Captioning is related to sub titles for dialogue only except that Captioning Service not only conveys the content of spoken dialogue but also supports non dialogue content such as audio information which is needed to understand the flash DVD program content including, speaker identification, location, laughter, music, and sound effects.
DVD has opened an interesting world of captioning or sub titling and closed captioning opportunities. A DVD disc can include up to six languages of captions. Translucent backgrounds and outline borders makes DVD Captioning Service easier. Also, a DVD adequately supports 32 sub title streams.
Caption Depot 