A caption file contains both the text and information about when each line of text should be displayed.
A caption is synonymous with subtitle and is usually displayed at the bottom of the screen.
SRT and DXFP are text file formats that contain captions; including the time each subtitle should be displayed followed by the text of the subtitle.
If the caption includes non-dialog text, the file is considered a closed caption.
Transcriptions are files that contain text of the video without time stamps. If the video is in English, use our partner 3PlayMedia to apply speech processing algorithms to determine when the words in a transcript should be displayed. (See 3Play Media's interactive transcript player in action).
Captions can either be a form of written translation of a dialog in a foreign language or a written rendering of the dialog in the same language. Closed captions files contain added information to help viewers who are deaf and hard-of-hearing to follow the dialog, or people who cannot understand the spoken dialogue or who have accent recognition problems.
For greater accessibility and compatibility with equipment like screen readers, use Kaltura’s 508 Compliant Player. For more information, see 508-Compliant Video Player.