Marilyn in Manhattan
Starring Cynthia Adler, Ben Gazzara, Joshua Greene, Milton H. Greene, Amy Greene-Andrews, Arthur Miller, Marilyn Monroe, Alex Monsky, Donald Spoto, Ellen Burstyn
It's a documentary movie, and has a rating of 6.1 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Austria.