Gets the estimated capture output bit rate, in bits per second.
public virtual int EstimateOutputBitRate()
Public Overridable Function EstimateOutputBitRate() As Integer
public:
virtual int EstimateOutputBitRate();
estimated capture output bit rate, in bits per second.
The retrieved bit rate depends on the state of the capture object. If the object is in the running state, the retrieved bit rate is related to the actual number of bytes written. If the object is not running, the retrieved bit rate is a theoretical value that depends on the capture and selected encoder settings.
using Leadtools;
using Leadtools.Multimedia;
using LeadtoolsMultimediaExamples.Fixtures;
public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public CaptureCtrl _capturectrl;
public void EstimateExample()
{
// reference the capture control
_capturectrl = _form.CaptureCtrl;
// output file
string outFile = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_EstimateOutputBitRateExample.avi");
// 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
{
// set a video compressor
_capturectrl.VideoCompressors.H264.Selected = true;
// set the capture target file
_capturectrl.TargetFile = outFile;
// set the capture mode to still and start
_capturectrl.ReadyCapture(CaptureMode.Video | CaptureMode.InhibitRun);
// get the bit rate estimate
int bitRate = _capturectrl.EstimateOutputBitRate();
// get file size estimate for 60 secs
double fileSize = _capturectrl.EstimateOutputSize(60.0);
// set the result to what we expect
_result = (bitRate != 0 && fileSize != 0.0);
}
catch (Exception)
{
_result = false;
}
}
static class LEAD_VARS
{
public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media";
}
Imports Leadtools
Imports Leadtools.Multimedia
Imports LeadtoolsMultimediaExamples.Fixtures
Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public _capturectrl As CaptureCtrl
Public Sub EstimateExample()
' reference the capture control
_capturectrl = _form.CaptureCtrl
' output file
Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_EstimateOutputBitRateExample.avi")
' set the video capture device, use your capture device name here
If _capturectrl.VideoDevices("USB") Is Nothing Then
Throw New Exception("No USB video device available")
End If
_capturectrl.VideoDevices("USB").Selected = True
Try
' set a video compressor
_capturectrl.VideoCompressors.H264.Selected = True
' set the capture target file
_capturectrl.TargetFile = outFile
' set the capture mode to still and start
_capturectrl.ReadyCapture(CaptureMode.Video Or CaptureMode.InhibitRun)
' get the bit rate estimate
Dim bitRate As Integer = _capturectrl.EstimateOutputBitRate()
' get file size estimate for 60 seconds
Dim fileSize As Double = _capturectrl.EstimateOutputSize(60.0)
' set the result to what we expect
_result = (bitRate <> 0 AndAlso fileSize <> 0.0)
Catch e1 As Exception
_result = False
End Try
End Sub
Public NotInheritable Class LEAD_VARS
Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media"
End Class
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