I have been thinking for a long time that we do not have (to the best of my knowledge) a good transcript formatter, and that Transformers should be part of the solution - a huge wealth of material is on YouTube, and its subtitles do not use punctuation.

I can confirm that requesting LLMs to format bare subtitles adding punctuation (from commas to paragraphs, with quote marks, dashes, colons etc.) can work very well.

It may seem a minor feature, but it is something that information consumers easily benefit from (when you need to process material in video format you can download the subtitles, add formatting with an automation, then efficiently skim, or study, or process transcripts and video together...).