MenuLoop Property

Gets or sets a value that indicates whether the menu background loops continuosly.

Syntax

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

[DispIdAttribute(12)]
bool MenuLoop {get; set;}

'Declaration
 
<DispIdAttribute(12)>
Property MenuLoop As Boolean

'Usage
 
Dim instance As ILTDvdWriter
Dim value As Boolean
 
instance.MenuLoop = value
 
value = instance.MenuLoop

[DispIdAttribute(12)]
bool MenuLoop {get; set;}

DispIdAttribute(12)
get_MenuLoop();
 set_MenuLoop(value);

[DispIdAttribute(12)]
property bool MenuLoop {
   bool get();
   void set (    bool value);
}

Property Value

True if the menu background loops continuously.

False if the menu background video is played only once. This is the default value.

Remarks

Gets or sets value that indicates whether the menu background loops continuously.

Do not set this property to True if the menu background is a still image. If the background is a still image, there is no reason to loop since the image never changes.

Do not use the menu loop if the background contains a very short video. Some DVD drives take some time to restart playing the background and if it is a short video that can cause undesired effects. If you still want to use menu loop with a short video clip, obtain better results by concatenating the clip several times and using the longer clip as a menu. For example: To use a 1-sec clip as the menu in a continuous loop. Concatenate the clip 8 times, creating an 8-sec video clip (the original clip playing 8 times). Now use this 8-sec clip as the background and enable the menu loop.

Example

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

Copy Code

Public _result As Boolean = False
Public _form As ConvertCtrlForm = New ConvertCtrlForm()
Private _convertCtrl As ConvertCtrl = Nothing
Private _dvdWriter As LTDvdWriter = Nothing

Public Sub DvdWriterExample()
   ' reference the convert control
   _convertCtrl = _form.ConvertCtrl

   ' source files for DVD content
   Dim inFile1 As String = "mediafiles\input\DVDWriter_Source1.avi"
   Dim inFile2 As String = "mediafiles\input\DVDWriter_Source2.avi"
   Dim inFile3 As String = "mediafiles\input\DVDWriter_Source3.avi"
   Dim inFile4 As String = "mediafiles\input\DVDWriter_Source4.avi"
   Dim backgroundImageFile As String = "mediafiles\input\DVDWriter_Background.jpg"
   Dim outFile As String = "mediafiles\output\ConvertCtrl_DvdWriterExample_DVD"

   Try
      _dvdWriter = Nothing

      _convertCtrl.Preview = True
      _convertCtrl.PreviewVisible = True

      ' setup the converter
      _convertCtrl.TargetFormat = TargetFormatType.DVD
      _convertCtrl.VideoCompressors.Mpeg2.Selected = True
      _convertCtrl.AudioCompressors.MpegAudio.Selected = True

      ' Create a DVD image with 2 titles, each contains 2 chapters: 
      ' Source video
      _convertCtrl.SourceFile = inFile1

      ' Destination image folder
      _convertCtrl.TargetFile = outFile

      ' Retrieve the DVD Writer interface 
      _dvdWriter = TryCast(_convertCtrl.GetSubObject(ConvertObject.Sink), LTDvdWriter)

      _dvdWriter.RemoveAllMenuTitles()
      _dvdWriter.MenulessTitlePlay = False

      ' Set the TitleBreak property to false. 
      ' This will prevent the title from being written immediately after the conversion
      _dvdWriter.TitleBreak = False

      _dvdWriter.AddMenuTitle("Title 1", -1)

      ' Write the first chapter in the first title
      _convertCtrl.StartConvert()

      Do While _convertCtrl.State <> ConvertState.Stopped
         Application.DoEvents()
      Loop

      _convertCtrl.ResetSource()

      Dim highPart As Integer = 0
      Dim lowPart As Integer = _dvdWriter.GetBytesWritten(highPart)
      Dim written As Int64 = highPart << 32 Or lowPart

      _convertCtrl.SourceFile = inFile2
      _convertCtrl.StartConvert()

