VideoCaptureStreamType Property

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public virtual string VideoCaptureStreamType {get;}

'Declaration
 
Public Overridable ReadOnly Property VideoCaptureStreamType As String

'Usage
 
Dim instance As CaptureCtrl
Dim value As String
 
value = instance.VideoCaptureStreamType

public virtual string VideoCaptureStreamType {get;}

 get_VideoCaptureStreamType();

public:
virtual property String^ VideoCaptureStreamType {
   String^ get();
}

Property Value

MEDIATYPE_Stream	The stream is a byte stream with no time stamps(for example, a hardware compressed stream).
MEDIATYPE_Interleaved	The stream type is interleaved (for example, a stream used by Digital Video (DV)).
MEDIATYPE_Video	The stream type is video.

The string referenced contains a formatted Globally Unique Identifier (GUID) of the form {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}.

For more information on media types, refer to MediaType.

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

Copy Code

Public _result As Boolean = False
  Public _form As CaptureCtrlForm = New CaptureCtrlForm()
  Public Sub CaptureSubTypesExample()
     Dim name, friendlyName As String
     Dim selection As Integer

     ' reference the capture control
     Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

     ' select a video device, use your device name here instead of Analog
     If capturectrl.VideoDevices("Analog") Is Nothing Then
        Throw New Exception("No Analog video tuner device available")
     End If

     capturectrl.VideoDevices("Analog").Selected = True

     ' get the audio inputs object
     Dim subTypes As CaptureSubTypes = capturectrl.VideoCaptureSubTypes

     ' save the current subtype selection
     selection = subTypes.Selection

     Try
        ' select an capture subtype by name for MPEG2Video if available
        If Not subTypes(Leadtools.Multimedia.Constants.MEDIASUBTYPE_MPEG2Video) Is Nothing AndAlso capturectrl.VideoCaptureStreamType = Leadtools.Multimedia.Constants.MEDIATYPE_Stream Then
           subTypes(Leadtools.Multimedia.Constants.MEDIASUBTYPE_MPEG2Video).Selected = True
        Else ' else try YUY2
           If Not subTypes(Leadtools.Multimedia.Constants.MEDIASUBTYPE_YUY2) Is Nothing Then
              subTypes(Leadtools.Multimedia.Constants.MEDIASUBTYPE_YUY2).Selected = True
     End If
     End If

     For Each cst As CaptureSubType In subTypes
       ' get the subtype properties
       name = cst.Name
       friendlyName = cst.FriendlyName

       ' if we found the video tuner input
       If friendlyName = "YUY2" Then
         ' select it and break
         cst.Selected = True
         Exit For
       End If
     Next cst

     ' set the result to what we expect
     _result = (selection = subTypes.Selection)

  Catch e1 As Exception
     _result = False
  End Try
End Sub

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void CaptureSubTypesExample()
{
   string name, friendlyName;
   int selection;

   // reference the capture control
   CaptureCtrl capturectrl = _form.CaptureCtrl;

   // select a video device, use your device's name here instead of Analog
   if (capturectrl.VideoDevices["Analog"] == null)
      throw new Exception("No Analog video tuner device available");

   capturectrl.VideoDevices["Analog"].Selected = true;

   // get the audio inputs object
   CaptureSubTypes subTypes = capturectrl.VideoCaptureSubTypes;

   // save the current subtype selection
   selection = subTypes.Selection;

   try
   {
      // select an capture subtype by name for MPEG2Video if available
      if (subTypes[Constants.MEDIASUBTYPE_MPEG2Video] != null
         && capturectrl.VideoCaptureStreamType == Constants.MEDIATYPE_Stream)
      {
         subTypes[Constants.MEDIASUBTYPE_MPEG2Video].Selected = true;
      }
      else // else try YUY2
      if (subTypes[Constants.MEDIASUBTYPE_YUY2] != null)
      {
         subTypes[Constants.MEDIASUBTYPE_YUY2].Selected = true;
      }

      foreach (CaptureSubType cst in subTypes)
      {
         // get the subtype properties
         name = cst.Name;
         friendlyName = cst.FriendlyName;

         // if we found the video tuner input
         if (friendlyName == "YUY2")
         {
            // select it and break
            cst.Selected = true;
            break;
         }
      }

      // set the result to what we expect
      _result = (selection == subTypes.Selection);

   }
   catch (Exception)
   {
      _result = false;
   }
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

CaptureCtrl Class
CaptureCtrl Members