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POHow to Show Preview in PictureBox?
 

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  1. POHow to Show Preview in PictureBox?
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    <p>my is too record video from webcam using DirectshowLib and c# but during video recoding video preview is also be shown so for this i have done following steps</p> <p>1.i got the available video device</p> <ol> <li><p>init. IFilterGrapth2 object by using <code>Graph = (IFilterGraph2)new FilterGraph();</code></p></li> <li><p>init. ICaptureGraphBuilder2 object by using <code>captureGraph = (ICaptureGraphBuilder2)new CaptureGraphBuilder2();</code></p></li> </ol> <p>4.filter grapth is set to ICaptureGraphBuilder2 object <code>captureGraph.SetFiltergraph(Graph);</code></p> <ol> <li>and then added soursefilterformoniker() and outputfilename()</li> </ol> <p>The full code is as below.it does not any error but it opens preview window separately;i want to show preview on picture box..</p> <p><strong>how to preview window in picturebox?</strong></p> <p>here is my full code</p> <pre><code>using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using DirectShowLib; using DirectShowLib.DMO; using System.Runtime.InteropServices; using System.Drawing.Drawing2D; using System.IO; namespace Cam_Recording_V1_directshow.net_ { public partial class Form1 : Form { string captureDeviceName = string.Empty; IFilterGraph2 Graph = null; IMediaControl m_mediaCtrl = null; public List&lt;DsDevice&gt; AvailableVideoInputDevices { get; private set; } IAMVideoProcAmp vpa; [DllImport("olepro32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)] private static extern int OleCreatePropertyFrame(IntPtr hwndOwner, int x, int y, string lpszCaption, int cObjects, [In, MarshalAs(UnmanagedType.Interface)] ref object ppUnk, int cPages, IntPtr pPageClsID, int lcid, int dwReserved, IntPtr pvReserved); public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { IBaseFilter capFilter = null; IBaseFilter asfWriter = null; IFileSinkFilter pTmpSink = null; ICaptureGraphBuilder2 captureGraph = null; object o; // //Get list of video devices // AvailableVideoInputDevices = new List&lt;DsDevice&gt;(); DsDevice[] videoInputDevices = DsDevice.GetDevicesOfCat(FilterCategory.VideoInputDevice); AvailableVideoInputDevices.AddRange(videoInputDevices); if (AvailableVideoInputDevices.Count &gt; 0) { // //init capture graph // Graph = (IFilterGraph2)new FilterGraph(); captureGraph = (ICaptureGraphBuilder2)new CaptureGraphBuilder2(); // //sets filter object from graph // captureGraph.SetFiltergraph(Graph); // //which device will use graph setting // Graph.AddSourceFilterForMoniker(AvailableVideoInputDevices.First().Mon, null, AvailableVideoInputDevices.First().Name, out capFilter); captureDeviceName = AvailableVideoInputDevices.First().Name; #region WMV // //sets output file name,and file type // captureGraph.SetOutputFileName(MediaSubType.Asf, /*DateTime.Now.Ticks.ToString() +".wmv"*/ "test.wmv", out asfWriter, out pTmpSink); // //configure which video setting is used by graph // IConfigAsfWriter lConfig = asfWriter as IConfigAsfWriter; Guid cat = new Guid("8C45B4C7-4AEB-4f78-A5EC-88420B9DADEF"); lConfig.ConfigureFilterUsingProfileGuid(cat); #endregion captureGraph.RenderStream(PinCategory.Preview, MediaType.Video, capFilter, null, null); captureGraph.RenderStream(PinCategory.Capture, MediaType.Video, capFilter, null, asfWriter); m_mediaCtrl = Graph as IMediaControl; m_mediaCtrl.Run(); } else { MessageBox.Show("Video Capture Device Not Found!!"); button1.Visible = false; } } </code></pre>
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