Creating a Media Foundation Convert Application

Take the following steps to create and run a multimedia convert application using the LEADTOOLS Media Foundation ConvertCtrl control.

Start Visual Studio.
Choose File->New->Project... from the menu.
In the New Project dialog box, choose either "Visual C# Projects" or "VB Projects" in the Projects Type List, and choose "Windows Application " in the Templates List.
Type the project name as "Multimedia Convert" in the Project Name field, and then choose OK. If desired, type a new location for your project or select a directory using the Browse button, and then choose OK.
In the "Solution Explorer" window, right-click on the "References" folder, and select "Add Reference..." from the context menu. In the "Add Reference" dialog box, select the ".NET" tab and select Leadtools.MediaFoundation and click OK. If this DLL does not appear under the .NET tab, you will need select the Browse tab and add it from the "<LEADTOOLS_INSTALLDIR>\Bin\Dotnet4\Win32 " folder, by selecting the following DLL:
- Leadtools.MediaFoundation.dll
After browsing, click the Select button and then press the OK button to add the above DLL to the application.

Make sure Form1 is in design view. Go to the toolbox (View->Toolbox) and drag and drop a ConvertCtrl control on the form. NOTE: If you do not have ConvertCtrl in your toolbox, select Tools->Choose Toolbox Items from the menu. Click Browse and then select Leadtools.MediaFoundation.dll from "<LEADTOOLS_INSTALLDIR>\Bin\Dotnet4\Win32" and then click Open and then click OK. After adding it to the form, set the following properties on the convert control:

Property	Value
Name	_convertctrl
Anchor	Top, Bottom, Left, Right
BackColor	Black

Go to the toolbox (View->Toolbox) and drag and drop a ProgressBar control on the form (below the convert control) and set the following properties:

Property	Value
Name	_progress
Anchor	Bottom, Left, Right
Step	1

Go to the toolbox (View->Toolbox) and drag and drop a Button control to the bottom of the form and set the following properties:

Property	Value
Name	_buttonConvert
Text	Convert
Anchor	Bottom, Right

Switch Form1 to code view (right-click Form1 in the solution explorer then select View Code) and add the following lines at the beginning of the file:
VB
```
Imports Leadtools.MediaFoundation 
```
C#
```
using Leadtools.MediaFoundation; 
```

Declare the following private variable:

Private _sourceFile As String 
Private _targetFile As String

private string _sourceFile; 
private string _targetFile;

Add an event handler to the Form1 Load event and code it as follows:

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 
   _sourceFile = @"<LEADTOOLS_INSTALLDIR>\Media\DaDa_H264.mp4" 
   _targetFile = "DaDa.wmv" 
End Sub

private void Form1_Load(object sender, System.EventArgs e) 
{ 
   _sourceFile = @"<LEADTOOLS_INSTALLDIR>\Media\DaDa_H264.mp4"; 
   _targetFile = "DaDa.wmv"; 
}

Add an event handler to the _convertctrl Progress event and code it as follows:

Private Sub _convertctrl_Progress(ByVal sender As System.Object, ByVal e As ProgressEventArgs) Handles _convertctrl.Progress 
   _progress.Value = CInt((_progress.Maximum * e.percent / 100)) 
End Sub

private void _convertctrl_Progress(object sender, ProgressEventArgs e) 
{ 
   _progress.Value = (int)(_progress.Maximum * e.percent / 100); 
}

Add an event handler to the _convertctrl Complete event and code it as follows:

Private Sub _convertctrl_Complete(ByVal sender As System.Object, ByVal e As EventArgs) Handles _convertctrl.Complete 
   MessageBox.Show("Conversion Complete") 
   _buttonConvert.Enabled = True 
End Sub

private void _convertctrl_Complete(object sender, EventArgs e) 
{ 
   MessageBox.Show("Conversion Complete"); 
   _buttonConvert.Enabled = true; 
}

Add an event handler to the _buttonConvert Click event and code it as follows:

Private Sub _buttonConvert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles _buttonConvert.Click 
   Try 
      _convertctrl.Preview = True 
      _convertctrl.SourceFile = _sourceFile 
      _convertctrl.TargetFormat = TargetFormatType.WMV 
      Dim trgvideoformats As TargetVideoFormats = _convertctrl.TargetFormats(_convertctrl.TargetFormat).VideoFormats 
      trgvideoformats.Selection = trgvideoformats.IndexOf("{33564D57-0000-0010-8000-00AA00389B71}") ' Windows Media Video 9 (WMV) 
      Dim trgaudioformats As TargetAudioFormats = _convertctrl.TargetFormats(_convertctrl.TargetFormat).AudioFormats 
      trgaudioformats.Selection = trgaudioformats.IndexOf("{00000161-0000-0010-8000-00AA00389B71}") ' Windows Media Audio (WMA) 
      _convertctrl.TargetFile = _targetFile 
                       
      _convertctrl.StartConvert() 
      _buttonConvert.Enabled = False 
   Catch ex As Exception 
      MessageBox.Show(ex.Message) 
   End Try 
End Sub

private void _buttonConvert_Click(object sender, System.EventArgs e) 
{ 
   try 
   { 
      _convertctrl.Preview = true; 
      _convertctrl.SourceFile = _sourceFile; 
      _convertctrl.TargetFormat = TargetFormatType.WMV; 
      TargetVideoFormats targetvideoformats = _convertctrl.TargetFormats[_convertctrl.TargetFormat].VideoFormats; 
      targetvideoformats.Selection = targetvideoformats.IndexOf("{33564D57-0000-0010-8000-00AA00389B71}");// Windows Media Video 9 (WMV) 
      TargetAudioFormats targetaudioformats = _convertctrl.TargetFormats[_convertctrl.TargetFormat].AudioFormats; 
      targetaudioformats.Selection  = targetaudioformats.IndexOf("{00000161-0000-0010-8000-00AA00389B71}");// Windows Media Audio (WMA) 
      _convertctrl.TargetFile = _targetFile; 
                       
      _convertctrl.StartConvert(); 
      _buttonConvert.Enabled = false; 
   } 
   catch (Exception ex) 
   { 
      MessageBox.Show(this, ex.Message); 
   } 
}