For a common BluRay release, these reputable databases are your best bet. You should look for files labeled "1080p," or "720p" to ensure the timing matches the frame rate of your video:
The filename you mentioned is a standard "scene" release. To get the subtitles to play automatically: (the most common format). subtitle Back.to.the.Future.1985.1080p.720p.Blu...
: Go to View > VLSub . It will automatically search for subtitles based on the hash of the file you are currently playing, ensuring a perfect sync. For a common BluRay release, these reputable databases
: Specifically tailored for popular BluRay rips. 2. How to Match the Subtitle to Your Video For a common BluRay release