public string SubTypeName {get;}
Public ReadOnly Property SubTypeName As String
public:
property String^ SubTypeName {
String^ get();
}
A string that represents the GUID of the source video type.
This property is one of the properties that gets updated by the VideoFormats indexer. This property updated with a string that represents the GUID of the source video type. For a list of video types, refer to the Media Subtypes section of Format Types, Media Types and Media Subtypes. 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 VideoFormat.SubTypeFriendlyName property is updated with the friendly name of the video format type.
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;
}
}
// 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.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
' 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
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document