Systems and methods for delivering content to user equipment are described. The content may be delivered using Internet Protocol (IP) delivery, Quadrature Amplitude Modulation (QAM) delivery, or another delivery format. For example, the system may receive content including a plurality of segments. The system may use manifest data to identify each of the plurality of segments. The system may also use the manifest data to generate index data for the plurality of segments, and the index data may be delivered to user devices with the plurality of segments. In some aspects, the system may use location information (e.g., timestamps, such as program clock references) for one or more data packet of the one of the plurality of segments to generate location information for other data packets.

According to one aspect of the present disclosure, a transmission method for enabling transmission of content using a broadcast wave and a communication channel includes: transmitting auxiliary information using at least the broadcast wave, the auxiliary information being information for synchronizing content transmission using the broadcast wave and content transmission using the communication channel when the content is transmitted using the broadcast wave and the communication channel, and the auxiliary information causing a reception side to perform the synchronization when the reception side receives the auxiliary information. Therefore, even if timing of starting reception of the content through the communication is delayed, the reception side can play back the content by a combination of the broadcasting and the communication.

According to one aspect of the present disclosure, a transmission method for enabling transmission of content using a broadcast wave and a communication channel includes: transmitting auxiliary information using at least the broadcast wave, the auxiliary information being information for synchronizing content transmission using the broadcast wave and content transmission using the communication channel when the content is transmitted using the broadcast wave and the communication channel, and the auxiliary information causing a reception side to perform the synchronization when the reception side receives the auxiliary information. Therefore, even if timing of starting reception of the content through the communication is delayed, the reception side can play back the content by a combination of the broadcasting and the communication.

A server remote from client device executes an HTML-based virtual client application. Using the HTML-based virtual client application, the server renders an image corresponding to a video frame. The rendered image includes HTML commands. The server generates an HTML wrapper for the rendered image. Generating the HTML wrapper includes converting the HTML commands to HTML primitives that are selected from a subset of available HTML commands. The server sends the HTML wrapper to the client device to be processed by an HTML-based application on the client device to enable the image to be displayed.

A server remote from client device executes an HTML-based virtual client application. Using the HTML-based virtual client application, the server renders an image corresponding to a video frame. The rendered image includes HTML commands. The server generates an HTML wrapper for the rendered image. Generating the HTML wrapper includes converting the HTML commands to HTML primitives that are selected from a subset of available HTML commands. The server sends the HTML wrapper to the client device to be processed by an HTML-based application on the client device to enable the image to be displayed.

Systems and methods enable the determination of a playback position of a video player. A request is received, at a system over a network from a user device, for an item of video content. Interstitial content is received. The interstitial content is segmented into segments and the segments are encrypted. A given decryption key is associated with a respective locator, such as a URL. A playlist manifest file is generated that includes locators corresponding to segments of the requested item of video content, segments of the interstitial content, and decryption keys for respective encrypted interstitial segments. The generated playlist manifest file is transmitted to the user device. A request for a first decryption key for an encrypted first interstitial segment is received, and based on the request, a playback position of the video player is determined. A corresponding message, indicating the playback position, may be transmitted to a remote destination.

A system and method for describing a scene for a piece of media are provided. The system and method generate a script in a mark-up language and inserts mark-up language for each shot in the script, one or more of a set of blocking instructions that are a blocking direction for the shot and a set of camera directions that define one or more camera parameters for the shot.

A system and method for describing a scene for a piece of media are provided. The system and method generate a script in a mark-up language and inserts mark-up language for each shot in the script, one or more of a set of blocking instructions that are a blocking direction for the shot and a set of camera directions that define one or more camera parameters for the shot.

Creating a sub-titles stream or file composed of sub-titles elements. For each sub-titles element in said sub-titles elements, a sub-titles element is inserted into the sub-titles stream or file, at least one end-of-block condition related to a mode of presentation of sub-titles is verified, and a datum representative of an end of a block according to the mode of presentation of sub-titles is inserted into the sub-titles stream or file upon satisfying said at least one end-of-block condition. A sub-titles stream or file may be presented on a terminal of a user by selecting on the terminal a mode of presentation of sub-titles, reading a sub-titles block associated with the mode of presentation in the stream or file, and presenting on the terminal the at least one sub-titles block according to the mode of presentation.

Creating a sub-titles stream or file composed of sub-titles elements. For each sub-titles element in said sub-titles elements, a sub-titles element is inserted into the sub-titles stream or file, at least one end-of-block condition related to a mode of presentation of sub-titles is verified, and a datum representative of an end of a block according to the mode of presentation of sub-titles is inserted into the sub-titles stream or file upon satisfying said at least one end-of-block condition. A sub-titles stream or file may be presented on a terminal of a user by selecting on the terminal a mode of presentation of sub-titles, reading a sub-titles block associated with the mode of presentation in the stream or file, and presenting on the terminal the at least one sub-titles block according to the mode of presentation.