公开(公告)号：US11539961B1

公开(公告)日：2022-12-27

申请号：US17456449

申请日：2021-11-24

Applicant: Amazon Technologies, Inc.

Inventor： Ola Hallmarker ,  Dag Henriksson ,  Yongjun Wu ,  Hai Wei

IPC: H04N19/146 ,  H04N19/156 ,  H04N19/177 ,  H04N19/152 ,  H04N21/234 ,  H04N21/236 ,  H04N21/262

Abstract: Methods and apparatus are described for delivering streams of media content in ways that smooth out the peaks that might otherwise occur due to the bit rate variations that result from encoding of the media content. This is accomplished by controlling the timing of the transmission of packets of the encoded media content.

公开(公告)号：US11356516B1

公开(公告)日：2022-06-07

申请号：US17443313

申请日：2021-07-23

Applicant: Amazon Technologies, Inc.

Inventor： Yongjun Wu ,  Kyle Koceski ,  Kyle Alexander Woo ,  Vasanthakumar Soundararajan ,  Shiranchai Taneja ,  Shyam Krishnan Krishnan Moni ,  Jake O'Halloran

IPC: G06F15/16 ,  H04L67/141 ,  H04L67/02

Abstract: Methods and apparatus are described for facilitating the client-side caching of media content based on one or more properties of the media content. Information relating to the cacheability of different types of content is communicated to the media player on a client device in the manifest or playlist employed by the media player to request fragments of the media content. The media player uses this information to make decisions about how to cache the corresponding content.

公开(公告)号：US11297355B1

公开(公告)日：2022-04-05

申请号：US17249067

申请日：2021-02-18

Applicant: Amazon Technologies, Inc.

Inventor： Hai Wei ,  Brian Manuel Alvarez ,  Yongjun Wu ,  Abhishek Kumar ,  Lei Li

IPC: H04N7/173 ,  H04N21/2187 ,  H04N21/2662 ,  H04N21/236 ,  H04N21/24

Abstract: Techniques are described for creating and using playback-conditions-adaptive live video encoding ladders.

公开(公告)号：US11201903B1

公开(公告)日：2021-12-14

申请号：US17249729

申请日：2021-03-10

Applicant: Amazon Technologies, Inc.

Inventor： Jeremy Matthew Cabrido ,  Vinay Raj ,  Yongjun Wu

IPC: G06F15/16 ,  H04L29/06 ,  H04N21/43 ,  H04N21/242

Abstract: Techniques are described for synchronizing video of a live event with separately generated metadata relating to the live event. Timing information representing a delay associated with the encoding and packaging pipeline is determined for each origin that produces a set of content streams, and then provided in the form of a synchronization offset in the client manifest for various streaming technologies. The client device requests the metadata, and synchronizes the metadata with content segments using timing information associated with each and the synchronization offset communicated in the manifest.

公开(公告)号：US11095699B1

公开(公告)日：2021-08-17

申请号：US16517118

申请日：2019-07-19

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Yongjun Wu ,  Marc Joliveau ,  Stefan Christian Richter

IPC: H04L29/06 ,  H04L29/08 ,  H04L12/26

Abstract: A system for delivering live streaming content based on accurate media data fragment size and duration. A media server may generate custom data identifying a size and duration of a current fragment of a media file. The media server may insert the custom data (e.g., as a custom header or unique packet identifier) and send the custom data to a client media player. The client media player may be configured to decode the custom data and determine the current fragment size and duration.

公开(公告)号：US10863211B1

公开(公告)日：2020-12-08

申请号：US16186927

申请日：2018-11-12

Applicant: Amazon Technologies, Inc.

Inventor： Yongjun Wu ,  Tarun Jindal ,  Kyle Woo ,  Rakesh Tangirala ,  Manish Rao ,  Sitaraman Ganapathy ,  Mairo Pedrini

IPC: H04N21/234 ,  H04N21/258 ,  H04N21/236 ,  H04N21/2665 ,  H04L29/08

Abstract: Methods and apparatus are described for providing media presentations that include content originating from multiple sources. Techniques disclosed include server-side logic for inserting secondary content, such as advertisements, into primary content, such as a VOD presentation. Systems implementing the disclosed techniques can support different viewer device capabilities relating to displaying media presentations that include content from multiple sources.

公开(公告)号：US10812559B2

公开(公告)日：2020-10-20

申请号：US15409231

申请日：2017-01-18

Applicant: Amazon Technologies, Inc.

Inventor： Benjamin Forman ,  Joseph Michael Pavey ,  Bobby Castleberry ,  Ravindra Ganti ,  Stephen Han ,  Euan McLeod ,  Gaurav Saxena ,  Nathaniel Stewart ,  Yongjun Wu

IPC: H04L29/06 ,  H04L12/26 ,  H04L12/911 ,  H04N21/24 ,  H04N21/2343 ,  H04N21/845 ,  H04N21/643 ,  H04N21/6377

Abstract: Techniques are described for just-in-time variable adaptive encoding and delivery of media content. Fragments of media content are encoded at bitrates corresponding to available bandwidth of client devices. If the available bandwidth changes, the bitrate at which fragments are being encoded is adjusted to correspond with the changed bandwidth.

公开(公告)号：US10666903B1

公开(公告)日：2020-05-26

申请号：US16511337

申请日：2019-07-15

Applicant: Amazon Technologies, Inc.

Inventor： Yongjun Wu ,  Charles Benjamin Franklin Waggoner ,  Patrik Schnell

IPC: H04N7/15 ,  H04N19/44 ,  H04N19/30 ,  G10L19/008 ,  H04N19/46 ,  H04N19/85 ,  H04N19/174 ,  H04N19/40

Abstract: Techniques are described by which multiple, independently encoded video streams may be combined into a single decodable video stream. These techniques take advantage of existing features of commonly used video codecs that support the independent encoding of different regions of an image frame (e.g., H.264 slices or HEVC tiles). Instead of including different parts of the same image, each region corresponds to the encoded image data of the frames of one of the independent video streams.

公开(公告)号：US10609440B1

公开(公告)日：2020-03-31

申请号：US16003679

申请日：2018-06-08

Applicant: Amazon Technologies, Inc.

Inventor： Yongjun Wu ,  Ilya Vladimirovich Brailovskiy

IPC: H04N21/00 ,  H04N21/43 ,  H04N19/513

Abstract: Techniques are described for detecting timing data anomalies in streaming video. Techniques are also described for adjusting playback operations based on detecting possible timing data anomalies.

公开(公告)号：US10609356B1

公开(公告)日：2020-03-31

申请号：US15413112

申请日：2017-01-23

Applicant: Amazon Technologies, Inc.

Inventor： Charles Benjamin Franklin Waggoner ,  Yongjun Wu

IPC: H04N13/161 ,  H04N19/31 ,  H04N19/52 ,  H04N19/577 ,  H04N19/597

Abstract: Techniques are described that enable stereoscopic content to be delivered. These techniques including encoding frames of stereoscopic video content within a base layer and temporal enhancement layer and decoding the encoded frames.