Wait: this command does shift subtitle timestamps automatically. Instead, better to extract full subtitles, then use a dedicated tool:

In the world of digital media sharing and archival, strings like nsps445engsub convert013008 min

: This indicates that the file has undergone a transcoding process, moving from a raw production format to a more compressed, web-friendly format like MP4 or MKV.

A user-created or scene-released video file (possibly an anime episode, fan subtitle project, or archived TV capture) named nsps445engsub.mkv , and the user wishes to convert it starting at 01:30:08 minutes into a trimmed 30-minute segment (the min part). Alternatively, they want to convert the subtitle stream from line 13008 to a different format.

nsps445engsub convert013008 min
nsps445engsub convert013008 min nsps445engsub convert013008 min