Since this is a robotics centered project I am going to try and ask here. I've been looking for a day now for a program which will stream video and add text. ffmpeg will add the text but I want the text to change. The text will have telemetry data from the sensors on my robot hense it needs to be dynamic. Think of it just like a heads up display. This would seem so common that there should be ready made stuff for it. Does anyone know where to look?