What are the different styles of captions?
There are two major styles of captions currently being used in the industry: pop-on and roll-up.
Pop-on captions are usually one or two lines of captions that appear onscreen and remain visible for one to several seconds before they disappear. A few frames of media are left without captions before the next line(s) of captions “pop-on.”
Roll-up captions are usually verbatim and synchronized. Captions follow double chevrons (which look like “greater than” symbols), and are used to indicate different speaker identifications. Each sentence “rolls up” to about three lines. The top line of the three disappears as a new bottom line is added, allowing the continuous rolling up of new lines of captions.