Avoid dubbing. The search should prioritize the original Danish audio track (DTS or AC3, 2.0 mono) because the actors' vocal performances—especially Nørby’s controlled Icelandic accent—are critical to the story.
You mentioned "High Quality" regarding the movie itself. Please note that there is no official high-definition (1080p/4K) Blu-ray release with English subtitles widely available. Most "high quality" versions found online are: mors hus1974 english subtitle high quality
If you find a version claiming to be HD, it is likely an upscale. For the best viewing experience, look for a file labeled "DVDRip" or "TVRip", as these usually have the best native resolution available for this specific title. Avoid dubbing
Since the film is in Norwegian, you need a standalone subtitle file. Do not rely on "auto-generated" subtitles on streaming sites, as they are often inaccurate for Norwegian dialogue. If you find a version claiming to be