You say it fixes it but resplitting with AI? messes the formatting (and furigana for some reason…) so much that I’m not even sure it’s an upgrade. It is really disheartening to see what they have done to Japanese.
At any rate, I know this is not what you asked for but you could use this to resplit an entire course. It’s less hassle if and only if you can do all your imports upfront.
Example, from importing https://www.youtube.com/watch?v=55fGhDarinE&ab_channel=SteveKaufmann-lingosteve.
Without resplitting (ok formatting, bad segmentation):
With resplitting (bad formatting, ok segmentation):
Proof of furigana completely buggy after resplitting (notice the two 億):
