In the early days of television, all programs originated from one of two sources: they were live broadcasts or they were broadcasts of programs that had originally been produced on film. Initially, there was no electronic means of storing the television image, and those programs that were aired live often disappeared forever—they were seen once at the time of the broadcast and then they were gone for good. The only way to save a live broadcast was to record the picture and sound by pointing a film camera at a television monitor during the live broadcast. Today, such film recordings of television programs, called kinescopes, provide the only record of many early television broadcasts.

Although kinescope recordings ...

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