Journey Back to Oz
Starring Milton Berle, Herschel Bernardi, Paul Ford, Margaret Hamilton, Jack E. Leonard, Paul Lynde, Ethel Merman, Liza Minnelli, Mickey Rooney, Risë Stevens
It's a comedy and family movie, and has a rating of 5.8 out of 10 from Imdb which is fairly okay for this kind of movie.
Watch it here
Not found streaming from Austria.