Public Overridable Function EstimateOutputSize( _
   ByVal duration As Double _
) As Double

Dim instance As CaptureCtrl
Dim duration As Double
Dim value As Double
 
value = instance.EstimateOutputSize(duration)

public virtual double EstimateOutputSize( 
   double duration
)

public:
virtual double EstimateOutputSize( 
   double duration
) 

Public _result As Boolean = False
      Public _form As CaptureCtrlForm = New CaptureCtrlForm()
      Public _capturectrl As CaptureCtrl
      Public Sub EstimateExample()
         ' reference the capture control
         _capturectrl = _form.CaptureCtrl

         ' output file 
         Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_EstimateOutputBitRateExample.avi")

         ' 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
            ' set a video compressor
            _capturectrl.VideoCompressors.H264.Selected = True

            ' set the capture target file
            _capturectrl.TargetFile = outFile

            ' set the capture mode to still and start
            _capturectrl.ReadyCapture(CaptureMode.Video Or CaptureMode.InhibitRun)

            ' get the bit rate estimate
            Dim bitRate As Integer = _capturectrl.EstimateOutputBitRate()

            ' get file size estimate for 60 secs
            Dim fileSize As Double = _capturectrl.EstimateOutputSize(60.0)

            ' set the result to what we expect
            _result = (bitRate <> 0 AndAlso fileSize <> 0.0)
         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 17\Media"
End Class

public bool _result = false;
      public CaptureCtrlForm _form = new CaptureCtrlForm();
      public CaptureCtrl _capturectrl;
      public void EstimateExample()
      {
         // reference the capture control
         _capturectrl = _form.CaptureCtrl;

         // output file 
         string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_EstimateOutputBitRateExample.avi");

         // 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
         {
            // set a video compressor
            _capturectrl.VideoCompressors.H264.Selected = true;

            // set the capture target file
            _capturectrl.TargetFile = outFile;

            // set the capture mode to still and start
            _capturectrl.ReadyCapture(CaptureMode.Video | CaptureMode.InhibitRun);

            // get the bit rate estimate
            int bitRate = _capturectrl.EstimateOutputBitRate();

            // get file size estimate for 60 secs
            double fileSize = _capturectrl.EstimateOutputSize(60.0);

            // set the result to what we expect
            _result = (bitRate != 0 && fileSize != 0.0);
         }
         catch (Exception)
         {
            _result = false;
         }
      }

static class LEAD_VARS
{
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 17\Media";
}