- In TV programming, and similar multimedia presentations such as films presented in theaters, the providing of text, and symbols such as !GRAPHICS!, which are intended to accurately transcribe the dialogue and describe the sounds of that being presented. A decoder is not necessary to show subtitles, as the displayed text and symbols are always superimposed on the viewed image. Useful, for instance, for those with reduced hearing. This contrasts with closed-captioning, which requires a decoder to appear on-screen.
Not what you were looking for?