Extend subtitle display time as long as possible

[JJon]

Guess it's an already asked question, but couldnt find the correct keyword. Please, forgive this first post of a videohelp.com newbie.

I have some subtitles.
They are synchronized in order to appear when the actor start talking and disappear when the actor has finished.
I wanna extend the display time of each sub line as long as possible, until the next subtitle start time.

I'm using SubtitleEdit, Subtitle Workshop. Or I can use everything. Just thanks for any advice.

[Nikse]

In Subtitle Edit you can use Tools -> Adjust durations -> Add one second (or something else) to all durations (it will not create overlapping subtitles)

I sure SW can do the same.