In This Topic ▼

TVFormat Property

Summary

Gets the analog video TV standard format in use.

Syntax

C++

public AnalogVideoStandard TVFormat { get; }

Public ReadOnly Property TVFormat As AnalogVideoStandard

public: 
property AnalogVideoStandard TVFormat { 
   AnalogVideoStandard get(); 
}

Property Value

A AnalogVideoStandard enumeration value indicating the current standard format in use.

Remarks

Gets the analog video TV standard format in use.

Example

using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void AvailableTVFormatsExample() 
{ 
   // reference the forms capture control and tv tuner 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
   try 
   { 
      // select the first device with analog in it's name 
      // Replace "Analog" with your video capture device name 
      if (capturectrl.VideoDevices["Analog"] == null) 
         throw new Exception("No Analog video devices available!"); 
 
      capturectrl.VideoDevices["Analog"].Selected = true; 
 
      // get the TV Tuner device 
      TVTuner tvtuner = capturectrl.TVTuner; 
 
      // Check if TV tuner is valid 
      if (tvtuner != null) 
      { 
         // get the available TV formats 
         AnalogVideoStandard formats = tvtuner.AvailableTVFormats; 
 
         // check the returned formats for NTSC_M and set the result to what we expect 
         if ((formats & AnalogVideoStandard.NTSC_M) == AnalogVideoStandard.NTSC_M) 
         { 
            // set the result 
            if (tvtuner.TVFormat == AnalogVideoStandard.NTSC_M) 
               _result = true; 
         } 
      } 
   } 
   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(); 
}

Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As CaptureCtrlForm = New CaptureCtrlForm() 
 
Public Sub AvailableTVFormatsExample() 
   ' reference the forms capture control and tv tuner 
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
 
   Try 
      ' select the first device with analog in it's name 
      ' Replace "Analog" with your video capture device name 
      If capturectrl.VideoDevices("Analog") Is Nothing Then 
         Throw New Exception("No Analog video devices available!") 
      End If 
 
      capturectrl.VideoDevices("Analog").Selected = True 
 
      ' get the TV Tuner device 
      Dim tvtuner As TVTuner = capturectrl.TVTuner 
 
      ' Check if TV tuner is valid 
      If Not tvtuner Is Nothing Then 
         ' get the available TV formats 
         Dim formats As AnalogVideoStandard = tvtuner.AvailableTVFormats 
 
         ' check the returned formats for NTSC_M and set the result to what we expect 
         If (formats And AnalogVideoStandard.NTSC_M) = AnalogVideoStandard.NTSC_M Then 
            ' set the result 
            If tvtuner.TVFormat = AnalogVideoStandard.NTSC_M Then 
               _result = True 
            End If 
         End If 
      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 
End Sub

Requirements

Target Platforms

Reference

TVTuner Class

TVTuner Members

Download our FREE evaluation

Help Version 20.0.2020.4.2

Leadtools.MediaFoundation Assembly

Introduction

Getting Started

Namespaces

Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

Assemblies