Amazon Technologies, Inc.

Paul Nann

Kyle Bradley Koceski

Mairo Pedrini

Marc Joliveau

Stefan Christian Richter

Kenneth Thomas Burford

Eyal Safran

Kevin Sehan Lee Chong

Elliot Fanwar George

Systems, methods, and computer-readable media are disclosed for providing a nonlinear, dynamic, and prioritized content caching scheme for segmented content during playback. Certain embodiments provide new techniques for optimally determining preferred content, prioritizing the preferred content for download and consumption, and, in systems where storage and memory systems are constrained, utilizing the same prioritization system for optimized garbage collection. Example methods may include determining a current playhead position associated with a video playback. Certain methods include determining a cache priorities for fragments based on the current playhead position and the positions of the fragments in the video playback. A first fragment may be the next fragment with respect to the linear playback, and a second fragment may follow the first fragment. Certain methods include determining that the second cache priority is higher than the first cache priority and providing the second fragment to a user device.

Nonlinear dynamic prioritized content caching for segmented content

Techniques for adaptive backfilling of media fragments are described. As one example, a computer-implemented method includes sending, by a media player, a request for a plurality of media fragments from a content data store, receiving the plurality of media fragments from the content data store with at least one media fragment at a first quality level into a front buffer of the media player via a network, starting playback of the plurality of media fragments from the front buffer after a startup threshold number of media fragments are received in the front buffer, detecting when a backfill threshold of the media player is exceeded by a backfill indicator, and replacing at least one of the plurality of media fragments at the first quality level in the front buffer of the media player with a second, higher quality level variant via the network when the backfill threshold is exceeded.

Adaptive media fragment backfilling

Systems, methods, and computer-readable media are disclosed for controlling configurable lights using color metadata of a media stream. In one embodiment, an example method may include sending a request for media content for presentation at a user device, the media content comprising video content, receiving a media stream comprising in-band data and out-of-band data, the in-band data comprising video content data, and the out-of-band data comprising color metadata, determining, based at least in part on the color metadata, one or more first lighting parameters for one or more configurable lights associated with an environment of the user device, the one or more first lighting parameters corresponding to a first portion of the video content, causing a presentation of the first portion of the video content at the user device, and causing, based at least in part on the one or more first lighting parameters, the one or more configurable lights to output one or more first colors during the presentation of the first portion of the video content at the user device.

Controlling configurable lights using color metadata of a media stream

Techniques are described for automatically migrating client devices away from unreliable origin stacks in ways that mitigate potentially negative impacts on the user experience. Multiple origin stacks are provisioned in parallel to provide encoded versions of the same broadcast content for streaming to client devices. Each of the origin stacks is monitored to ensure that it is operating correctly. When an origin stack fails or becomes unreliable, each of the client devices involved in a session corresponding to the unreliable stack is provided with the information it needs to establish a new session corresponding to another one of the stacks.

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Seattle, WA, United States of America

Paul Nann