Closed Captioning has enabled a lot of people to have a richer viewing experience nowadays, as through it, they are able to better understand the things that they see on TV. This is because Closed Captioning, or CC works by displaying the audio portion of a TV show or video as text on the TV screen. It helps to emphasize or, according to the US FCC, or Federal Communications Commission, a “critical link” to news, information, and entertainment for people who are either deaf or have difficulty hearing. The FCC has already set rules to CC for TV programming, and below are the rules set by the FCC which your CC service should most definitely follow.
Of course, you would not want random gibberish to pop up on your screen! The captions much match the words spoken, and not only that, but be able to convey the background noises, as well as other noises in an extensive manner as possible.
The captions must appear at the same time the words are spoken, same goes for sounds. They must also appear at a speed that’s neither too fast nor too slow, so that they could be read easily by the viewers. Having a synchronous relationship between the words and sounds are crucial, for they also allow the viewers to properly understand.
The captions should not hinder you from getting visual content, and ideally, these should be placed at the bottom of the screen. It must be in a color which can be seen regardless of the color that is dominant for that particular frame.
Captions should, of course not just be found in certain parts of the film. Each part of the film contributes to make it a whole, and it would not be understood correctly if subtitles or the CC would only appear in certain parts of the film.