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.

  1. Start Visual Studio.

  2. Choose File->New->Project... from the menu.

  3. 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.

  4. 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.

  5. 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\Dotnet\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.

  6. 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\Dotnet\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
  7. 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
  8. 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
  9. 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; 

  10. Declare the following private variable:

    VB
    Private _sourceFile As String 
    Private _targetFile As String 
    C#
    private string _sourceFile; 
    private string _targetFile; 

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

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

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

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

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

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

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

    VB
    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    
    C#
    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); 
       } 
    } 

  15. Build, and Run the program to test it.

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