UsingDVDecoder Property

Summary

Gets a value that indicates whether the state of the DV Decoder is in use.

Syntax
C#
VB
C++
public virtual bool UsingDVDecoder { get; } 
Public Overridable ReadOnly Property UsingDVDecoder As Boolean 
public: 
virtual property bool UsingDVDecoder { 
   bool get(); 
} 

Property Value

true if the DV decoder is being used; false, otherwise.

Remarks

If the DV decoder is used, you can change the size of the preview using the DVDecoderResolution property.

Example
C#
VB
using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void UsingDVDecoderExample() 
{ 
   // reference the capture control 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
   // output file 
   string outFile = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_UsingDVDecoderExample.avi"); 
 
   try 
   { 
      // set the video capture device, use your capture device name here 
      if (capturectrl.VideoDevices["USB"] == null) 
         throw new Exception("No USB video device available"); 
 
      capturectrl.VideoDevices["USB"].Selected = true; 
 
      // try to find a USB audio device 
      if (capturectrl.AudioDevices["USB"] == null) 
         throw new Exception("No USB audio device available"); 
 
      capturectrl.AudioDevices["USB"].Selected = true; 
 
      // set the video and audio compressors 
      capturectrl.VideoCompressors.DVVideo.Selected = true; 
      capturectrl.AudioCompressors.AC3.Selected = true; 
 
      // set the target output file and format 
      capturectrl.TargetFile = outFile; 
 
      // set the target output format 
      capturectrl.TargetFormat = TargetFormatType.DVSDAVI; 
 
      // check to see whether we have a video compressor dialog and show it 
      if (capturectrl.HasDialog(CaptureDlg.VideoCompressor)) 
         capturectrl.ShowDialog(CaptureDlg.VideoCompressor, _form); 
 
      // check whether we can capture video and audio 
      if (capturectrl.IsModeAvailable(CaptureMode.VideoAndAudio)) 
      { 
         // ready the capture graph 
         capturectrl.ReadyCapture(CaptureMode.VideoAndAudio | CaptureMode.InhibitRun); 
 
         // check to see whether we are using the DVDecoder 
         if (capturectrl.UsingDVDecoder) 
         { 
            // set the DV resolution to full 
            capturectrl.DVDecoderResolution = DVResolution.Full; 
            // set the result 
            _result = true; 
         } 
 
         capturectrl.FrameRate = 5;       // 5 frames per second  
         capturectrl.UseFrameRate = true; 
         capturectrl.TimeLimit = 10;      // just 10 seconds of capture time 
         capturectrl.UseTimeLimit = true; 
 
         // start the capture process 
         capturectrl.StartCapture(CaptureMode.VideoAndAudio); 
      } 
 
      // we'll loop on the state and pump messages for this example. 
      // but you should not need to if running from a Windows Forms application. 
      while (capturectrl.State == CaptureState.Running) 
         Application.DoEvents(); 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media"; 
} 
Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As CaptureCtrlForm = New CaptureCtrlForm() 
 
Public Sub UsingDVDecoderExample() 
   ' reference the capture control 
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
 
   ' output file 
   Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_UsingDVDecoderExample.avi") 
 
   Try 
      ' set the video capture device, use your capture device name here 
      If capturectrl.VideoDevices("USB") Is Nothing Then 
         Throw New Exception("No USB video device available") 
      End If 
 
      capturectrl.VideoDevices("USB").Selected = True 
 
      ' try to find a USB audio device 
      If capturectrl.AudioDevices("USB") Is Nothing Then 
         Throw New Exception("No USB audio device available") 
      End If 
 
      capturectrl.AudioDevices("USB").Selected = True 
 
      ' set the video and audio compressors 
      capturectrl.VideoCompressors.DVVideo.Selected = True 
      capturectrl.AudioCompressors.AC3.Selected = True 
 
      ' set the target output file and format 
      capturectrl.TargetFile = outFile 
 
      ' set the target output format 
      capturectrl.TargetFormat = TargetFormatType.DVSDAVI 
 
      ' check to see if we have a video compressor dialog and show it 
      If capturectrl.HasDialog(CaptureDlg.VideoCompressor) Then 
         capturectrl.ShowDialog(CaptureDlg.VideoCompressor, _form) 
      End If 
 
      ' check if we have can capture video and audio 
      If capturectrl.IsModeAvailable(CaptureMode.VideoAndAudio) Then 
         ' ready the capture graph 
         capturectrl.ReadyCapture(CaptureMode.VideoAndAudio Or CaptureMode.InhibitRun) 
 
         ' check to see if we are using the DVDecoder 
         If capturectrl.UsingDVDecoder Then 
            ' set the DV resolution to full 
            capturectrl.DVDecoderResolution = DVResolution.Full 
            ' set the result 
            _result = True 
         End If 
 
         capturectrl.FrameRate = 5 ' 5 frames per second 
         capturectrl.UseFrameRate = True 
         capturectrl.TimeLimit = 10 ' just 10 seconds of capture time 
         capturectrl.UseTimeLimit = True 
 
         ' start the capture process 
         capturectrl.StartCapture(CaptureMode.VideoAndAudio) 
      End If 
 
      ' we'll loop on the state and pump messages for this example. 
      ' but you should not need to if running from a Windows Forms application. 
      Do While capturectrl.State = CaptureState.Running 
         Application.DoEvents() 
      Loop 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media" 
End Class 

Requirements

Target Platforms

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Leadtools.Multimedia Assembly