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AllowedStreams Property

Summary

Gets or sets which streams can be converted.

Syntax

C#
VB
C++
public virtual StreamFormatType AllowedStreams { get; set; } 
Public Overridable Property AllowedStreams As Leadtools.Mediafoundation.StreamFormatType 

Property Value

A combination of StreamFormatType enumeration values.

Remarks

For a list of possible values, refer to the StreamFormatType enumerations. Individual values can be logically OR-ed to create a combination.

Example

C#
VB
using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
public bool _result = false; 
public ConvertCtrlForm _form = new ConvertCtrlForm(); 
 
public void TargetFormatsExample() 
{ 
   // reference the convert control 
   ConvertCtrl 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_TargetFormatsExample.wmv"); 
 
   try 
   { 
      // set the video convert input file name 
      convertctrl.SourceFile = inFile; 
 
      // select video and audio target formats for the output 
      int index = -1; 
      TargetVideoFormats targetvideoformats = convertctrl.TargetFormats[convertctrl.TargetFormat].VideoFormats; 
      index = targetvideoformats.IndexOf("{33564D57-0000-0010-8000-00AA00389B71}");// Windows Media Video 9 (WMV) 
      targetvideoformats.Selection = index; 
      TargetAudioFormats targetaudioformats = convertctrl.TargetFormats[convertctrl.TargetFormat].AudioFormats; 
      index = targetaudioformats.IndexOf("{00000161-0000-0010-8000-00AA00389B71}");// Windows Media Audio (WMA) 
      targetaudioformats.Selection = index; 
 
      // select the WMV target format 
      TargetFormat tf = convertctrl.TargetFormats[TargetFormatType.WMV]; 
      tf.Selected = true; 
 
      // set the allow capture streams  
      convertctrl.AllowedStreams = tf.Streams; 
 
      // check it directly 
      TargetFormatType tft = convertctrl.TargetFormat; 
 
      // set the result to what we expect 
      _result = (tft == TargetFormatType.WMV); 
 
      // set the target file 
      convertctrl.TargetFile = outFile; 
 
      // 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(); 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media"; 
} 
Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As ConvertCtrlForm = New ConvertCtrlForm() 
 
Public Sub TargetFormatsExample() 
   ' reference the convert control 
   Dim convertctrl As 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_TargetFormatsExample.wmv") 
 
   Try 
      ' set the video capture device, use your capture device name here 
      convertctrl.SourceFile = inFile 
 
      ' select MP4 target format 
      Dim tf As TargetFormat = convertctrl.TargetFormats(TargetFormatType.MP4) 
      tf.Selected = True 
 
      ' select H264 video target 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 target format 
      Dim trgaudioformats As TargetAudioFormats = convertctrl.TargetFormats(convertctrl.TargetFormat).AudioFormats 
      index = trgaudioformats.IndexOf("{00001610-0000-0010-8000-00AA00389B71}") ' AAC 
      trgaudioformats.Selection = index 
 
 
      ' set the allow capture streams  
      convertctrl.AllowedStreams = tf.Streams 
 
      ' check it directly 
      Dim tft As TargetFormatType = convertctrl.TargetFormat 
 
      ' set the result to what we expect 
      _result = (tft = TargetFormatType.MP4) 
 
      ' set the target file 
      convertctrl.TargetFile = outFile 
 
      ' 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 
 
Public NotInheritable Class LEAD_VARS 
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media" 
End Class 

Requirements

Target Platforms

Help Version 19.0.2017.10.19
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Leadtools.MediaFoundation Assembly