How to Add Text to Video with iMovie in Mac OS X
If you want to place some text onto a video, the iMovie app for Mac is a good place to start. This is good for putting a title onto a movie, placing some basic subtitles on a silent video, captions on a video, or at a specific point in a movie, adding a watermark to video, or the myriad of other reasons you’d want words placed or alongside a movie. You’ll even be able to change the font size, font family, and various aspects of the text displayed on the movie.