众所周知,在影象制作及其演示方面广泛应用两种基本介质,即胶片和录象磁带。虽然胶片和磁带记录影象的原理不同,但它们并不是互相抵制的。多年来,在电视工业中早已应用电影胶片来制作电视片,而电影制作人最近也使用电视技术来制作影片。事实上,在胶片和录象磁带之间早已有长久而密切的关系,并在这两种介质的影象转移方面已有很长的历史。电视节目制作者和影片制作人早已发现胶片和录象磁带上的影象可 It is well-known that two basic media, film and video tapes, are widely used in image production and presentation. Although films and tapes record images in different ways, they do not resist each other. For years, motion picture films have been used in the television industry for the production of television films, and filmmakers have also recently used television technology to make films. In fact, there has long been a long and close relationship between films and video tapes and a long history of image transfer between the two media. Television programmers and filmmakers have long found the image on film and video tapes available