公开(公告)号：US09521354B2

公开(公告)日：2016-12-13

申请号：US14691534

申请日：2015-04-20

申请人： NETFLIX, INC.

发明人： Anthony Neal Park ,  Wei Wei

IPC分类号： H04N5/91 ,  H04N5/76 ,  H04N7/173 ,  H04N21/2343 ,  H04N21/439 ,  H04N21/44 ,  H04N21/442 ,  H04N21/845

CPC分类号： H04N21/2223 ,  H04N5/76 ,  H04N7/173 ,  H04N21/23406 ,  H04N21/23439 ,  H04N21/2387 ,  H04N21/4392 ,  H04N21/44004 ,  H04N21/44209 ,  H04N21/462 ,  H04N21/6125 ,  H04N21/6379 ,  H04N21/8456

摘要： One embodiment of the present invention sets forth a technique for adapting playback bit rate to available delivery bandwidth in a content delivery system comprising a content server and a content player. A content player periodically estimates whether a given playback bit rate can feasibly provide complete playback for a given title assuming currently available bandwidth. If playback becomes unfeasible at a current bit rate assuming currently available bandwidth, then the content player adapts the bit rate downward until a feasible bit rate is achieved. If playback is feasible using a higher bit rate, then the content player may adapt the bit rate upward.

公开(公告)号：US20160197985A1

公开(公告)日：2016-07-07

申请号：US15071079

申请日：2016-03-15

申请人： NETFLIX, Inc.

发明人： Mark WATSON ,  Bin WANG ,  Wei Wei

IPC分类号： H04L29/08

CPC分类号： H04L67/101 ,  H04L65/4084 ,  H04L65/80 ,  H04L67/1002 ,  H04L67/1004 ,  H04L67/1008 ,  H04L67/148

摘要： Techniques for optimizing a plurality of parallel network connections for a digital content stream through a network between a plurality of content servers and a content player. Embodiments determine an indication of network performance for each of the plurality of parallel network connections. Additionally, upon determining that a first one the plurality of parallel network connections is underperforming, based on whether the indication of network performance associated with the first parallel network connection satisfies a threshold level of performance, the first parallel network connection is dropped. Upon determining that a total throughput for the digital content stream is less than a minimum threshold of network performance, embodiments select a content server with which to establish a new parallel network connection, based on historical network performance data associated with the selected content server, and also establishing the new parallel network connection to the selected content server.

摘要翻译： 用于通过多个内容服务器和内容播放器之间的网络优化用于数字内容流的多个并行网络连接的技术。 实施例确定多个并行网络连接中的每一个的网络性能的指示。 另外，在确定多个并行网络连接中的第一个并行网络连接是否表现不佳时，基于与第一并行网络连接相关联的网络性能的指示是否满足阈值性能水平，第一并联网络连接被丢弃。 在确定数字内容流的总吞吐量小于网络性能的最小阈值的情况下，实施例基于与所选择的内容服务器相关联的历史网络性能数据选择与其建立新的并行网络连接的内容服务器，以及 还建立到所选择的内容服务器的新的并行网络连接。

公开(公告)号：US09319458B2

公开(公告)日：2016-04-19

申请号：US13735827

申请日：2013-01-07

申请人： Netflix, Inc.

发明人： Mark Watson ,  Wei Wei

IPC分类号： G06F15/16 ,  H04L29/08 ,  H04L29/06

CPC分类号： H04L65/604 ,  H04L65/4092 ,  H04L65/80 ,  H04L67/1002

摘要： In an embodiment, a method comprises receiving a first data streamed from a first server computer at a first site; collecting a first throughput data for the first site based, at least in part, on a first throughput of the first data streamed from the first server computer; receiving a second data streamed from a second server computer at a second site; collecting a second throughput data for the second site based, at least in part, on a second throughput of the second data streamed from the second server computer; switching from the second server computer at the second site, to a third server computer at the first site, based, at least in part, on a comparison between the first throughput data and the second throughput data; wherein the method is performed by one or more special-purpose computing devices.

