Как подключиться к (композитному или svideo порту) карте caputer и отображать живое видео в приложении c# windows form?

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I have written a C# windows form project for a doctor, that connects to Endoscopy medical camera (it has composite & Svideo ports ), My app found Capture Device , but
no  video shown on any of composite & Svideo ports  :( 
i have downloaded  DirectX.Capture.dll & DShowNET.dll and its sample from  "https://www.codeproject.com/Articles/3566/DirectX-Capture-Class-Library"  but no video displays yet. (model of capture card  is: SAA7130)
please help me, or send me an example project...
my email is:  [REMOVED]
my telegram link is:  [REMOVED]
thank you.

Что я уже пробовал:

я пробовал примеры Directx. capture в codeproject.com но пока никаких видеодисплеев...

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