Just call ConnectFrontEnd followed by RenderOutputPins . Be sure to release the interface when you are finished using it. Interface Retrieves the timeline that the render engine is currently using. It receives the value NULL if there is no timeline. Be sure to release the interface when you are finished using it.
Interface Retrieves the vendor string.
Pointer to a variable that receives a BSTR containing the vendor string. The method allocates memory for the string. The application must call SysFreeString to free the memory. Interface Creates the previewing portion of the filter graph. Before calling this method, call ConnectFrontEnd to build the front end of the graph.