Select pin in dshow devices

[giusanny]

I would like to choose a pin (crossbar filter or port) of a more input video capure device

ffmpeg -f dshow -i video="Capture Device":port=01 (or pin or crossbar)

probably this could help http://msdn.microsoft.com/en-us/library/windows/desktop/dd373520(v=vs.85).aspx

thanks a lot