This string is a used in fan-subtitle communities. Let’s break it down:
Always keep the original file before conversion. If the 01:57:33 glitch is in the source video itself, no amount of subtitle fixing will help – you’ll need to re-encode from a clean copy. ipx468engsub convert015733 min top
IPX requires the libipx decoder. If unsupported, use intermediate conversion: This string is a used in fan-subtitle communities