If the dialogue is slightly off, you don’t need a new file. Most players have "hotkeys" to shift subtitle timing:
: Press 'H' to delay the subtitle or 'G' to speed it up. MPC-HC : Use 'F1' and 'F2' to adjust the delay. subtitle The.Northman.2022.720p.WEBRip.x264.AAC...
How to Find and Sync Subtitles for The Northman (2022) WEBRip If the dialogue is slightly off, you don’t need a new file