O'mast Poster O'mast Amazon » eBay » The film "O'mast" is a 67 minute biography / documentary from 2011.. O'mast Details Title: O'mastYear: 2011Genres: Biography, documentaryDuration: 1h 7m Rate this title Have you seen O'mast? Rate it between 1 to 10 below. Log in to your account if you want to rate this title.