My other question is about the Dharani chapter of the Lotus Sutra. What is the meaning of the dharanis pronounced by the persons in that chapter ?
Depends who you ask, and what kind of meaning you are looking for.
Hurvitz's translation of the Lotus Sutra attempts to translate each of the dharani (in the notes). By contrast, if you ask someone who practices these dharani regularly, that person will say that the meaning is in the practice itself and not in the etymology.
First I'd like to thank the first user to reply for providing the transliterations of the dharanis I'm referring to.
Secondly I'd like to thank Tatsuo for the videos which I encountered a few years ago. Yes they are the ones I was looking for.
In reply to jikan: I am looking for both the etymological meanings for the dharanis and the commentary of the various schools on these dharanis from the various schools of Nichiren Buddhism.