I would like to know the meaning of the preview parameter of the method, as I do not find references in the documentation
Let me add to documentation:
Preview: Pass true to get the preview pin or pass false for the capture pin instead.
ook. it’s exactly my prediction.
In none of the 3 cameras I have do I get a preview interface. So maybe I should add a SmartTee Filter right after? how can i do this?
I think I have entered the SmartTee. Now I have to understand how to split the preview stream on a VideoRenderer and the capture stream on a Mux / FileWriter
@Christian_Schmitz , please, I have a last question.
ok, with true I obtain the preview pin, with false the capture preview.
But, then, How can I obtain the STILL pin? 
Sorry, I don’t know all details.
But I know the DirectShowBaseFilterMBS class has an EnumPins method to query the pins. That would give you DirectShowPinMBS objects and you can check their category.
I see we miss some methods on DirectShowPinMBS class. I’ll add them for next pre-release.