动态视频汉字字符叠加器(VDM)可以广泛用于公路收费系统、银行柜员制、电视监控等工业控制场所，也可用于车站、码头、机场等场所的广告、宣传、信息提示,此源码实现视频的字符叠加。-Chinese characters superimposed (VDM) can be widely used in highway toll system, bank teller system, TV monitoring of industrial control and other places, can also be used for stations, docks, airports, and other places of advertising, promotion, information tips This source of the video OSD.