A. Closed captioning is the display of text on the video screen in order to communicate spoken dialogue. The audience for closed captioning is typically those individuals that are hard of hearing. However, they can also be used to display a translation (aka 'subtitles') to non-native speakers of the video language.

A. To enable closed captioning, simply upload a caption file for each of your media. Caption files are treated as video metadata and therefore can be uploaded in the ‘Media Properties’ in your account. The format of a caption file should follow the Distribution Format Exchange Profile (DFXP) standard. Uploaded files that do not follow this standard will be ignored.

A. DFXP is an XML-based standard developed by W3C for the representation of time-based text, or captions. For information on using DFXP to create caption files, see our Closed Captioning Guide

A. The LVP player will automatically detect the existence of a caption file for a media, displaying a closed-caption control for the viewer. Once the viewer clicks the closed-caption control a menu of available languages will display. The viewer can select a specific language or select to disable the display of captions.

A. Yes, DFXP files can contain captions for multiple langauges. If multiple languages are present in the file the LVP player will automatically represent the choice of languages to the viewer.