A test system includes a computer system including a processor and a memory; and an electronic interface in communications with the computer and a television device under test, the electronic interface including a test interface board configured to permit the television device under test to be put into a debug mode by the computer system.

Some aspects of the disclosure relate to a system and methods for monitoring an audio signal that may comprise one or more device audio components, e.g., from a device presenting content and an ambient audio component. The system can determine the ambient audio component of the audio signal, and can determine whether the ambient audio component has satisfied an ambient audio component threshold. If the ambient audio component threshold has been satisfied, the system can cause the device to display a visual representation of the device audio component, such as presenting text corresponding to speech of the audio component.

A video display method of a user terminal, includes determining whether ambient noise measured when a video is played is in an allowable range, and generating subtitles based on a voice signal included in the video in response to the ambient noise being determined to be out of the allowable range. The method further includes displaying the generated subtitles with the video.

A method of managing visual content. In one instance, the method includes receiving a stream of video fingerprints, derived in a fingerprint generator by an irreversible data reduction process, from respective temporal regions within a particular visual content stream and at a fingerprint processor that is physically separate from the fingerprint generator via a communication network. The fingerprints are processed in the fingerprint processor to generate metadata which is not directly encoded in the fingerprints. Processing of the fingerprints includes windowing the stream of fingerprints with a time window, deriving frequencies of occurrence of particular fingerprint values or ranges of fingerprint values within each time window, determining statistical moments or entropy values of said frequencies of occurrence, comparing said statistical moments or entropy values with expected values for particular types of content, and generating metadata representing the type of the visual content.

A test system includes a computer system including a processor and a memory; and an electronic interface in communications with the computer and a television device under test, the electronic interface including a test interface board configured to permit the television device under test to be put into a debug mode by the computer system.

A test system includes a computer system including a processor and a memory; and an electronic interface in communications with the computer and a television device under test, the electronic interface including a test interface board configured to permit the television device under test to be put into a debug mode by the computer system.

A method, apparatus and computer program product are provided to facilitate calibration of an audio playback system with a video presented upon a display. In the context of a method, information about a display from a first location is received. The method also includes determining an angle of the display based upon the received information about the display and the first location. The method further includes causing an audio playback system associated with the display to be calibrated based upon a modified azimuth of a source of audio signals based upon the determined angle. A corresponding apparatus and computer program product are also provided.