Born in Rava-Ruska, Austria-Hungary in 1903, Reinert directed films in France, Great Britain, Switzerland and Austria as well he directed in co productions, associating different countries: Austria, France, Italy, West Germany, Great Britain and the United States. He died in Paris in 1953. He directed among others the following actors and actresses: In Great Britain: Eva Bartok, Bebe Daniels, Bonar Colleano, Charles Farrell, Tom Helmore, Barbara Kelly, Gina Lollobrigida, Lana Morris and Lupe Vélez.
In Austria: Rosa Albach-Retty, Axel von Ambesser, Cornell Borchers, Otto Wilhelm Fischer, Gustav Fröhlich, Attila Hörbiger, Hans Gustl Kernmayr, Franz Lederer, Marianne Schönauer, Anton Walbrook and Paula Wessely.
In France: Michel Auclair, Raymond Bussières, André Claveau, Jean-Roger Caussimon, Claude Dauphin, Danièle Delorme, Arthur Devère, Dora Doll, Marcel Duhamel, Pierre Etchepare, Suzanne Flon, Louis de Funès, Margo Lion, Luis Mariano, Marcello Mastroianni, Georges Pitoëff, Dany Robin, Noël Roquevert, Louis Salou, Anne Vernon, Henri Vidal and Jean Vilar. Emil East. Reinert, Emile East. Reinert, Émile East Reinert, East. East. Reinert, Electrical Engineer Reinert.