Systems, devices and methods are described to process timed text that is associated with media or other video programming. Pre-set data that describes the particular format of the timed text that is associated with a program is initially received and stored at the media receiver prior to receiving the program with encoded timed text. The timed text that is associated with the received program is interpreted according to the pre-set data previously stored at the media receiver, and the program with the interpreted timed text is output to a display for presentation to the viewer.

Methods and systems to authorize devices and/or perform other actions based on identifying content distributors are described. In some example embodiments, the methods and systems access video content playing at a client device, calculate fingerprints of a portion of the video content, identify a distributor of the video content based on the fingerprints, and perform an action in response to the identification of the distributor of the video content, such as actions to authorize the client device or other associated devices (e.g., second screens) to receive content from the distributor, actions to present sponsored content to the client device or associated devices, and so on.

Aspects of the subject disclosure may include, for example, a system for indicating a program boundary in an adaptive bitrate media stream, where the system includes a memory and a processor that performs operations including generating multiple transcoded media output streams of different bit rates from an input linear media stream, fragmenting the multiple transcoded media output streams into chunks, detecting a program boundary in the input linear media stream, and supplying a program change indicator in a manifest file for implementing program change features in mobile communication devices. Other embodiments are disclosed.

A system and method of adjusting playback of content in response to a viewer's emotional reaction is disclosed. The method includes detecting viewer emotion, via a camera, in reaction to subject matter of the content being presented on a display screen. The content includes subject matter and metadata associated with the subject matter. Additionally, the method analyzes the viewer emotion in reaction to the subject matter of the content presented on the display screen and identifies the analyzed viewer emotion in reaction to the subject matter of the content. The method also associates an identified viewer emotion with at least one playback attribute linked with the presentation of the content using the metadata associated with the subject matter of the content presented on the display screen. Further, the method adjusts the at least one playback attribute linked with presentation of the content that corresponds with the identified viewer emotion.

A method and device for encapsulating media data into a media file and parsing a media file. The method comprising according to one of its aspects: including, in the media file, a first track comprising media samples, each media sample contains a set of one or more NAL units; including, in the media file, a second track comprising an extractor, the extractor is a structure referencing a data entity in a media sample contained in the first track; and including, in the extractor, a copy mode attribute that identifies, in the media sample, the referenced data entity relatively to one or more NAL units contained in the media sample.

A video encoding method, a video decoding method, an apparatus, a device, and a storage medium include parsing a first flag from the video bitstream when a video bitstream is allowed to be decoded by referencing a library picture corresponding to a library picture bitstream, using a value of a target parameter of the video bitstream as a value of a target parameter of the library picture bitstream referenced by the video bitstream when a value of the first flag is a first value, and reconstructing, based on the value of the target parameter of the library picture bitstream referenced by the video bitstream and the library picture bitstream referenced by the video bitstream to obtain the library picture corresponding to the library picture bitstream referenced by the video bitstream.

A system stores a plurality of data models, each data model being configured to sort datasets based on a set of criteria unique to the data model. The system further identifies a plurality of content streams on a plurality of content streaming platforms. The system then executes each data model of the plurality of data models on each content stream of the plurality of content streams to generate a labeled content file of each content stream of the plurality of content streams.

Systems and methods for presenting contextual clips for distributed content are disclosed. Some embodiments include receiving an input for presenting content while the content is currently being distributed at a first distribution time point within the content, transmitting a request for contextual content prior to the first distribution time point, receiving information for displaying a plurality of contextual content clips distributed prior to the first distribution time point, wherein each of the plurality of contextual content clips corresponds to an event depicted in the content, displaying the plurality of contextual content clips using the received information, and displaying the content at a second distribution time point after all of the plurality of contextual content clips have been displayed.

A combiner system may be provided for combining, in a compressed domain, video streams of different media sources in a composite video stream by including a respective video stream as independently decodable spatial segment(s) in the composite video stream. The combiner system may generate composition metadata describing a composition of the spatial segments in the composite video stream and identification metadata comprising identifiers of the respective video streams. A receiver system may obtain decoded video data of a respective video stream based on the composition metadata and a decoding of the composite video stream, and based on the identification metadata, identify a process for handling the decoded video data. Thereby, the composition of spatial segments may dynamically change, while still allowing the receiver device to correctly handle the spatial segments.

The present disclosure provides a video timing labeling method. The method includes: acquiring a video file to be labeled and text information to be inquired; acquiring a video segment matching the text information to be inquired based on a timing labeling network of a timing labeling model; acquiring a video feature of the video segment matching the text information to be inquired based on a feature extraction network of the timing labeling model; acquiring text information corresponding to the video segment labeled in the video file based on a visual text translation network of the timing labeling model; and outputting the video segment matching the text information to be inquired and the text information corresponding to the video segment labeled in the video file based on the timing labeling model.