However, it was not until the 1960s that in-flight entertainment (other than reading, sitting in a lounge and talking, or looking out the window) was becoming mainstream and popular. In 1961, David Flexer of Inflight Motion Pictures developed the 16mm film system for a wide variety of commercial aircraft. This replaced the previous 30-inch-diameter film reels. It was also in the same year when the first ever feature film titled By Love Possessed was shown on a regular commercial airline flight.[citation needed]
In 1963, AVID Airline Products developed and manufactured the first pneumatic headset used on board the airlines and provided these early headsets to Trans World Airlines. These early systems consisted of in-seat audio that could be heard with hollow tube headphones. In 1979 pneumatic headsets were replaced by electronic headsets. The electronic headsets were initially available only on selected flights and premium cabins whereas economy class still had to make do with the old pneumatic headsets.[citation needed]
Throughout the early to mid-1960s, some in-flight movies were played back from videotape, using early compact transistorized videotape recorders made by Sony (such as the SV-201 and PV-201) and Ampex (such as the VR-660 and VR-1500), and played back on CRT monitors mounted on the upper sides in the cabin above the passenger seats with several monitors placed a few seats apart from each other. The audio was played back through the headsets.