Some Movie Facts That Will Blow Your Mind!
Technical improvements added length (reaching 60 minutes for a feature film in 1906), synchronized sound recording (mainstream since the end of the 1920s), color (mainstream since the 1930s) and 3D (mainstream in theaters since the first decade of the 21st century). Sound ended the necessity of interruptions of title cards, revolutionized the narrative possibilities for filmmakers, and became an integral part of moviemaking.