Synamedia Limited

Techniques for watermarking at the edge in a low latency content delivery system are described herein. In various embodiments, an edge relay server, which includes one or more processors and non-transitory memory, announces a watermarked video track for a media stream. The edge relay server obtains from a client device a watermark identifier associated with a request for the watermarked video track. The edge relay server, in response to receiving the request, subscribes to one or more video tracks in order to receive units in the one or more video tracks representing the media stream. The edge relay server further constructs the watermarked video track using the units according to the watermark identifier and sends to the client device the watermarked video track.

Techniques for dynamic application packaging and execution are described herein. In various embodiments, one or more servers, which include one or more processors and non-transitory memory, duplicate a component in an application to generate duplicated components within the application. The server(s) then package the application to include diversified versions of the duplicated components and obtaining metadata describing the diversified versions. The server(s) also receive from a client device a request for execution of a version of the application, compose a unique manifest for the client device in response to the request, where the unique manifest identifies the version of the application and a version of the component among the diversified versions. The server(s) then cause execution of the version of the application at the client device, including causing execution of the version of the component at the client device according to the unique manifest.

Techniques for providing multimedia content by a cloud media player are described herein. In some embodiments, the cloud media player is hosted by one or more servers that include one or more processors and a non-transitory memory. The cloud media player receives a request to play a media content item at a client device. The cloud media player identifies, based at least in part on client conditions at time of the request, one or more units of the media content item for the client device to download according to a manifest obtained and parsed by the one or more servers. The cloud media player then signals to the client device the one or more units to download.

Techniques for enabling the association of client devices to anonymized households during an authorization process is performed at a server including processor(s) and non-transitory memory. The server receives a request for a service or content from a client device that specifies a device identifier, a first hash value approximating a unit in which the client device is deployed, and a second hash value representing a connection to the unit. The server records and evaluates the request based on the device identifier, the first hash value, and the second hash value so that an access token is generated for the client device and bound to the first hash value. The server sends the access token to the client device for access to the service or content via the connection to the unit upon validating the request or reports an anomaly determined based on the recorded data.

Techniques for selecting TV user interface (UI) transition characteristics are described. In accordance with various embodiments, a transition characteristics selection method is performed at a device (e.g., a cloud UI engine on a server) with one or more processors and a non-transitory memory. The UI engine receives a request for transitioning from a first screen to a second screen on a client device while in a real-time content presentation mode. In response to receiving the request and while in the real-time content presentation mode, the UI engine obtains one or more presentation conditions of the client device and selects one or more transition characteristics for transitioning from the first screen to the second screen based on costs associated with the one or more transition characteristics and the one or more presentation conditions.

Anti-piracy techniques described herein are performed on a server that includes one or more processors and a non-transitory memory. The server enters a state to accumulate a portion of a bitstream extracted from parts of a clip obtained from a pirate service. The server then identifies a set of suspected piracy devices for the piracy service based on a confidence score of suspected piracy calculated for each client using the accumulated portion of the bitstream exceeding a threshold set relative to the state. The server additionally determines whether or not the set of suspected piracy devices for the pirate service satisfies a stable collusion state criterion corresponding to the state. The server enters a next state to iteratively perform the accumulating and the identifying upon determining the set of suspected piracy devices for the pirate service not satisfying the stable collusion state criterion corresponding to the state.

Techniques for multi-stream content delivery are described herein. In various embodiments, at least one server hosting a cloud computing platform renders a user interface for a client device, where the user interface includes low latency content and buffered content. The server then identifies display properties of the buffered content in the user interface and encodes the low latency content into a low latency stream. The server also streams the user interface to the client device, including transmitting to the client device the low latency stream, separate and distinct from a buffered content stream for delivering the buffered content to the client device. The server additionally signals the client device the display properties of the buffered content for playback of the low latency stream and the buffered content at the client device.

Techniques for cloud-based video splitting are described herein. In various embodiments, at least one server hosting a cloud-based video splitter renders one or more user interfaces for a plurality of client devices connected to a plurality of displays. The cloud-based video splitter divides each frame of a video corresponding to the one or more user interfaces into a plurality of portions and encodes the plurality of portions into a plurality of videos according to properties of the plurality of displays and characteristics of the plurality of client devices. The cloud-based video splitter also streams the plurality of videos to the plurality of client devices for synchronized presentation on the plurality of displays.

Techniques for measuring cloud-based input latency are described herein. In accordance with various embodiments, a server including one or more processors and a non-transitory memory receives from a client an input event corresponding to a request for a TV user interface (UI). The server adds a tag to each of a set of screens corresponding to the TV UI and records event data corresponding to the input event prior to rendering the set of screens into a set of rendered frames. The server additionally decodes the tag in the set of rendered frames to generate metadata that associate the event data with the set of rendered frames prior to encoding the set of rendered frames into a set of encoded frames. The server also transmits to the client the set of encoded frames and the metadata.

Anti-collusion techniques that use multiple watermark images are described herein. In accordance with various embodiments, a client device includes a processor and a non-transitory memory. The client device obtains a watermark image representing a watermark identifier. The client device further generates multiple variants of the watermark image representing the watermark identifier, where the multiple variants differ in parameters. The client device also selects a first variant from the multiple variants to bind with a media content item at a first time. The client device additionally binds the first variant with the media content item for rendering.