For a high-quality BluRay rip like "An.Affair.to.Remember.1957.720p.BluRay", you should look for .srt files that match the frame rate (usually 23.976 fps) of your video file.
: A massive database where you can filter by language and resolution. subtitle An.Affair.to.Remember.1957.720p.BluRay...
If your subtitles don't line up with the dialogue, it's usually due to a difference in frame rate or a "delay" at the beginning of the video (common in BluRay versions with studio intros). For a high-quality BluRay rip like "An