LEADTOOLS Multimedia (Leadtools.Multimedia assembly) Send comments on this topic. | Back to Introduction | Help Version 17.0.3.22
AudioFormatTag Property
See Also 
Leadtools.Multimedia Namespace > MediaInfo Class : AudioFormatTag Property



Gets the audio format type for the current stream in the current source media file.

Syntax

Visual Basic (Declaration) 
Public ReadOnly Property AudioFormatTag As Integer
Visual Basic (Usage)Copy Code
Dim instance As MediaInfo
Dim value As Integer
 
value = instance.AudioFormatTag
C# 
public int AudioFormatTag {get;}
C++/CLI 
public:
property int AudioFormatTag {
   int get();
}

Property Value

A value (FOURCC Code) representing the audio format type of the current audio stream.

Example

Visual BasicCopy Code
Public _form As PlayCtrlForm = New PlayCtrlForm()
    Public _result As Boolean = False
    Public Sub ResetSourceExample()
      ' reference the play control
      Dim playctrl As PlayCtrl = _form.PlayCtrl

      ' input file
                Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "MediaInfo_Source.avi")
      Dim info As String = String.Empty

      Try
         ' create a new media info object
         Dim mi As MediaInfo = New MediaInfo()

         ' set the input and output files
         mi.SourceFile = inFile

         ' set the info string
            info = String.Format("Source File={0}" & Microsoft.VisualBasic.Constants.vbLf & "Source File Size={1}" & Microsoft.VisualBasic.Constants.vbLf & "Duration={2}" & Microsoft.VisualBasic.Constants.vbLf & "VideoBitRate={3}" & Microsoft.VisualBasic.Constants.vbLf & "VideoBitCount={4}" & Microsoft.VisualBasic.Constants.vbLf + Microsoft.VisualBasic.Constants.vbLf & "Are these values correct?", mi.SourceFile, mi.SourceFileSize, mi.SourceDuration, mi.VideoBitRate, mi.VideoBitCount) ', mi.AudioBitsPerSample, mi.AudioChannels);

         ' verify the values
         _result = (MessageBox.Show(_form, info, "Media Info", MessageBoxButtons.YesNo) = DialogResult.Yes)

         ' reset the source
         mi.ResetSource()

         ' set the result to what we expect
         _result = _result And (mi.SourceFile Is Nothing)
      Catch e1 As Exception
         _result = False
      End Try
    End Sub

Public NotInheritable Class LEAD_VARS
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 17\Media"
End Class
C#Copy Code
public PlayCtrlForm _form = new PlayCtrlForm();
      public bool _result = false;
      public void ResetSourceExample()
      {
         // reference the play control
         PlayCtrl playctrl = _form.PlayCtrl;

         // input file
         string inFile =Path.Combine(LEAD_VARS.MediaDir,"MediaInfo_Source.avi");
         string info = string.Empty;

         try
         {
            // create a new media info object
            MediaInfo mi = new MediaInfo();

            // set the input and output files
            mi.SourceFile = inFile;

            // set the info string
            info = string.Format("Source File={0}\nSource File Size={1}\nDuration={2}\nVideoBitRate={3}\nVideoBitCount={4}\n\nAre these values correct?", // AudioBitsPerSample={5}\nAudioChannels={6}\n 
               mi.SourceFile, mi.SourceFileSize, mi.SourceDuration, mi.VideoBitRate, mi.VideoBitCount); //, mi.AudioBitsPerSample, mi.AudioChannels);

            // verify the values
            _result = (MessageBox.Show(_form, info, "Media Info", MessageBoxButtons.YesNo) == DialogResult.Yes);

            // reset the source
            mi.ResetSource();

            // set the result to what we expect
            _result &= (mi.SourceFile == null);
         }
         catch (Exception)
         {
            _result = false;
         }
      }

static class LEAD_VARS
{
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 17\Media";
}

Remarks

Gets the audio format type for the current stream in the current source media file. This property is updated automatically when the CurrentStream property is set to an audio stream. For a list of FOURCC values, refer to the Microsoft documentation on FOURCC Codes. This property will not be updated if the current stream is not an audio stream. The current source media file, found in the SourceFile property, is the file that the MediaInfo object gets information for. The SourceFile property must be set before retrieving information from any of the other MediaInfo properties.

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7

See Also