Amazon Technologies, Inc.

Kyle Bradley Koceski

Yongjun Wu

Mairo Pedrini

Paul Nann

Abhishek Kumar

Lei Li

Marc Joliveau

Stefan Christian Richter

Amarsingh Buckthasingh Winston

Michael Vidyadhar Kale

Kenneth Thomas Burford

Alex Xiaoye Zhang

Michael Reddick Coleman

Mushegh Malkhasyan

Kyle Alexander Woo

Vasanthakumar Soundararajan

Parminder Singh

Viriya Ratanasangpunth

Nicolas Weil

Matthew Scharr

Samuel James Van Pelt

Varun Chadha

Jake O'Halloran

Christopher Steven Mark Pringle

Shyam Krishnan Krishnan Moni

Joshua Lamb

Elliot Fanwar George

Shyam Krishnan Moni

Shiranchai Taneja

Eyal Safran

Devices, systems, and methods are provided for enhanced parsing of manifest files for streaming media. A method may include receiving, by a media player, a first media manifest including tags indicative of first temporal segments for media content; identifying, using a parser, a first tag indicative of a first temporal segment; identifying, using the parser, a second tag indicative of a second temporal segment; parsing, using the parser, the first tag; based on at least one of the parsing or a user preference indicative of a starting location for playback of first media content of the media content or a preferred bandwidth, refraining from parsing the second tag; retrieving, by the at least one processor, based on a time associated with the first temporal segment, an address of the first video content; and presenting, by the at least one processor, the first media content based on the address.

Enhanced parsing of media manifests for streaming media

Some implementations include methods for replacing advertisements that have been inserted into a manifest associated with live streaming and may include receiving a request for a manifest from a player to enable a user to watch a live stream of an event. The request may be received at a first time when the live stream is already in progress. The manifest may be generated to include content fragments associated with the live event and advertisements based on first set of selection criteria. The manifest may be sent to the player to enable the user to watch the live stream. A seek back request may be received from the player to enable the user to watch the live stream at a second time earlier than the first time. The manifest may be updated to replace at least one advertisement with a replacement advertisement selected based on second set of selection criteria.

Just-in-time dynamic ad insertion (DAI)

Methods and apparatus are described for encoding and delivering secondary content (e.g., advertisements) for insertion in primary content (e.g., live events, movies, and television shows). Secondary content is encoded such that the duration of any audio component of the secondary content is equal to or longer than the video component duration. When the secondary content is inserted, the overall duration of the inserted content is specified to be equal to the video component duration.

Encoding media content for playback compatibility

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.

Client-side caching of media content

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

Methods and apparatus are described for efficiently representing manifests and playlists for media presentations. Some media streaming protocols include repetition syntax by which a sequence of media segments having the same duration can be represented with a single entry. A pattern syntax is introduced by which repeating patterns of segment durations in a cycle may be represented in manifests and playlists.

Higher order manifest data compression

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

Methods and apparatus are described for partitioning a manifest file to generate smaller manifest files for media content playback. A server partitions a manifest file prior to receipt of a request from a client or in response to a request from a client for a manifest for media content for a particular temporal range or subset of playback options.

Manifest partitioning

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.

Origin failover for live streaming

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Seattle, WA, United States of America

Kyle Bradley Koceski