Louis,
He rarely mentioned films.  He apparently liked very light fare, of which he
partook regularly in Rapallo.  In the Cantos he praised Disney -a little
thickly, in my opinion.  He knew, unless I'm mistaken, few filmmakers, the
noteable exception being Cocteau.
The most fruitful line of inquiry for you might be the very obvious
comparison of Fennolosa/Pound's "The Chinese Written Character as a Medium
for Poetry" and Eisenstein's writings, particularly as found in Film Form and
Film Sense.
It might be interesting, too, that the theoretical backbone of Cocteau's
practice of film is  almost the opposite of Eisenstein's, whose ideas closely
matched Pounds.  Yet I believe that Pound had great respect for Cocteau as a
visual artist.
Best, Jay Anania