This indicates the subtitles are timed for a Blu-ray rip encoded with the XviD codec. Common next steps:
It looks like you've provided a filename for a subtitle file for the movie, specifically a BRRip XviD version with Slovenian subtitles (SLOSubs). subtitle Monster.Hunter.2020.SLOSubs.BRRip.XviD...
The fantasy/action movie starring Milla Jovovich. SLOSubs: These are Slovenian (Slovenski) subtitles. This indicates the subtitles are timed for a
Ensure the subtitle file (usually ending in .srt ) has the exact same name as your video file (e.g., Monster.Hunter.2020.mp4 and Monster.Hunter.2020.srt ) and keep them in the same folder. Most media players like VLC will then load them automatically. subtitle Monster.Hunter.2020.SLOSubs.BRRip.XviD...