Alfred Hitchcock filmography the run. It also featured the first of his famous cameo appearances. Two years later he directed "Blackmail" (1929) which was his first sound film. In 1935 Hitchcock directed "The 39 Steps". Three years later he directed "The Lady Vanishes," starring Margaret Lockwood and Michael Redgrave. Hitchcock's British films – and many of his early American ones – are often mistakenly believed to be in the public domain. In fact, all of his films are under copyright in the US and UK. Nonetheless, bootlegs of his work continue to be widely disseminated. In 1940, Hitchcock transitioned to Hollywood productions, the
Stereophonic sound of the first stereo cable stations was The Movie Channel, though the most popular cable TV station that drove up usage of stereo simulcasting was MTV. Japanese television began multiplex (stereo) sound broadcasts in 1978, and regular transmissions with stereo sound came in 1982. By 1984, about 12% of the programming, or about 14 or 15 hours per station per week, made use of the multiplex technology. West Germany's second television network, ZDF, began offering stereo programs in 1984. In 1979, "The New York Times" reported, "What has prompted the [television] industry to embark on establishing high-fidelity [sound] standards now,