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MPEG-4与MPEG-1和MPEG-2视频处理方式的最大区别是在MPEG-4中引入了视频对象VO（VideoObject）的概念。对MPEG-4基于内容的视频编码方式进行了描述，并重点分析了MPEG-4视频编码算法的结构特点。
The biggest difference between MPEG-4 and MPEG-1 and MPEG-2 video processing is the concept of video object VO (VideoObject) introduced in MPEG-4. The MPEG-4 content-based video encoding is described, and the structural features of the MPEG-4 video encoding algorithm are analyzed.