Overlay Mixer or Renderer to parse info from DVD stream

[CaptainBli]

I have an interesting question. I want to be able to parse some info from the video stream on DVD playback. But that means that I need to access the stream before it is rendered. What can I do to get the IMediaSamples from the Filter Graph?

 

I have looked around a bit looking for some method. When I try to connect one of my own filters to the decoder I get errors. Apparently I need some sort of overlay or renderer that will take the right type of pin connections for the ins and outs. I really need to be directed to a sample or some code that will allow me to create such a filter; an overlay or something like it.

 

Thank you.