Amazon Technologies, Inc.

Twitch Interactive, Inc.

Evertz Microsystems Ltd.

Tarek Amara

Yueshi Shen

Luke Curley

Selvanayagam Sendurpandian

Yongjun Wu

Ilya Vladimirovich Brailovskiy

Daniel Lin

Qi Keith Wang

Andrew Francis

Naushirwan Navroze Patuck

Nikhil Purushe

Ross Engers

Shuhan Jin

Levi Lovelock

Berk Taner

Yann Landry

Neeraj Satish Joshi

Jean-Sebastien Royer

Rakesh Thakor Patel

Rohit Puri

Abhinav Kapoor

Eran Ambar

Jorge Arturo Villatoro

Ivan Marcin

Shawn Hsu

Benjamin Hirsch

Xiangbo Li

Alex Converse

Alpesh Patel

Sunil Koteyar

Sangmook Jung

Alex Battaglia

Jonas Bengtson

A video streaming service may include a segmentation component that provides segment metadata that indicates starting locations for a plurality of segments of video content that are produced during transcoding of the video content. The segment metadata may be sent to a first transcode server and a second transcode server to allow alignment of segmentations between the first transcode server and the second transcode server. This may allow transcoding of the video content to be seamlessly switched from the first transcode server to the second transcode server, during transmission of the video content, without causing interruption of playback. The first transcode server and the second transcode server may also operate in parallel to produce different versions of the video content, such as versions encoded using different codecs. A video player may seamlessly switch between these different codec versions without causing interruption of playback.

Seamless transcode server switching

A processing service of a provider network may protect media content from being tampered with when it is transmitted from the provider network/transcoder to untrusted networks (e.g., third-party networks/CDNs) and to a media player. The processing service (e.g., the transcoder) generates a public and a private key. The service uses the private key to digitally sign content portions (e.g., video frames) before distribution to untrusted CDNs. The provider network creates a manifest that includes the public key. To play the media content, the media player obtains a manifest that includes the public key (via a secure/trusted connection with the provider network). The media player may then obtain the media content from an untrusted edge server/CDN and validate it using the public key that was separately obtained from the manifest (to verify the content was not tampered with).

Protecting media content integrity across untrusted networks

Validating media content retrieved from untrusted networks

Various techniques for providing video feed redundancy are described herein. Instructions may be provided for switching input to an output video feed between two or more redundant input video feeds. In some examples, the redundant input video feeds may not be duplicates, may not be frame synchronized, may not be transmitted from the same location, may not be transmitted using the same network types or transmission protocols, and/or may not be initiated at the same time. In some examples, the instructions for video feed redundancy may be associated with respective authorization keys for the redundant input video feeds.

Video feed redundancy

Methods to switch between renditions of a video stream are generally described. In some examples, the methods may include encoding a video stream at a first image quality in a first rendition and a second, lower image quality in a second rendition. The methods may further include sending the first rendition to a recipient computing device. The methods may include receiving a request to switch from the first rendition to the second rendition. The methods may include determining that first indicator data of a first inter-coded frame indicates that the video stream can be switched to a lower image quality rendition at the first inter-coded frame. In some examples, the methods may further include sending the second rendition to the recipient computing device.

Rendition switch indicator

Various embodiments are described herein for methods and systems for operating a video compression system. In one example embodiment, the method of operating a video compression system includes determining an encoding complexity limit for an encoding module within the video compression system, determining signal complexity of an input signal to the video compression system, comparing the encoding complexity limit to the signal complexity at an adaptive scaling module within the video compression system, and if the signal complexity is determined to be greater than the encoding complexity limit, manipulating the resolution of the input signal at the adaptive scaling module to generate an output signal.

Systems and methods for improving video compression efficiency

Growing community of inventors

Burlington, Canada

Tarek Amara