Subtitle Moon.*2009*.1080p.dts.hd.ma.5.1.ac3.bl... -

the opening dialogue to see if the text appears too early or too late.

the exact filename of your video file (excluding the .mkv or .mp4 extension). subtitle Moon.*2009*.1080p.DTS.HD.MA.5.1.AC3.Bl...

results that mention "BluRay", "1080p", or "DTS" in the subtitle filename to ensure the frame rate matches. the opening dialogue to see if the text