StreamSubtype Property

Visual Basic
C#
C++/CLI

'Declaration
 
Public ReadOnly Property StreamSubtype As String

'Usage
 
Dim instance As MediaInfo
Dim value As String
 
value = instance.StreamSubtype

public string StreamSubtype {get;}

public:
property String^ StreamSubtype {
   String^ get();
}

Property Value

A value representing the GUID of the current stream subtype.

This property is updated automatically when the CurrentStream property is set. To change the current stream, set the CurrentStream property to the new value. Once the current stream has been set, other MediaInfo properties are updated with information about the current stream.

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

Copy Code

Imports Leadtools
Imports Leadtools.Multimedia
Imports LeadtoolsMultimediaExamples.Fixtures

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 _
                          & "Source BitRate={2}" & Microsoft.VisualBasic.Constants.vbLf _
                          & "Duration={3}" & Microsoft.VisualBasic.Constants.vbLf _
                          & "VideoBitRate={4}" _
                          & Microsoft.VisualBasic.Constants.vbLf _
                          & "VideoBitCount={5}" _
                          & Microsoft.VisualBasic.Constants.vbLf + Microsoft.VisualBasic.Constants.vbLf _
                          & "Are these values correct?", _
                          mi.SourceFile, _
                          mi.SourceFileSize, _
                          mi.SourceBitRate, _
                          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 18\Media"
End Class

using Leadtools;
using Leadtools.Multimedia;
using LeadtoolsMultimediaExamples.Fixtures;

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}\nSource BitRate={2}\nDuration={3}\nVideoBitRate={4}\nVideoBitCount={5}\n\nAre these values correct?",
          // AudioBitsPerSample={5}\nAudioChannels={6}\n 
         mi.SourceFile, mi.SourceFileSize, mi.SourceBitRate, 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 18\Media";
}

Target Platforms

Reference

MediaInfo Class
MediaInfo Members
StreamMediaType Property
StreamSubtype Property
StreamSubtypeName Property
StreamType Property
StreamTypeName Property
StreamDuration Property