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近几年来，VCD机发展迅猛，已占有一定的市场。但随着科技进步，人们对VCD的功能及互换性提出更高的要求。由于VCD存在图像清晰度不高、“马赛克”多等缺陷，因此要提高产品质量必须从格式上作出改进，以MPEG2可变码率编码代替MPEGI编码，使图像水平分辨率达到350线以上，与现
In recent years, VCD machine developed rapidly, has occupied a certain market. But with the progress of science and technology, people put forward higher requirements on the function and interchangeability of VCD. Because of the existence of VCD image clarity is not high, “mosaic” and other defects, to improve the quality of products must be improved from the format to MPEG2 variable bit rate encoding instead of MPEGI encoding, the image horizontal resolution of 350 lines or more, and Now