The task is called 'forced alignment', take a look at aeneas and other projects at https://www.readbeyond.it/ https://www.readbeyond.it/ :) IIRC, Aeneas has som

The task is called 'forced alignment', take a look at aeneas and other projects at https://www.readbeyond.it/ https://www.readbeyond.it/ :) IIRC, Aeneas has some features for handling extra text and the beginning/end of the book, while abridgement etc. isn't handled.