Note: be aware that these forums are now in the process of a major change. As explained on the main forums pages (e.g. "Important Community Announcement" Premiere Pro ), posts from 8/22 through launch (scheduled for Sept 9) will "be lost." So be sure to copy any information you want.
I agree that "transparent" as a background option does not work for Open Subtitling. There is no 0-100 for Open Subtitling background.
Are you trying to use Open Captions or Open Subtitling? They are not the same.
