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公开(公告)号：US11115697B1
公开(公告)日：2021-09-07
申请号：US16705952
申请日：2019-12-06
IPC分类号： H04N21/2662 , H04L29/06 , H04N21/2343 , H04L12/24 , H04N21/258 , H04N21/2543
摘要： Techniques for resolution-based manifest generation for adaptive bitrate video streaming are described. As one example, a computer-implemented method includes performing a first, convex hull optimization on a video file for a first device resolution, performing a second, convex hull optimization on the video file for a second, lower device resolution, generating a first video representation for a point on both the first, convex hull optimization and the second, convex hull optimization for the first device resolution and the second, lower device resolution, generating a second video representation for a point only on the second, convex hull optimization for the second, lower device resolution, receiving a request for a manifest for the video file from a client device at the second, lower device resolution, generating the manifest for the client device that identifies the first video representation and the second video representation, and sending the manifest to the client device.
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公开(公告)号：US10904639B1
公开(公告)日：2021-01-26
申请号：US15494914
申请日：2017-04-24
发明人： Nicholas James Benson , Andrew Glass , Srikanth Kiran Kotagiri , Lei Li , Stefan Christian Richter , Rakesh Tangirala , Amarsingh Buckthasingh Winston , Yongjun Wu
IPC分类号： H04L29/06 , H04L29/08 , H04N21/81 , H04N21/2187 , H04N21/234 , H04N21/262 , H04N21/472 , H04N21/482 , H04N21/845 , H04N21/8547 , H04N21/239 , H04N21/2665 , H04N21/231
摘要： Techniques are described for server-side fragment insertion and delivery of media content. After receiving a request to play back media content, a manifest is generated that includes fragments associated with the requested media content and fragments associated with different media content. A client device requests fragments from a media server according to the manifest, and the media server provides the correct fragment in response to the request.
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公开(公告)号：US10904588B1
公开(公告)日：2021-01-26
申请号：US16296642
申请日：2019-03-08
发明人： Nathaniel Stewart , Lei Li , Mairo Pedrini , Patrick Joseph Lewis , Ravindra Ganti , Parminder Singh , Gaurav Saxena , Kent Haakan Karlsson , Yongjun Wu
IPC分类号： H04N21/234 , H04N21/2187 , H04N21/442
摘要： Methods and apparatus are described for stitching independently encoded content streams together such that they appear to be part of a single streaming session.
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公开(公告)号：US10834158B1
公开(公告)日：2020-11-10
申请号：US15934291
申请日：2018-03-23
摘要： Techniques are described for encoding information in manifest data in a way that enables identification of a version of media content. Such a capability may be used to identify dynamic content inserted into the media content for the purpose of tracking the effect of the dynamic content on user generated feedback. This capability might also be used to identify a user or device associated with a particular copy of the media content for anti-piracy purposes.
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公开(公告)号：US10803854B1
公开(公告)日：2020-10-13
申请号：US16017849
申请日：2018-06-25
发明人： Joshua Danovitz , Lei Li , Lars Christian Ulness , Andrew J. Watts , Amarsingh Buckthasingh Winston , Umut Utkan , Michael Flynn , Girish Bansilal Bajaj
IPC分类号： G10L15/08 , G06K9/00 , G06F3/16 , G06Q30/02 , G06F16/907
摘要： Techniques are described for fulfilling an utterance request for an item represented within a video rendered at a client device. In some implementations, a user account associated with the request is identified, enabling a video stream transmitted in association with the user account at the time that the request was uttered to be identified. In one technique, a timestamp associated with the request is used to identify the relevant portion of the video stream. The item represented within the portion of the video stream can be identified using various techniques and/or information such as image recognition, metadata within the video, subtitles, closed captions, and/or a database mapping between the item and a video content item transmitted in the video stream.
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公开(公告)号：US10516753B2
公开(公告)日：2019-12-24
申请号：US16278433
申请日：2019-02-18
发明人： Lei Li , Andrew Jason Ma , Gurpreet Singh Ahluwalia , Abhishek Dubey , Sachin Shah , Vijay Sen , Gregory Scott Benjamin , Prateek Rameshchandra Shah , Cody Wayne Maxwell Powell , Meltem Celikel , Darryl Hudgin , James Marvin Freeman, II , Aaron M. Bromberg , Bryant F. Herron-Patmon , Nush Karmacharya , Joshua B. Barnard , Peter Wei-Chih Chen , Stephen A. Slotnick , Andrew J. Watts , Richard J. Winograd
IPC分类号： H04L29/08 , H04L29/06 , G06F21/10 , G06F12/02 , G06F12/0813 , G06F12/0862 , G06F12/121
摘要： Disclosed are various embodiments for predictive caching of content to facilitate use of the content. If account is likely to commence use of a content item, the content item is cached before the use is commenced. The cache may be divided into multiple segments with different content selection criteria.
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公开(公告)号：US10275523B1
公开(公告)日：2019-04-30
申请号：US15668537
申请日：2017-08-03
摘要： A method and system for classifying document data is described. The method may include classifying a first portion of an electronic document as substantive content or noise, classifying a second portion of the electronic document as substantive content or noise, determining a first feature of the first portion of the electronic document indicative of substantive content using a machine learning algorithm, and determining a second feature of the second portion of the electronic document indicative of noise using the machine learning algorithm.
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公开(公告)号：US10116719B1
公开(公告)日：2018-10-30
申请号：US15173495
申请日：2016-06-03
IPC分类号： G06F15/167 , H04L29/06 , H04L29/08
摘要： Methods and apparatus are described for generating manifest files for media content playback. A server can generate manifest files that include initialization metadata obtained from initialization fragments of media content files. Client devices can initiate playback of media content for playback using the manifest files without downloading or parsing the initialization fragments of the media content files.
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公开(公告)号：US20170206364A1
公开(公告)日：2017-07-20
申请号：US15481587
申请日：2017-04-07
发明人： Lei Li , Pankaj Sethi , Patrik Schnell , Wesley Shawn Davis , Joshua B. Barnard
CPC分类号： G06F21/602 , G06F21/10 , G06F2221/07 , H04L9/0631 , H04L63/0428
摘要： Disclosed are various embodiments for generating encrypted media content items as well as decrypting encrypted media content items. A content type is embedded in an initialization vector corresponding to an encrypted sample. Upon decryption of encrypted content, the content type is identified and an action taken based upon the detected content type.
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公开(公告)号：US11297355B1
公开(公告)日：2022-04-05
申请号：US17249067
申请日：2021-02-18
发明人： Hai Wei , Brian Manuel Alvarez , Yongjun Wu , Abhishek Kumar , Lei Li
IPC分类号： H04N7/173 , H04N21/2187 , H04N21/2662 , H04N21/236 , H04N21/24
摘要： Techniques are described for creating and using playback-conditions-adaptive live video encoding ladders.
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