title: Changing input from composite to s video directshow
body: <p>I have a pinnancle video capture device and  I wrote a DirectShow based application which works well by composite input but with  S_Video First  there is nothing to show through S_Video input (although in trace I see everything is ok!) till I run pinnacle studio. after that everything goes well!The next problem is switching between S_Video and Composite. If I change the input from S_Video to Composite, It  won't show anything.I'm wondering what is different between S_Video and Video(Composite)and pinnancle sutdio how  affects the capturing after closing;</p>