title: How to calculate Framerate using IVMRWindowlessControl9?
body: <p>I'm working on desktop application and using DirectShow. I'm playing live stream in IVMRWindowlessControl9 control.
  i want to calculate framerate at which video plays on IVMRWindowlessControl9 control. how can i do this. i have search
  a lot  but didn't get any method or API to calculate Framerate. If anybody knows how can i calculate it plese do reply. i'm using h264 streaming data for rendering.</p>