I downloaded subtitles which are very messed up, different parts of the subtitles have different delays. If I adjust the very first subtitle, later on they're out of sync again, and it happens several times throughout the whole subtitles. I downloaded Subtitle Workshop and learned how to adjust different parts using Add subtitle/video synchonization point button. I found at which point of the movie the subtitles go out of sync again and adjusted them, and repeated it as many times as necessary.

However, after I adjust the subtitles to the movie and save the file, when I open it again, the time when each subtitle starts has shifted. If I for example set the start of the first subtitle to frame 315, when I reopen the file, the frame will be moved to 236. It also seems that the same scene in the movie has different timing as I play it again. For example, one particular scene starts at 00:06:12,527, and when I open the movie again, it will start at 00:07:23,263. I tried working both in time and frames mode. I think the frames markings stay the same for the movie, but when I adjust subtitles working with the frame numbers, save them and open again, yet again they would be changed.

I tried searching through the old posts to find if anyone else has similar problems, the only post I found that approximately describes my problem is this one: https://www.videohelp.com/forum/archive/t273151.html

Do you know how to fix this? Or should I maybe try and download VisualSubSync, if it's better to fix my problem?

Thank you very much for your help!