Although subtitles are usually called closed captioning, or utilized synonymously with them, they are not really the same. Firstly, as we have seen, closed captioning reflects all the audio, while subtitles just convey the dialogue. Secondly, closed captioning exists in one separate file from the video, meaning the audience can turn it on or off. Conversely, subtitles can be burned into the video file or separately uploaded like closed captions.