      Do While _convertCtrl.State <> ConvertState.Stopped
         Application.DoEvents()
      Loop

      _convertCtrl.ResetSource()

      ' Prepare for the second title
      ' Set the TitleBreak property to TRUE, so the the current title can be flushed
      _dvdWriter.TitleBreak = True

      ' Disable Overwrite so the title will be appended to an existing dvd image
      _dvdWriter.Overwrite = False
      _dvdWriter.MenulessTitlePlay = False

      ' Set the TitleBreak property to FALSE. 
      ' This will prevent the title from being written immediately after the conversion
      _dvdWriter.TitleBreak = False
      _dvdWriter.AddMenuTitle("Title 2", -1)

      ' Write the first chapter in the second title
      _convertCtrl.SourceFile = inFile3
      _convertCtrl.StartConvert()

      Do While _convertCtrl.State <> ConvertState.Stopped
         Application.DoEvents()
      Loop

      _convertCtrl.ResetSource()

      ' Write the second chapter in the second title
      _convertCtrl.SourceFile = inFile4
      _convertCtrl.StartConvert()

      Do While _convertCtrl.State <> ConvertState.Stopped
         Application.DoEvents()
      Loop

      _convertCtrl.ResetSource()

      ' Close the second title
      _dvdWriter.TitleBreak = True

      _dvdWriter.TitleMenu = True
      _dvdWriter.MenuLoop = True
      _dvdWriter.MenulessTitlePlay = False

      ' Write the second chapter in the second title
      _convertCtrl.SourceFile = backgroundImageFile
      ChangeStillImageDuration(1.0)

      _convertCtrl.StartConvert()

      Do While _convertCtrl.State <> ConvertState.Stopped
         Application.DoEvents()
      Loop

      _convertCtrl.ResetSource()

      _dvdWriter.TitleMenu = False
      _dvdWriter.Overwrite = False

      _convertCtrl.ResetTarget()
      _convertCtrl.ResetSource()

      ' done, free COM object
      Marshal.ReleaseComObject(_dvdWriter)
      _dvdWriter = Nothing

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

Private Sub ChangeStillImageDuration(ByVal duration As Double)
   Dim pStlImgRd As ILTStlImgRd

   Try
      pStlImgRd = TryCast(_convertCtrl.GetSubObject(ConvertObject.SourceFilter), ILTStlImgRd)
      If Not pStlImgRd Is Nothing Then
         ' get the current menu duration
         Dim currentDuration As Double
         currentDuration = _convertCtrl.Duration

         If currentDuration * 2 <= duration Then
            pStlImgRd.Loop = CInt(duration / currentDuration + 0.5)
         End If
      End If
   Catch
   End Try
End Sub

public bool _result = false;
      public ConvertCtrlForm _form = new ConvertCtrlForm();
      private ConvertCtrl _convertCtrl = null;
      private LTDvdWriter _dvdWriter = null;

      public void DvdWriterExample()
      {
         // reference the convert control
         _convertCtrl = _form.ConvertCtrl;

         // source files for DVD content
         string inFile1 = Path.Combine(LEAD_VARS.MediaDir,"DVDWriter_Source1.avi");
         string inFile2 = Path.Combine(LEAD_VARS.MediaDir,"DVDWriter_Source2.avi");
         string inFile3 = Path.Combine(LEAD_VARS.MediaDir,"DVDWriter_Source3.avi");
         string inFile4 = Path.Combine(LEAD_VARS.MediaDir,"DVDWriter_Source4.avi");
         string backgroundImageFile = Path.Combine(LEAD_VARS.MediaDir,"DVDWriter_Background.jpg");
         string outFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_DvdWriterExample_DVD");

         try
         {
            _dvdWriter = null;

            _convertCtrl.Preview = true;
            _convertCtrl.PreviewVisible = true;

