Hi, would it be possible to add another feature,

namely RewindAfter, that would jump to the end of line. Perhaps you could also add another variable like: Number of frames to rewind (wind) after actual subtitle line, but this is not neccessary.

Thank you,

I use your program with a lot of joy and success. Thank you for your work

Should not be a problem, but if you could explain to me for what purpose do you need this feature to make me more motivated to implement it?

Oh yes,
when you extract subtitles from avi, somehow, you want to compare the results.
So I check extracted sub against original avi with higher speed, usualy 3.5x. And when I see some notable time deviation, I simply jump to the begining of the line. Than I forward one frame and the correct start is confirmed. The number of frames for RewindBefore is set to 0 in this case. This would be also nice for the end of the subtitle line.