Amazon Technologies, Inc.

Twitch Interactive, Inc.

Alex Converse

Rohit Puri

Luke Curley

Selvanayagam Sendurpandian

Benjamin Hirsch

Xiangbo Li

Nagendra Akula Suresh Babu

Christopher LaFata

Maxwell Stoller

Adam Lupinacci

Raymond Kung Hsien Lin

James Hurley

Sean Patrick DuBois

James Yamat

Yueshi Shen

Matthew Louis Szatmary

Ivan Marcin

Martin Hess

Tarek Amara

Sangmook Jung

Alex Battaglia

Described are systems and methods for providing a publisher-subscriber architecture for audio and/or video conferencing. Embodiments of the present disclosure can utilize one edge computing resources associated with each client device participating in the audio and/or video conference. One or more client devices can publish streams to the associated edge computing resources. The streams can then be pushed via a data network to the edge computing resources associated with the subscribing client devices. The subscribing client devices can access and fetch the streams from the edge computing resources, which can be presented on the client devices as part of a conferencing session experience.

Publisher-subscriber architecture for video conferencing

Described are systems and methods for providing a publisher-subscriber architecture for audio and/or video conferencing. Embodiments of the present disclosure can utilize one edge computing resource associated with each client device participating in the audio and/or video conference. One or more client devices can publish streams to the associated edge computing resources. The streams can then be pushed, via a data network, to the edge computing resources associated with the subscribing client devices. The subscribing client devices can access and fetch the streams from the edge computing resources, which can be presented on the client devices as part of a conferencing session experience.

Techniques for migrating live broadcast streams from one data center to another data center are described herein. A data center from a plurality of data centers may be determined to transfer live streaming video content from a first data center to the data center. A separate live streaming session for each live streaming session being broadcast by the first data center may be generated by communicating with an ingest service server that receives media content used to generate each separate live streaming session and the live streaming session. Each separate live streaming session may be routed to the candidate data center. A determination that each separate live streaming session of the candidate data center is synchronized with each live streaming session of the first data center may be made. An update to a mapping of IP addresses to redirect requests from the first data center to the candidate data center.

Systems and methods for switching the processing of a live content stream to another datacenter

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 video packaging and origination service can include one or more encoder components that receive content for encoding and transmitting to requesting entities. Responsive to a request for content, an encoder can determine an initial set of parameters based on network measurements, including buffer size, bitrate and output resolution. Once the updated encoder component is instantiated and configured, the encoder can monitor performance and dynamically modify keyframe interval and framerate parameters to allow for streaming in lower bandwidth networks.

Managing encoding based on performance

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Oakland, CA, United States of America

Alex Converse