FilterVideoKeyer
该视频叠加Filter是在陆其明的字幕叠加filter的基础上修改成功的，Filter继承了CTransInPlaceFilter，添加了叠加帧位置控制接口，并暴露属性页，在CTransInPlaceFilter上增加了一个输入Pin,即叠加视频输入Pin,实现了两路视频一路输出的效果。源码在Window xp, VC++6.0 DSK9.0环境下编译通过，生成Hqvk.ax,注册后即可使用。-the Video Filter is superimposed on the ground out of its filter subtitles superimposed on the basis of the amendment is successful , Filter inherited CTransInPlaceFilter. added to the stack frame position control interface, and exposed attribute pages, CTransInPlaceFilter increase in the importation of a Pin. that is superimposed video input Pin, achieving two way video output results. FOSS in Window xp, VC 6.0 compiler DSK9.0 environment through, Hqvk.ax formation, registration can be used.