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随着数字技术的飞速发展,基于数字视频信号压缩技术的数字录像机和计算机非线性编辑系统给视频领域带来质的飞跃,数字技术应用遍及电视采集、制作、编辑、播出的各个环节,广播电视设备数字化已成为一种必然趋势。就采编设备而言,数字摄录像机与模拟设备相比,具有性能稳定,指标一致性好,复制能力强,磁带保存期长,维护运行成本低等诸多优点。由于数字摄录像机大部分采用数字压缩技术,因此在视频传输和非线性编辑方面有其独特的优势,随着科技的发展和成本的降低,数字摄录设备的价格也逐渐降低,电视设备的数字化已不再是一种梦想,而且已逐
With the rapid development of digital technology, digital video recorders and computer non-linear editing systems based on digital video signal compression technology have brought a qualitative leap to the field of video. Digital technology has been applied in all aspects of television collection, production, editing and broadcasting. Digital television equipment has become an inevitable trend. As far as editing equipment is concerned, digital video recorders have many advantages over analog devices, such as stable performance, good index consistency, strong copy capability, long tape storage period and low maintenance cost. Digital video recorders are mostly used digital compression technology, video transmission and non-linear editing has its unique advantages, with the development of science and technology and lower costs, the price of digital video recording equipment is also gradually reduced, the digitization of television equipment Is no longer a dream, and has been by