I updated my transcripts script for mpv... I added Rumble support.

>This mpv Lua script automatically downloads and cleans up YouTube and Rumble video transcripts and saves them as plain text (.txt) files. It uses yt-dlp to download transcripts, removes unnecessary formatting, and saves a clean version for easier reading or recall.
>Have you ever watched a YouTube or Rumble video and, weeks or months later, wanted to refer to it but couldn't remember the title or find it again?

https://github.com/nick-s-b/mpv-transcript

Anyway, I'm not sure how many people find this useful but I use it at least once a week and has saved me few times when the videos just deleted from YT and I at least had a transcript.