In 1956, magnetic recording was still limited as a technology to capturing audio. At that time, Russian emigre engineer Alexander M. Poniatoff and his collaborators at his self-named company AMPEX created the first rotary head videotape recorder-the first step in generations of technology to follow that would change media consumption. Poniatoff's groundbreaking efforts and his legacy of revolution receive a compelling examination here. 60 min. Widescreen; Soundtrack: English; Subtitles: English (SDH); bonus documentary "Cassettes Go Hi-Fi" (2019); promo videos; more.