You’ve downloaded a video file—possibly labeled "NSFS-324"—and an accompanying English subtitle file (.srt, .ass). Your goal: convert this video to a more compatible format, embed or repackage the subtitles, perhaps trim or adjust a specific scene at the 2-minute, 52-frame mark ( 02:00:52 ), and achieve the possible quality while minimizing file size.
. The string likely comes from a filename or a site's search optimization keywords related to high-definition (HD) conversions and English subtitles (engsub). Overview of NSFS-324 Video Code : NSFS-324 Hikari Kizaki (also mentioned in some listings with nsfs324engsub convert020052 min best