The Adventures of Errol Flynn
Starring Ian Holm, Errol Flynn, Charles Chauvel, Patrice Wymore, Vincent Sherman, Burt Reynolds, Olivia de Havilland, Richard Dreyfuss, Delmer Daves, David Niven
It's a documentary movie, and has a rating of 8 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Austria.