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copied!<p>OK,</p> <pre><code>public void CaptureVideo() { int hr = 0; IBaseFilter sourceFilter = null; IBaseFilter audiosourceFilter = null; IBaseFilter asfWriter = null; IFileSinkFilter pTmpSink = null; try { GetInterfaces(); hr = this.captureGraphBuilder.SetFiltergraph(this.graphBuilder); DsError.ThrowExceptionForHR(hr); sourceFilter = FindVideoCaptureDevice(); //return Video source filter audiosourceFilter = FindAudioCaptureDevice(); // return audio source filter // Add Video source filter hr = this.graphBuilder.AddFilter(sourceFilter, "Video Capture"); DsError.ThrowExceptionForHR(hr); // Add audio source filter hr = this.graphBuilder.AddFilter(audiosourceFilter,"Audio Capture"); DsError.ThrowExceptionForHR(hr); //set outputname "Test.avi" .avi type hr = this.captureGraphBuilder.SetOutputFileName(MediaSubType.Avi, "Test.avi", out asfWriter, out pTmpSink); DsError.ThrowExceptionForHR(hr); //render preview video on window form hr = this.captureGraphBuilder.RenderStream(PinCategory.Preview, MediaType.Video, sourceFilter, null, null); DsError.ThrowExceptionForHR(hr); //render Audio preview //hr = this.captureGraphBuilder.RenderStream(PinCategory.Preview, MediaType.Audio, audiosourceFilter, null, null); //DsError.ThrowExceptionForHR(hr); // Render Video to Test.avi hr = this.captureGraphBuilder.RenderStream(PinCategory.Capture, MediaType.Video, sourceFilter, null, asfWriter); Marshal.ThrowExceptionForHR(hr); // Render Audio into Test.avi hr = this.captureGraphBuilder.RenderStream(PinCategory.Capture, MediaType.Audio, audiosourceFilter, null, asfWriter); Marshal.ThrowExceptionForHR(hr); Marshal.ReleaseComObject(sourceFilter); Marshal.ReleaseComObject(audiosourceFilter); SetupVideoWindow(); rot = new DsROTEntry(this.graphBuilder); hr = this.mediaControl.Run(); DsError.ThrowExceptionForHR(hr); this.currentState = PlayState.Running; } catch { MessageBox.Show("An unrecoverable error has occurred."); } } </code></pre>

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