pixels by receiving an extended motion vector code, which reflects joint encoding of motion information together with intra/inter-coding information and a terminal symbol. The decoder determines whether subsequent data exists for the set of pixels based on e.g., the terminal symbol.

8. 发明授权

US08625669B2 Predicting motion vectors for fields of forward-predicted interlaced video frames 有权
标题翻译：预测前向预测隔行视频帧的场的运动矢量
公开(公告)号：US08625669B2
公开(公告)日：2014-01-07
申请号：US12401831
申请日：2009-03-11
申请人： Thomas W. Holcomb
发明人： Thomas W. Holcomb
IPC分类号： H04N7/12
CPC分类号： H04N19/16 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86 , H04N19/93
摘要： Techniques and tools for encoding and decoding predicted images in interlaced video are described. For example, a video encoder or decoder computes a motion vector predictor for a motion vector for a portion (e.g., a block or macroblock) of an interlaced P-field, including selecting between using a same polarity or opposite polarity motion vector predictor for the portion. The encoder/decoder processes the motion vector based at least in part on the motion vector predictor computed for the motion vector. The processing can comprise computing a motion vector differential between the motion vector and the motion vector predictor during encoding and reconstructing the motion vector from a motion vector differential and the motion vector predictor during decoding. The selecting can be based at least in part on a count of opposite polarity motion vectors for a neighborhood around the portion and/or a count of same polarity motion vectors.
摘要翻译：描述了用于对隔行视频中的预测图像进行编码和解码的技术和工具。例如，视频编码器或解码器计算用于隔行P场的一部分（例如，块或宏块）的运动矢量的运动矢量预测器，包括在使用相同极性或相反极性的运动矢量预测器之间进行选择一部分。编码器/解码器至少部分地基于为运动矢量计算的运动矢量预测器来处理运动矢量。处理可以包括在编码期间计算运动矢量和运动矢量预测器之间的运动矢量差分，并且在解码期间重建来自运动矢量差分的运动矢量和运动矢量预测器。该选择可以至少部分地基于对于该部分周围的邻域的相反极性运动矢量的计数和/或相同极性运动矢量的计数。

9. 发明申请

US20120294355A1 VIDEO TRANSCODING WITH DYNAMICALLY MODIFIABLE SPATIAL RESOLUTION 有权
标题翻译：视频转换与动态可修改的空间分辨率
公开(公告)号：US20120294355A1
公开(公告)日：2012-11-22
申请号：US13109554
申请日：2011-05-17
申请人： Thomas W. Holcomb , Chih-Lung B. Lin
发明人： Thomas W. Holcomb , Chih-Lung B. Lin
IPC分类号： H04N7/26
CPC分类号： H04N19/40 , H04N19/132 , H04N19/14 , H04N19/15 , H04N19/157 , H04N19/172
摘要： An apparatus and method are disclosed for transcoding a compressed video stream. In one embodiment, a compressed video stream is decoded. A spatial resolution of the decoded video stream can then be dynamically modified. The video stream with the modified spatial resolution can be re-encoded and transmitted over a network for display on a client device. The spatial resolution can be dynamically modified based on a variety of techniques. For example, a current bitrate and quantization parameters associated with the frames can be used to determine the spatial resolution. Alternatively, the spatial and/or temporal complexity can be used to modify spatial resolution.
摘要翻译：公开了一种用于对压缩视频流进行代码转换的装置和方法。在一个实施例中，对压缩视频流进行解码。然后可以动态地修改解码的视频流的空间分辨率。具有修改的空间分辨率的视频流可以被重新编码并通过网络发送以在客户端设备上显示。可以基于各种技术来动态修改空间分辨率。例如，可以使用与帧相关联的当前比特率和量化参数来确定空间分辨率。或者，可以使用空间和/或时间复杂度来修改空间分辨率。

10. 发明申请

US20120269266A1 REGIONS OF INTEREST FOR QUALITY ADJUSTMENTS 有权
标题翻译：质量调整区域
公开(公告)号：US20120269266A1
公开(公告)日：2012-10-25
申请号：US13539730
申请日：2012-07-02
申请人： Chih-Lung Lin , Ming-Chieh Lee , Stacey Spears , Philip Lawrence Garrett , Anil Madhav Murching , Amy Jennifer Beauford , Thomas W. Holcomb , Xiping Zuo
发明人： Chih-Lung Lin , Ming-Chieh Lee , Stacey Spears , Philip Lawrence Garrett , Anil Madhav Murching , Amy Jennifer Beauford , Thomas W. Holcomb , Xiping Zuo
IPC分类号： H04N7/26
CPC分类号： H04N19/17 , H04N19/124 , H04N19/147 , H04N19/162 , H04N19/61
摘要： Quality settings established by an encoder are adjusted based on information associated with regions of interest (“ROIs”). For example, quantization step sizes can be reduced (to improve quality) or increased (to reduce bit rate). ROIs can be identified and quality settings can be adjusted based on input received from a user interface. An overlap setting can be determined for a portion of a picture that corresponds to an ROI overlap area. For example, an overlap setting is chosen from step sizes corresponding to a first overlapping ROI and a second overlapping ROI, or from relative reductions in step size corresponding to the first ROI and the second ROI. ROIs can be parameterized by information (e.g., using data structures) that indicates spatial dimensions of the ROIs and quality adjustment information (e.g., dead zone information, step size information, and quantization mode information).
摘要翻译：基于与兴趣区域（ROI）相关联的信息来调整由编码器建立的质量设置。例如，可以减小量化步长（提高质量）或增加（以减少比特率）。可以识别ROI，并且可以基于从用户界面接收的输入来调整质量设置。可以针对对应于ROI重叠区域的图像的一部分来确定重叠设置。例如，从与第一重叠ROI和第二重叠ROI相对应的步长尺寸或从与第一ROI和第二ROI对应的步长的相对减小中选择重叠设置。可以通过指示ROI的空间维度和质量调整信息（例如，死区信息，步长信息和量化模式信息）的信息（例如，使用数据结构）对ROI进行参数化。

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