Width Property (VideoFormat)

Visual Basic
C#
C++/CLI

'Declaration
 
Public ReadOnly Property Width As Integer

'Usage
 
Dim instance As VideoFormat
Dim value As Integer
 
value = instance.Width

public int Width {get;}

public:
property int Width {
   int get();
}

Property Value

A value that represents the video width, in pixels

This property is updated with the video width, in pixels. The CaptureCtrl.VideoCaptureFormats property is updated with a VideoFormats object that contains all of the video formats available for the current capture device. The VideoFormats indexer obtains a VideoFormat object for each of the supported video formats. The VideoFormat properties of each VideoFormat object, obtained using the VideoFormats indexer, are updated with information about that specific video format. This information includes the following information:

The height and width of the video format are contained in the Height property and the Width property, respectively. The Compression property is updated with the video compression information for the video format.

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

Copy Code

Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

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

   Dim count As Integer, compression As Integer = 0, bits As Integer = 0, width As Integer = 0, height As Integer = 0
   Dim found As Integer, selected As Integer = -1

   ' set a video device, use the name of your device here
   If Not capturectrl.VideoDevices("USB") Is Nothing Then
      capturectrl.VideoDevices("USB").Selected = True
   End If

   ' reference the videoformats property
   Dim videoformats As VideoFormats = capturectrl.VideoCaptureFormats

   Try
      ' get count of available video formats
      count = videoformats.Count

      ' enumerate formats and select one
      For Each vf As VideoFormat In videoformats
         ' get the properties
         bits = vf.BitCount
         compression = vf.Compression
         width = vf.Width
         height = vf.Height

         ' select the format if it matches some criteria
         If bits = 16 AndAlso width = 640 AndAlso height = 480 Then
            vf.Selected = True
            Exit For
         End If
      Next vf

      ' reset the current item
      videoformats.Reset()

      ' get the currently selected format
      selected = videoformats.Selection

      ' find a format based on subtype name, width and height (YUY2 320 x 240 video)
      found = videoformats.IndexOf(Leadtools.MediaFoundation.Constants.MEDIASUBTYPE_YUY2, 320, 240)

      ' our found format is not selected, so select it
      If found <> selected Then
         videoformats.Selection = found
      End If

      ' get the new selected format
      selected = videoformats.Selection

      ' set our result based on what we expect
      _result = (count > 0 AndAlso selected = found)
   Catch e1 As Exception
      _result = False
   End Try
End Sub

using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;

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

   int count, compression = 0, bits = 0, width = 0, height = 0;
   int found, selected = -1;

   // set a video device, use the name of your device here
   if (capturectrl.VideoDevices["USB"] != null)
      capturectrl.VideoDevices["USB"].Selected = true;

   // reference the videoformats property
   VideoFormats videoformats = capturectrl.VideoCaptureFormats;

   try
   {
      // get count of available video formats
      count = videoformats.Count;

      // enumerate formats and select one
      foreach (VideoFormat vf in videoformats)
      {
         // get the properties
         bits = vf.BitCount;
         compression = vf.Compression;
         width = vf.Width;
         height = vf.Height;

         // select the format if it matches some criteria
         if (bits == 16 && width == 640 && height == 480)
         {
            vf.Selected = true;
            break;
         }
      }

      // reset the current item
      videoformats.Reset();

      // get the currently selected format
      selected = videoformats.Selection;

      // find a format based on subtype name, width and height (YUY2 320 x 240 video)
      found = videoformats.IndexOf(Constants.MEDIASUBTYPE_YUY2, 320, 240);

      // our found format is not selected, so select it
      if (found != selected)
         videoformats.Selection = found;

      // get the new selected format
      selected = videoformats.Selection;

      // set our result based on what we expect
      _result = (count > 0 && selected == found);
   }
   catch (Exception)
   {
      _result = false;
   }
}

Target Platforms

Reference

VideoFormat Class
VideoFormat Members