            // setup the converter
            _convertCtrl.TargetFormat = TargetFormatType.DVD;
            _convertCtrl.VideoCompressors.Mpeg2.Selected = true;
            _convertCtrl.AudioCompressors.MpegAudio.Selected = true;

            // Create a DVD image with 2 titles, each contains 2 chapters: 
            // Source video
            _convertCtrl.SourceFile = inFile1;

            // Destination image folder
            _convertCtrl.TargetFile = outFile;

            // Retrieve the DVD Writer interface 
            _dvdWriter = _convertCtrl.GetSubObject(ConvertObject.Sink) as LTDvdWriter;

            _dvdWriter.RemoveAllMenuTitles();
            _dvdWriter.MenulessTitlePlay = false;

            // Set the TitleBreak property to false. 
            // This will prevent the title from being written immediately after the conversion
            _dvdWriter.TitleBreak = false;

            _dvdWriter.AddMenuTitle("Title 1", -1);

            // Write the first chapter in the first title
            _convertCtrl.StartConvert();

            while (_convertCtrl.State != ConvertState.Stopped)
               Application.DoEvents();

            _convertCtrl.ResetSource();

            int highPart = 0;
            int lowPart = _dvdWriter.GetBytesWritten(out highPart);
            Int64 written = highPart << 32 | lowPart;

            _convertCtrl.SourceFile = inFile2;
            _convertCtrl.StartConvert();

            while (_convertCtrl.State != ConvertState.Stopped)
               Application.DoEvents();

            _convertCtrl.ResetSource();

            // Prepare for the second title
            // Set the TitleBreak property to TRUE, so the the current title can be flushed
            _dvdWriter.TitleBreak = true;

            // Disable Overwrite so the title will be appended to an existing dvd image
            _dvdWriter.Overwrite = false;
            _dvdWriter.MenulessTitlePlay = false;

            // Set the TitleBreak property to FALSE. 
            // This will prevent the title from being written immediately after the conversion
            _dvdWriter.TitleBreak = false;
            _dvdWriter.AddMenuTitle("Title 2", -1);

            // Write the first chapter in the second title
            _convertCtrl.SourceFile = inFile3;
            _convertCtrl.StartConvert();

            while (_convertCtrl.State != ConvertState.Stopped)
               Application.DoEvents();

            _convertCtrl.ResetSource();

            // Write the second chapter in the second title
            _convertCtrl.SourceFile = inFile4;
            _convertCtrl.StartConvert();

            while (_convertCtrl.State != ConvertState.Stopped)
               Application.DoEvents();

            _convertCtrl.ResetSource();

            // Close the second title
            _dvdWriter.TitleBreak = true;

            _dvdWriter.TitleMenu = true;
            _dvdWriter.MenuLoop = true;
            _dvdWriter.MenulessTitlePlay = false;

            // Write the second chapter in the second title
            _convertCtrl.SourceFile = backgroundImageFile;
            ChangeStillImageDuration(1.0);

            _convertCtrl.StartConvert();

            while (_convertCtrl.State != ConvertState.Stopped)
               Application.DoEvents();

            _convertCtrl.ResetSource();

            _dvdWriter.TitleMenu = false;
            _dvdWriter.Overwrite = false;

            _convertCtrl.ResetTarget();
            _convertCtrl.ResetSource();

            // done, free COM object
            Marshal.ReleaseComObject(_dvdWriter);
            _dvdWriter = null;

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

      private void ChangeStillImageDuration(double duration)
      {
         ILTStlImgRd pStlImgRd;

         try
         {
            pStlImgRd = _convertCtrl.GetSubObject(ConvertObject.SourceFilter) as ILTStlImgRd;
            if (pStlImgRd != null)
            {
               // get the current menu duration
               double currentDuration;
               currentDuration = _convertCtrl.Duration;

               if (currentDuration * 2 <= duration)
                  pStlImgRd.Loop = (int)(duration / currentDuration + 0.5);
            }
         }
         catch
         {
         }
      }

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

Requirements

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

ILTDvdWriter Interface
ILTDvdWriter Members