VideoCompressors Property (CaptureCtrl)

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

public virtual VideoCompressors VideoCompressors {get;}

'Declaration
 
Public Overridable ReadOnly Property VideoCompressors As VideoCompressors

'Usage
 
Dim instance As CaptureCtrl
Dim value As VideoCompressors
 
value = instance.VideoCompressors

public virtual VideoCompressors VideoCompressors {get;}

 get_VideoCompressors();

public:
virtual property VideoCompressors^ VideoCompressors {
   VideoCompressors^ get();
}

Property Value

A VideoCompressors collection object.

The VideoCompressors object is used to enumerate the available video compressors, and to select a video compressor for the capturing process.

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

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Public _result As Boolean = False
      Public _form As CaptureCtrlForm = New CaptureCtrlForm()
      Public Sub CompressorsExample()
         ' reference the capture control
         Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

         ' output file
         Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_CompressorsExample.avi")

         Try
            ' set the source video device, select using your device name here
            If capturectrl.VideoDevices("USB") Is Nothing Then
               Throw New Exception("No USB video device available")
            End If

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

            ' set the source video device, select using your device name here
            If capturectrl.AudioDevices("USB") Is Nothing Then
               Throw New Exception("No USB audio device available")
            End If

            capturectrl.AudioDevices("USB").Selected = True

            ' set the video compressor to H264
            capturectrl.VideoCompressors.H264.Selected = True

            ' set the audio compressor to AC3
            capturectrl.AudioCompressors.AC3.Selected = True

            ' set the target files
            capturectrl.TargetFile = outFile

            ' check if we have can capture video
            If capturectrl.IsModeAvailable(CaptureMode.VideoAndAudio) Then
               capturectrl.FrameDelay = 0.033 ' 30 frames per second
               capturectrl.TimeLimit = 10 ' just 10 seconds of capture time
               capturectrl.UseTimeLimit = True

               ' start the capture process
               capturectrl.StartCapture(CaptureMode.VideoAndAudio)
            End If
         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 capturectrl.State = CaptureState.Running
            Application.DoEvents()
         Loop

         ' set the result to what we expect
         _result = File.Exists(outFile)
      End Sub

Public NotInheritable Class LEAD_VARS
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
End Class

public bool _result = false;
      public CaptureCtrlForm _form = new CaptureCtrlForm();
      public void CompressorsExample()
      {
         // reference the capture control
         CaptureCtrl capturectrl = _form.CaptureCtrl;

         // output file
         string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_CompressorsExample.avi");

         try
         {
            // set the source video device, select using your device name here
            if (capturectrl.VideoDevices["USB"] == null)
               throw new Exception("No USB video device available");

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

            // set the source video device, select using your device name here
            if (capturectrl.AudioDevices["USB"] == null)
               throw new Exception("No USB audio device available");

            capturectrl.AudioDevices["USB"].Selected = true;

            // set the video compressor to H264
            capturectrl.VideoCompressors.H264.Selected = true;

            // set the audio compressor to AC3
            capturectrl.AudioCompressors.AC3.Selected = true;

            // set the target files
            capturectrl.TargetFile = outFile;

            // check whether we can capture video
            if (capturectrl.IsModeAvailable(CaptureMode.VideoAndAudio))
            {
               capturectrl.FrameDelay = .033;  // 30 frames per second
               capturectrl.TimeLimit = 10;     // just 10 seconds of capture time
               capturectrl.UseTimeLimit = true;

               // start the capture process
               capturectrl.StartCapture(CaptureMode.VideoAndAudio);
            }
         }
         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 (capturectrl.State == CaptureState.Running)
            Application.DoEvents();

         // set the result to what we expect
         _result = File.Exists(outFile);
      }

static class LEAD_VARS
{
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
}

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
VideoCompressors Class