Amazon Technologies, Inc.

Mcafee, Inc.

Matthew Brinkley

Alex Xiaoye Zhang

Khawaja Salman Shams

Gonzalo Alberto Ramos

Meera Jindal

Cameron Charles

Babak Amir Parviz

Amy Bergsieker

Ting-Hsiang Hwang

Elliot Chong

Daniel Kelly

Varun Ram

Mark DeSpain

Kenneth Victor Chamberlin

William Dirks

Sierra Anderson

John Cowgill

Yongjun Wu

Amarsingh Buckthasingh Winston

Dmitri Rubakha

Rakesh Tangirala

Matthew Scharr

Ryan Permeh

Dynamic transcoding can be used to provide supplemental content, selected to be played during breaks in a stream of primary content, that has the same format as the primary content. It can be desirable to provide supplemental content that is personalized. This may include additional content or advertising that may be of interest or relevance to a viewer. In many instances, the supplemental content will come from a different source and thus can be in a different format. Approaches in accordance with various embodiments can take advantage of dynamic transcoding of the supplemental content to provide properly formatted supplemental content through the same stream as the primary content. A custom manifest can be provided to the media player that points to the transcoded supplemental content. At an appropriate break in the playback, the media player can use the manifest to obtain the formatted supplemental content.

Transcoding of video content

Described are systems and methods that enable users to virtually experience an environment at a destination location from their own user device, control their experience and even interact with others that are physically located within the environment. Likewise, the user's experience may even be improved with the inclusion of enhancements that are presented to the user as the user experiences the environment. Users may interact with the enhancements to obtain additional enhancements, interact with others physically located within the environment, interact with and direct a guide that is physically located within the environment, and receive near real-time video and audio that is transmitted from a guide device located within the environment.

Augmenting transmitted video data

Described are systems and methods that enable users to virtually experience an environment at a destination location from their own user device, control their experience and even interact with others that are physically located within the environment. Likewise, the user's experience may even be improved with the inclusion of enhancements that are presented to the user as the user experiences the environment. User's may interact with the enhancements to obtain additional enhancements, interact with others physically located within the environment, interact with and direct a guide that is physically located within the environment, and receive near real-time video and audio that is transmitted from a guide device located within the environment.

Synchronizing transmitted video data and enhancements

Techniques are described for providing metadata corresponding to primary content of live media streams that include secondary content inserted into the streams.

Providing metadata for live media streams

A multimedia stream may include an indication to insert multimedia content to the multimedia stream. An insertion segment may be selected from among multiple segments such that the insertion segment is selected based in part on metadata such as metadata associated with the recipient of the multimedia stream. Metadata associated with the insertion segment may be obtained. Satisfaction of a compliance requirement may be determined based on various information, such as metadata associated with the recipient and metadata associated with the insertion segment. The insertion segment may be made available as part of the multimedia stream.

Dynamic multimedia stream insertion from multiple sources

A multimedia stream may be abandoned (e.g., terminated) under various contexts. Metadata surrounding the abandonment, such as information regarding multimedia segments shown at or near the time of abandonment, may be stored. A system may detect satisfaction of a condition based at least in part on abandonment metadata associated with an abandoned stream, obtain a set of abandonment metadata sharing a characteristic in common, and determine a cause. Depending on the determined cause, various mitigations may be executed&#x2014;for example, if abandonment of streams is detected in a specific location at a particular point or period in time, one or more network diagnostics tests may be executed to determine whether there are network connectivity issues for viewers from the specific location.

Dynamic detection and mitigation of multimedia stream abandonment

Systems and methods are described to enable request-driven encoding of content portions to be played back as part of a content stream. A content stream can represent multiple types of content, each initially encoded according to different formatting parameters. Thus, playback of the multiple types of content as initially encoded would result in an inconsistently formatted content stream. To address this, a streaming content delivery service may respond to requests by including in a manifest file for a stream consistently formatted content portions, even when one or more of such portions is not yet available. The streaming content delivery service can initiate encoding of the not-yet-available portions, such that they are available and delivered to a client when requested.

Request-based encoding for streaming content portions

Systems and methods are described to enable delivery of a content stream while inhibiting or preventing removal, blocking, or skipping of portions within that content stream. Existing systems can request that a client device send various notifications during viewing of a streaming content. This information can be used by the client device to automatically remove or modify secondary content from the content stream. To prevent such removal or modification, embodiments of the present disclosure can remove the requirement that a client device have knowledge of when notifications are to be transmitted regarding portions of a content stream. A server can obtain monitoring information from either or both of a client device or a network-delivery system, to determine when the client device has output a portion of a content stream. The server can then determine an appropriate notification to be transmitted in response to that output, and transmit the notification.

Output tracking for protected content-stream portions

Systems and methods are described to enable request-driven encoding of content portions to be played back as part of a content stream. A content stream can represent multiple types of content, each initially encoded according to different formatting parameters. Thus, playback of the multiple types of content as initially encoded would result in an inconsistently formatted content stream. To address this, a streaming content delivery service may respond to requests by determining whether consistently formatted content portions are available, and if such portions are not available, select fallback content portions for inclusion in the stream. The streaming content service can further initiate generation of the consistently formatted content portions in response to the request, such that subsequent requests may be serviced using the consistently formatted content portions.

In an example, a computing device may an input verification engine (IVE) that provides input verification services within a trusted execution environment (TEE), including a memory enclave. Taking a Java-based Android application as an example, the IVE securely verifies and validates user inputs for sensitive computing applications, without exposing the inputs to external applications. The IVE may be implemented in native C/C++ or similar, or may provide instructions to dynamically provision an enclave and import a minimal Java Virtual Machine (JVM) into the enclave so that the IVE can run in Java. The IVE may also contain binary analysis tools to analyze an input binary to identify and tag portions that receive user input, so that in a binary translation, those portions can be run within the enclave.

Input verification

A method for preventing malware attacks may include rewriting instructions that are intercepted from an application launched on an electronic device. The instructions are determined to have attempted to access a sensitive system resource. The rewritten instructions are executed on the electronic device and the results are observed.

Growing community of inventors

Portland, OR, United States of America

Matthew Brinkley