Movies that is shorter... examples

Your understanding is correct. Once a system of coaxial cable and microwave relays was established in 1951, live broadcasts originating in the Eastern time zone could be received in others, where they could be kinescoped for rapid processing and later broadcast at the appropriate time. In this way, the "live" 10:00PM Eastern broadcast of What's My Line? could be rebroadcast locally via kinescope at 10:00PM Pacific three hours later.

The problem with the process involved a degradation in image quality even in first-generation copies that was inherent in the system itself, which consisted of nothing more complicated than aiming a motion picture camera at a studio monitor and photographing the moving images displayed there. With the NTSC system's already-limited resolution of only 480 visible lines of picture information, the practice of photographing a video image on film put the result at a disadvantage.

Once videotape recording became available to broadcasters in 1956, the same process could be accomplished with considerably less generational loss in image quality. Although any analogue system using either film or videotape produces loss in quality from one generation to the next, that exhibited in a first-generation videotape made on the west coast from a live east coast broadcast was imperceptible to home viewers.