This particular page describes how to create captions or add text to a Quicktime movie. Separate the text that you would like to appear in separate frames with a return. For an example, look in the quicktime folder on your desktop and open gohometxt.txt .
Romanes eunt domus.
It, it says, Romans go home. No it doesn't. By default, MoviePlayer would show each line for two seconds. However, you can adjust the times at which the lines appear and for how long. Note that one has to be sensitive to how much text can fit on the screen of the quicktime movie and how quickly students can read the text.