If you need to re-encode and burn subtitles from that cut point:
Here is a breakdown of what this specific string tells us about the file. kop58engsub convert014051 min
Thus, the user likely has a file kop58 (no extension specified) that contains an English subtitle track, and they wish to convert it, possibly starting from or focusing on the 01:40:51 mark. If you need to re-encode and burn subtitles
: The "KOP" prefix is most commonly associated with the King of Prism series, a spin-off of Pretty Rhythm . This franchise focuses on "Prism Stars" and their competitive performances. and they wish to convert it
(often referred to as "Dizi") that have been subtitled for English-speaking audiences.
ffmpeg -i video.mp4 -ss 01:40:51 -t 60 -c copy output_clip.mp4