"PROPER" indicates this is the corrected, definitive version of the subtitles for this specific video file. Technical Check

If you are using this file, ensure your video filename matches the subtitle filename (e.g., Run.Silent.Run.Deep.1958.720p.BluRay.x264.mkv ). If the audio and text are still out of sync, you may need to adjust the subtitle delay in your media player (usually 'G' or 'H' keys in VLC).

This subtitle file is a release, which in the scene world means it was issued to fix a technical error (like sync issues, missing lines, or incorrect formatting) found in a previous "internal" or "non-proper" subtitle upload for the 1958 film Run Silent, Run Deep . Release Details

Run Silent, Run Deep (1958) – A classic WWII submarine thriller starring Clark Gable and Burt Lancaster. Format: Optimized for the 720p BluRay high-definition rip.