I parse video feeds of [any] colorbars and I'm interested in your Flash Injection feature for the purpose of displaying when a mouseclick, keyboard key, or gamepad button is pressed, appears to be a promising feature if it's on par with a videointerrupt method (methodology) which requires an external device to perturb an analog video signal as it also sends a command instead of this method which overlays a white rectangle when clicks are registered by that application.
side note I am concerned about the ability to hook however, nvidias FCAT overlay and PresentMon rainbow strip don't have the breathe of compatibility that guru3Ds RivaTuner Statistics Server RTSS appears to have.