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数字摄像机兴起已有十多年的历史,随着数字技术不断创新,数字摄像机的编解码记录方式也一直在不断演进。后高清时代的编码采样方式,不得不从2004年HDV的兴起说起,时至今日,索尼HDV系列的经典机型HVR-Z5C仍然在索尼官网上销售。从十余年来高清发展的编码演进来看,分辨率、码流、色彩采样率、比特率在不断提升,其终极目的就是为了能够获得更高质量的影像。一方面,各厂商也在努力推陈出新,这期间的屡次变革都由数字摄像机生产厂家推动;另一方面,市场需求以及影视节目制作人发出的信号反过来促使厂商进行技术的革新。
Digital video cameras have been around for more than 10 years. With the continuous innovation of digital technologies, the encoding and decoding of digital video cameras has been continuously evolving. After the HD encoding and sampling methods, had to start from the rise of HDV in 2004, up to now, the Sony HDV series of classic models HVR-Z5C is still sold on Sony’s official website. Judging from the evolving code of HD in more than ten years, the ultimate goal of resolution, code stream, color sampling rate and bit rate is to obtain higher quality video. On the one hand, manufacturers are also trying hard to make innovations. During this period, many changes have been made by digital camera manufacturers. On the other hand, market demand and the signals sent by film and television producers have in turn prompted manufacturers to make technological innovations.