Watch Patent Nr. 314805 Online Avalaible Now [ FREE ] Select your Language : Finnish engineer Eric Tigerstedt solved the dilemma of sound-on-film already before the First World War. All images and sounds in this short film are produced from the surviving test materials originally created in 1914. Watch movie online - EN Watch Movie trailer Download Links - EN Language SD Quality - EN HQ Quality - EN HD Quality - EN HD Quality - EN 4K Quality - EN 8K Quality - EN