directshow.net

My task is : I create a graph, attach a SampleGrabber to it, and grab the keyframes using the IMediaSeeking interface after building the graph. The following is what I have done : In the Main method : Type comType = Type.GetTypeFromCLSID ( new Guid ( "e436ebb3-524f-11ce-9f53-0020af0ba770" ) ); IGraphBuilder graphBuilder = (IGraphBuilder) Activator.CreateInstance ( comType ); comType = Type.GetTypeFromCLSID ( new Guid ( "C1F400A0-3F08-11d3-9F0B-006008039E37" ) ); ISampleGrabber sampleGrabber = (ISampleGrabber) Activator.CreateInstance ( comType ); graphBuilder.AddFilter ( (IBaseFilter)

I am creating a project using DirectShow.Net that shows a preview of a webcam view within a windows form using Visual C#. I would like to start with gaining a collection of available video devices so I can choose between either the built in webcam or the USB webcam. I have seen several examples of this being done in C++, e.g. on the msdn " http://msdn.microsoft.com/en-us/library/windows/desktop/dd377566(v=vs.85).aspx ". However as I do not know any C++ I do not know how to convert this code into C#. Roman R. DirectShow.NET sample \Samples\Capture\DxLogo\Capture.cs shows how to do it: // Get

How to call this dialog using Directshow.net? Filter graph David Paxson Something like this would work, assuming you have an IBaseFilter reference: [DllImport("oleaut32.dll", CharSet = CharSet.Auto)] internal static extern int OleCreatePropertyFrame( IntPtr hwndOwner, uint x, uint y, [MarshalAs(UnmanagedType.LPWStr)] string caption, uint objectCount, [MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.IUnknown)] object[] lplpUnk, int cPages, IntPtr pageClsID, Guid lcid, uint dwReserved, IntPtr lpvReserved); public void DisplayPropertyPages(Form form, IBaseFilter filter) { var

I use DirectShowLib .Net to capture images from WebCam. How get state of my WebCam in C#? I mean if it's alredy using by another app? Build a capture graph, such as Camera -> Null Renderer and put it into paused state. If you succeeded, the camera is (was) idle becuase otherwise this third party app would lock it exclusively. You could possibly use IAMResourceControl too, but it's unlikely to be available for a camera device. 来源： https://stackoverflow.com/questions/8655951/get-webcam-status-using-c-sharp