Shift the subtitles contained within a
file. Add or remove some seconds to each subtitles so as to be in synch with the sound.
Works offline as a standalone app.
I know there are some online services to do so, but you may lack
connectivity when you want to resynch your subs, or be uncomfortable
with the idea of uploading your subtitles.
Simple, quick and reliable. A backup of the original srt file is
made so as to prevent any error.
Full UTF8 compliant, as one can see on the following diff (1minute
12seconds and 445 f were removed from left to right, if you
want to do the math)