“The SRT text file on subdl.com... will work with people who download this movie and play in VLC... it seems to be synched up nicely with dialogue.” Reddit · r/fullmoviesonyoutube

Adding the .en before .srt helps modern players like Plex display the track correctly as "English" rather than "Unknown". How to Sync if it's "Off"

: This is a standard resource for fan-made subtitles if the official ones are missing from your file.

: Users have specifically recommended the "forhel" version of the SRT file on SubDL for Blu-ray rips.

: Many high-quality 720p/1080p rips are based on the Criterion Collection's digital restoration, which includes professionally timed English and French subtitles. Naming Conventions for Auto-Loading

Are you using a specific like Plex, VLC, or Kodi to watch this? File Naming Convention for Subtitles and Audio - MCEBuddy

For a 720p Blu-ray rip, you should look for .srt files specifically tagged with "BluRay" or "Criterion" to ensure the frame rate matches.

To make your media player (like VLC or Plex) automatically detect the subtitle, the filename must match your video file exactly, with only the language code and extension differing. Video: La.regle.du.jeu.1939.720p.BluRay.FLAC.mkv Subtitle: La.regle.du.jeu.1939.720p.BluRay.FLAC.en.srt