摘要翻译： 在一个实施例中，一种方法包括：接收在第一站点从第一服务器计算机流传输的第一数据; 至少部分地基于从第一服务器计算机流传输的第一数据的第一吞吐量来收集第一站点的第一吞吐量数据; 在第二站点接收从第二服务器计算机流传输的第二数据; 至少部分地基于从第二服务器计算机流传输的第二数据的第二吞吐量来收集第二站点的第二吞吐量数据; 至少部分地基于第一吞吐量数据和第二吞吐量数据之间的比较，将第二站点处的第二服务器计算机切换到第一站点处的第三服务器计算机; 其中所述方法由一个或多个专用计算设备执行。

公开(公告)号：US20140195646A1

公开(公告)日：2014-07-10

申请号：US13735827

申请日：2013-01-07

申请人： Netflix, Inc.

发明人： Mark Watson ,  Wei Wei

IPC分类号： H04L29/06

CPC分类号： H04L65/604 ,  H04L65/4092 ,  H04L65/80 ,  H04L67/1002

摘要： In an embodiment, a method comprises receiving a first data streamed from a first server computer at a first site; collecting a first throughput data for the first site based, at least in part, on a first throughput of the first data streamed from the first server computer; receiving a second data streamed from a second server computer at a second site; collecting a second throughput data for the second site based, at least in part, on a second throughput of the second data streamed from the second server computer; switching from the second server computer at the second site, to a third server computer at the first site, based, at least in part, on a comparison between the first throughput data and the second throughput data; wherein the method is performed by one or more special-purpose computing devices.

摘要翻译： 在一个实施例中，一种方法包括：接收在第一站点从第一服务器计算机流传输的第一数据; 至少部分地基于从第一服务器计算机流传输的第一数据的第一吞吐量来收集第一站点的第一吞吐量数据; 在第二站点接收从第二服务器计算机流传输的第二数据; 至少部分地基于从第二服务器计算机流传输的第二数据的第二吞吐量来收集第二站点的第二吞吐量数据; 至少部分地基于第一吞吐量数据和第二吞吐量数据之间的比较，将第二站点处的第二服务器计算机切换到第一站点处的第三服务器计算机; 其中所述方法由一个或多个专用计算设备执行。

公开(公告)号：US11349699B2

公开(公告)日：2022-05-31

申请号：US13838059

申请日：2013-03-15

申请人： NETFLIX, Inc

发明人： Mark Watson ,  Anthony Neal Park ,  Wei Wei

IPC分类号： H04L29/06 ,  G06F21/10 ,  H04L65/60

摘要： Techniques are disclosed for improving user experience of multimedia streaming over computer networks. For example, a method for presenting multimedia content may generally include receiving a request to stream a media title. In response to the request, unencrypted content for the media title is streamed to a client. While streaming the unencrypted content, a digital rights management (DRM) license to access encrypted content for the media title is requested. After receiving the DRM license, the client switches from streaming the unencrypted content for the media title to streaming encrypted content for the media title. The switching from streaming the unencrypted content to streaming the encrypted content does not interrupt playback of the media title.

公开(公告)号：US10200436B2

公开(公告)日：2019-02-05

申请号：US15333125

申请日：2016-10-24

申请人： NETFLIX, INC.

发明人： John Funge ,  Mark Watson ,  Wei Wei ,  David Chen

IPC分类号： H04L29/06 ,  H04N21/442 ,  H04L12/26 ,  H04L29/08

摘要： Techniques are disclosed for representing a user quality of experience (QoE) experienced by users of a streaming media service using a single QoE metric. The single QoE metric may be determined based on a set of empirical characteristics relating to the streaming video service such as startup latency, video quality, and the likelihood of interruptions in streaming playback. The empirical characteristics may be weighted according to how much one factor influences user quality of experience, relative to the others. Representing the QoE as a single metric may allow a streaming media service provider to improve key business measures such as subscriber retention and engagement.

