Eternals.2021.imax.1080p.webrip.x264-r...: Subtitle

: Since your file is from the RARBG group, downloading a subtitle with "RARBG" in the filename increases the likelihood that it is perfectly synced to that specific encode.

: A massive database that often includes "IMAX" specific tracks which account for the shifting aspect ratios or specific frame timings of that version. subtitle Eternals.2021.IMAX.1080p.WEBRip.x264-R...

: For many media players (like VLC), if you rename the subtitle file to match your movie's filename exactly and keep them in the same folder, the subtitles will load automatically. : Since your file is from the RARBG