UsingDVDecoder Property (CaptureCtrl)

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

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable ReadOnly Property UsingDVDecoder As Boolean

'Usage
 
Dim instance As CaptureCtrl
Dim value As Boolean
 
value = instance.UsingDVDecoder

public virtual bool UsingDVDecoder {get;}

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

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

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 18\Media"
End Class

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 18\Media";
}

Requirements

Target Platforms

Reference

CaptureCtrl Class
CaptureCtrl Members