公开(公告)号：US20160072870A1

公开(公告)日：2016-03-10

申请号：US14942084

申请日：2015-11-16

申请人： Netflix, Inc.

发明人： Mark Watson ,  Bin Wang ,  Wei Wei

IPC分类号： H04L29/06

摘要： Techniques for transmitting a digital content stream through a network between a plurality of content servers and a content player. Network performance information for the plurality of content servers is retrieved. Embodiments then determine a mapping of the plurality of content servers to a plurality of portions of a content buffer on the content player, based on the retrieved network performance information. A request is transmitted to each of the plurality of content servers to transmit digital content associated with the corresponding portion of the content buffer.

摘要翻译： 用于通过多个内容服务器和内容播放器之间的网络发送数字内容流的技术。 检索多个内容服务器的网络性能信息。 然后，实施例基于所检索的网络性能信息来确定多个内容服务器与内容播放器上的内容缓冲区的多个部分的映射。 向多个内容服务器中的每一个发送请求以发送与内容缓冲器的相应部分相关联的数字内容。

公开(公告)号：US20140143301A1

公开(公告)日：2014-05-22

申请号：US13683883

申请日：2012-11-21

申请人： NETFLIX, INC.

发明人： Mark Watson ,  Bin Wang ,  Wei Wei

IPC分类号： H04L29/06

CPC分类号： H04L65/80 ,  H04L65/4084 ,  H04L65/60 ,  H04L69/14

摘要： Techniques for transmitting a digital content stream through a network between a plurality of content servers and a content player. Network performance information for the plurality of content servers is retrieved. Embodiments then determine a mapping of the plurality of content servers to a plurality of portions of a content buffer on the content player, based on the retrieved network performance information. A request is transmitted to each of the plurality of content servers to transmit digital content associated with the corresponding portion of the content buffer.

摘要翻译： 用于通过多个内容服务器和内容播放器之间的网络发送数字内容流的技术。 检索多个内容服务器的网络性能信息。 然后，实施例基于所检索的网络性能信息来确定多个内容服务器与内容播放器上的内容缓冲区的多个部分的映射。 向多个内容服务器中的每一个发送请求以发送与内容缓冲器的相应部分相关联的数字内容。

公开(公告)号：US10523732B2

公开(公告)日：2019-12-31

申请号：US14942084

申请日：2015-11-16

申请人： Netflix, Inc.

发明人： Mark Watson ,  Bin Wang ,  Wei Wei

IPC分类号： H04L29/06

摘要： Techniques for transmitting a digital content stream through a network between a plurality of content servers and a content player. Network performance information for the plurality of content servers is retrieved. Embodiments then determine a mapping of the plurality of content servers to a plurality of portions of a content buffer on the content player, based on the retrieved network performance information. A request is transmitted to each of the plurality of content servers to transmit digital content associated with the corresponding portion of the content buffer.

公开(公告)号：US09736202B2

公开(公告)日：2017-08-15

申请号：US14629348

申请日：2015-02-23

申请人： NETFLIX, Inc.

发明人： Anthony N. Park ,  Neil D. Hunt ,  Wei Wei

IPC分类号： G06F15/16 ,  H04L29/06 ,  H04L29/08

CPC分类号： H04L65/4069 ,  H04L65/4084 ,  H04L65/60 ,  H04L65/607 ,  H04L65/80 ,  H04L67/10 ,  H04L69/14

摘要： Embodiments of the present invention set forth techniques for a content player to stream a media file using multiple network connections. To stream the media file, the content player downloads metadata associated with a requested media file, establishes a network connection with multiple content servers (or multiple network connections with a single content server or both) and begins requesting portions of the media file. In response, the requested portions are transmitted to the content player. The content player may employ a predictive multi-connection scheduling approach to determine which network connection to use in downloading a given chunk.