World Caption is a free program for adding captions to a QuickTime compatible video, using a transcript of that video. While World Caption cannot be used to generate a transcript, it makes the process of synchronizing a transcript to video simple, and allows quick and easy generation of captions.
World Caption accepts UTF-8 encoded text files, which means it can handle a wide number of languages - including languages with non-Latin character sets such as Japanese.
World Caption allows addition of any number of tracks to the video. This allows the creation of caption tracks for several languages.
World Caption requires Mac OS X version 10.4 or later. It is offered free though the School of Journalism and Mass Communication at the University of Wisconsin - Madison