ForceNoRecompressionPreview Property

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public virtual bool ForceNoRecompressionPreview {get; set;}

'Declaration
 
Public Overridable Property ForceNoRecompressionPreview As Boolean

'Usage
 
Dim instance As ConvertCtrl
Dim value As Boolean
 
instance.ForceNoRecompressionPreview = value
 
value = instance.ForceNoRecompressionPreview

public virtual bool ForceNoRecompressionPreview {get; set;}

 get_ForceNoRecompressionPreview();
 set_ForceNoRecompressionPreview(value);

public:
virtual property bool ForceNoRecompressionPreview {
   bool get();
   void set (    bool value);
}

Property Value

true if Forcing No Recompression Preview is enabled; false, otherwise.

Enabling this property slows down the file conversions. Use this when converting input streams without recompression. The default value is false.

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

Copy Code

Public _result As Boolean = False
      Public _form As ConvertCtrlForm = New ConvertCtrlForm()
      Public Sub ForceNoRecompressionPreviewExample()
         ' reference the convert control
         Dim convertctrl As ConvertCtrl = _form.ConvertCtrl

         ' input and output files
         Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi")
         Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_ForceNoRecompressionPreviewExample.avi")

         Try
            ' set the source for conversion
            convertctrl.SourceFile = inFile

            ' set the target output format
            convertctrl.TargetFormat = TargetFormatType.ISO

            ' no recompression for video and audio
            convertctrl.VideoCompressors.Selection = -1
            convertctrl.AudioCompressors.Selection = -1

            ' set the target output file and format
            convertctrl.TargetFile = outFile

            ' enable preview
            convertctrl.Preview = True

                 ' force preview to be active even though the conversion is without recompression
                 convertctrl.ForceNoRecompressionPreview = True

            ' start convert
            convertctrl.StartConvert()

            ' set the result
            _result = True
         Catch e1 As Exception
            _result = False
         End Try

         ' 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 convertctrl.State = ConvertState.Running
            Application.DoEvents()
         Loop
      End Sub

Public NotInheritable Class LEAD_VARS
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
End Class

public bool _result = false;
      public ConvertCtrlForm _form = new ConvertCtrlForm();
      public void ForceNoRecompressionPreviewExample()
      {
         // reference the convert control
         ConvertCtrl convertctrl = _form.ConvertCtrl;

         // input and output files
         string inFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi");
         string outFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_ForceNoRecompressionPreviewExample.avi");

         try
         {
            // set the source for conversion
            convertctrl.SourceFile = inFile;

            // set the target output format
            convertctrl.TargetFormat = TargetFormatType.ISO;

            // no recompression for video and audio
            convertctrl.VideoCompressors.Selection = -1;
            convertctrl.AudioCompressors.Selection = -1;

            // set the target output file and format
            convertctrl.TargetFile = outFile;

            // enable preview
            convertctrl.Preview = true;

            // force preview to be active even the conversion is without recompression
            convertctrl.ForceNoRecompressionPreview = true;

            // start convert
            convertctrl.StartConvert();

            // set the result
            _result = true;
         }
         catch (Exception)
         {
            _result = false;
         }

         // 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 (convertctrl.State == ConvertState.Running)
            Application.DoEvents();
      }

static class LEAD_VARS
{
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

ConvertCtrl Class
ConvertCtrl Members