We have MacCaption software installed on four different machines. The program requires the USB dongle to run so we just move it around to an open computer.
Generally, our person can close caption a simple (ie. music, narrator, one voice at a time like on-screen interviews or actor) one-hour show in about 5 hours if we have a transcript of the show before hand. She was much longer the first time or two but is gradually getting faster and faster. We only do about one show a month.
A render for a one-hour show takes about 30 minutes on a Dual2G G5.
David Priest
Editor, Shadow Play FIlms