How to move subtitles?

Perhaps somebody else can confirm... but I'm 99% sure you cannot programatically on the fly move a standard subtitle stream. The solution though is fairly easy... Positioning for standard subtitles is defined in the stream, so when you prepare the stream for muxing, create two streams with the subs in your two different positions at which time you could programtically on the fly switch between the two streams at the users request.

probably not the solution you wanted... but it is a solution.

_scott