Gets the VideoCaptureFormats object that contains all the video formats available for the current capture device.
public virtual Leadtools.Multimedia.VideoFormats VideoCaptureFormats {get;}
Public Overridable ReadOnly Property VideoCaptureFormats As Leadtools.Multimedia.VideoFormats
public:
virtual property Leadtools.Multimedia.VideoFormats^ VideoCaptureFormats {
Leadtools.Multimedia.VideoFormats^ get();
}
A VideoFormats object.
The VideoFormats indexer obtains a see cref ="VideoFormat"/> object for each of the supported video formats. The VideoFormat properties of each video format contain information about the specific video format.
using Leadtools;
using Leadtools.Multimedia;
using LeadtoolsMultimediaExamples.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;
}
}
// 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;
}
}
Imports Leadtools
Imports Leadtools.Multimedia
Imports LeadtoolsMultimediaExamples.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
' 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.Multimedia.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
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Help Version 19.0.2017.6.16
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