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UsingDVDecoder Property

Summary

Gets a value that indicates whether the state of the DV Decoder is in use.

Syntax

C++/CLI

public virtual bool UsingDVDecoder { get; }

public: 
virtual property bool UsingDVDecoder { 
   bool get(); 
}

Property Value

true if the DV decoder is being used; false, otherwise.

Remarks

If the DV decoder is used, you can change the size of the preview using the DVDecoderResolution property.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void UsingDVDecoderExample() 
{ 
   // reference the capture control 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
   // output file 
   string outFile = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_UsingDVDecoderExample.avi"); 
 
   try 
   { 
      // set the video capture device, use your capture device name here 
      if (capturectrl.VideoDevices["USB"] == null) 
         throw new Exception("No USB video device available"); 
 
      capturectrl.VideoDevices["USB"].Selected = true; 
 
      // try to find a USB audio device 
      if (capturectrl.AudioDevices["USB"] == null) 
         throw new Exception("No USB audio device available"); 
 
      capturectrl.AudioDevices["USB"].Selected = true; 
 
      // set the video and audio compressors 
      capturectrl.VideoCompressors.DVVideo.Selected = true; 
      capturectrl.AudioCompressors.AC3.Selected = true; 
 
      // set the target output file and format 
      capturectrl.TargetFile = outFile; 
 
      // set the target output format 
      capturectrl.TargetFormat = TargetFormatType.DVSDAVI; 
 
      // check to see whether we have a video compressor dialog and show it 
      if (capturectrl.HasDialog(CaptureDlg.VideoCompressor)) 
         capturectrl.ShowDialog(CaptureDlg.VideoCompressor, _form); 
 
      // check whether we can capture video and audio 
      if (capturectrl.IsModeAvailable(CaptureMode.VideoAndAudio)) 
      { 
         // ready the capture graph 
         capturectrl.ReadyCapture(CaptureMode.VideoAndAudio | CaptureMode.InhibitRun); 
 
         // check to see whether we are using the DVDecoder 
         if (capturectrl.UsingDVDecoder) 
         { 
            // set the DV resolution to full 
            capturectrl.DVDecoderResolution = DVResolution.Full; 
            // set the result 
            _result = true; 
         } 
 
         capturectrl.FrameRate = 5;       // 5 frames per second  
         capturectrl.UseFrameRate = true; 
         capturectrl.TimeLimit = 10;      // just 10 seconds of capture time 
         capturectrl.UseTimeLimit = true; 
 
         // start the capture process 
         capturectrl.StartCapture(CaptureMode.VideoAndAudio); 
      } 
 
      // 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(); 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\LEADTOOLS22\Media"; 
}

Requirements

Target Platforms

Reference

CaptureCtrl Class

CaptureCtrl Members

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Help Version 22.0.2022.12.7

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies