After studying in Berlin and a variety of odd jobs, he began his career as a stage director of operettas in Hamburg before starting to make films from 1912 in Berlin. In 1902 he had married the actress Mia May (born Hermine Pfleger) and took his stage name from hers. In 1933 he and Mia, along with many others in the German film industry, emigrated to the United States where he was able to establish himself as director, mainly for Universal Pictures, although his work was mainly on what would be regarded as B movies.