AudioFormats Property

Visual Basic
C#
C++/CLI

'Declaration
 
Public ReadOnly Property AudioFormats As TargetAudioFormats

'Usage
 
Dim instance As TargetFormat
Dim value As TargetAudioFormats
 
value = instance.AudioFormats

public TargetAudioFormats AudioFormats {get;}

public:
property TargetAudioFormats^ AudioFormats {
   TargetAudioFormats^ get();
}

Property Value

An TargetAudioFormats object representing the target audio format collection.

The TargetAudioFormats object is used to build a list of target audio formats to use in the target format object and determine which audio formats are supported by the target format.

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

Copy Code

Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As ConvertCtrlForm = New ConvertCtrlForm()
Public _convertctrl As ConvertCtrl
Public Sub VideoFormatsExample()
   ' reference the convert control
   _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_VideoFormatsExample.mp4")

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

      ' get MP4 target format
           Dim tf As TargetFormat = _convertctrl.TargetFormats(TargetFormatType.MP4)

      ' reset MP4 target format
      tf.Reset()

      ' select MP4 target format
      tf.Selected = True

      ' select H264 video format
      Dim index As Integer = -1
      Dim trgvideoformats As TargetVideoFormats = _convertctrl.TargetFormats(_convertctrl.TargetFormat).VideoFormats
      index = trgvideoformats.IndexOf("{34363248-0000-0010-8000-00AA00389B71}") ' H264
      trgvideoformats.Selection = index

      ' select AAC audio format
      Dim trgaudioformats As TargetAudioFormats = _convertctrl.TargetFormats(_convertctrl.TargetFormat).AudioFormats
      index = trgaudioformats.IndexOf("{00001610-0000-0010-8000-00AA00389B71}") ' AAC
      trgaudioformats.Selection = index

      ' set audio properties
      tf.AudioAvgBytesPerSecond = 24000
      tf.AudioBitsPerSample = 16
      tf.AudioNumChannels = 2
      tf.AudioSamplesPerSecond = 44100

      ' set video properties
      tf.VideoEncodeQuality = 85
      tf.VideoFrameHeight = 240
      tf.VideoFrameRate = 29.26
      tf.VideoFrameWidth = 320

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

      ' subscribe to the progress event
      AddHandler _convertctrl.Progress, AddressOf ConvertCtrl_Progress

      ' convert it now!
           _convertctrl.StartConvert()

   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

Private Sub ConvertCtrl_Progress(ByVal sender As Object, ByVal e As ProgressEventArgs)
   ' set the result to true if complete
   If e.percent = 100 Then
      _result = True
   End If
End Sub

Public NotInheritable Class LEAD_VARS
Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media"
End Class

using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;

public bool _result = false;
public ConvertCtrlForm _form = new ConvertCtrlForm();
public ConvertCtrl _convertctrl;
public void VideoFormatsExample()
{
   // reference the convert control
   _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_VideoFormatsExample.MP4");

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

      // get the MP4 target format
      TargetFormat tf = _convertctrl.TargetFormats[TargetFormatType.MP4];

      // reset the MP4 target format
      tf.Reset();

      // select the MP4 target format
      tf.Selected = true;

      // select H264 video format
      int index = -1;
      TargetVideoFormats targetvideoformats = tf.VideoFormats;
      index = targetvideoformats.IndexOf("{34363248-0000-0010-8000-00AA00389B71}");// H264
      targetvideoformats.Selection = index;

      // select AAC audio format
      TargetAudioFormats targetaudioformats = tf.AudioFormats;
      index = targetaudioformats.IndexOf("{00001610-0000-0010-8000-00AA00389B71}");// AAC
      targetaudioformats.Selection = index;

      // set audio properties
      tf.AudioAvgBytesPerSecond   = 24000;
      tf.AudioBitsPerSample = 16;
      tf.AudioNumChannels = 2;
      tf.AudioSamplesPerSecond = 44100;

      // set video properties
      tf.VideoEncodeQuality = 85;
      tf.VideoFrameHeight = 240;
      tf.VideoFrameRate = 29.26;
      tf.VideoFrameWidth = 320;

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

      // set our progress event handler
      _convertctrl.Progress += new ProgressEventHandler(ConvertCtrl_Progress);

      // convert it now!
      _convertctrl.StartConvert();
   }
   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();
}

void ConvertCtrl_Progress(object sender, ProgressEventArgs e)
{
   // set the result to true if complete
   if (e.percent == 100)
      _result = true;
}

static class LEAD_VARS
{
public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media";
}

Target Platforms

Reference

TargetFormat Class
TargetFormat Members