If you already have a video file like When.Saturday.Comes.1996.1080p.BluRay.x264.mp4 :
Because different BluRay or DVD rips (1080p vs. 720p) may have slightly different start times: subtitle When.Saturday.Comes.1996.1080p.720p.Bl...
: If you download a subtitle file manually from a site like OpenSubtitles , place it in the same folder as the movie. If you already have a video file like When