RCA had discussions with Sony, but RCA felt the recording time was too short, insisting that they needed at least a 4-hour recording time (reportedly because that was the length of an average televised American football game).
RCA曾与Sony讨论过，但RCA觉得录制时长实在太短了，并坚持他们需要至少4小时的录制时长（据闻这是因为一场电视转播的美式足球赛平均时长是4小时）。