second one actually standalone app and orobable better to be used this way? (while some CinelerraGG advocacy might be good idea considering few Open NLEs work with 32-bit float data even to some degree - I think only Olive and Natron currently, and Natron not quite happy with movie-long files, in my one time try. test.)

It seems to have OpenFX plugin, so Natron itself might work via it.