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SourceBitRate Property

Summary

Gets the calculated bit rate of the current source media file, in bits per second.

Syntax

C++

public int SourceBitRate { get; }

Public ReadOnly Property SourceBitRate As Integer

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

Property Value

A value representing the calculated bit rate of the current source media file.

Remarks

Gets the calculated bit rate of the current source media file, in bits per second. This property is updated automatically when the SourceFile property is set to the current source media file. The bit rate with which this property is updated is calculated as follows: BitRate = (FileSize * 8) / SourceDuration, where FileSize and SourceDuration are found in the SourceFileSize property and the SourceDuration property, respectively. The current source media file is found in the SourceFile property. This is the file that the MediaInfo object gets information for. The SourceFile property must be set before retrieving information from any of the other MediaInfo properties. Call the ResetSource method to release the source file when it is no longer needed.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public PlayCtrlForm _form = new PlayCtrlForm(); 
public bool _result = false; 
 
public void ResetSourceExample() 
{ 
   // reference the play control 
   PlayCtrl playctrl = _form.PlayCtrl; 
 
   // input file 
   string inFile = Path.Combine(LEAD_VARS.MediaDir, "MediaInfo_Source.avi"); 
   string info = string.Empty; 
 
   try 
   { 
      // create a new media info object 
      MediaInfo mi = new MediaInfo(); 
 
      // set the input and output files 
      mi.SourceFile = inFile; 
 
      // set the info string 
      info = string.Format("Source File={0}\nSource File Size={1}\nSource BitRate={2}\nDuration={3}\nVideoBitRate={4}\nVideoBitCount={5}\n\nAre these values correct?", 
         // AudioBitsPerSample={5}\nAudioChannels={6}\n  
         mi.SourceFile, mi.SourceFileSize, mi.SourceBitRate, mi.SourceDuration, mi.VideoBitRate, mi.VideoBitCount); //, mi.AudioBitsPerSample, mi.AudioChannels); 
 
      // verify the values 
      _result = (MessageBox.Show(_form, info, "Media Info", MessageBoxButtons.YesNo) == DialogResult.Yes); 
 
      // reset the source 
      mi.ResetSource(); 
 
      // set the result to what we expect 
      _result &= (mi.SourceFile == null); 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media"; 
}

Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _form As PlayCtrlForm = New PlayCtrlForm() 
Public _result As Boolean = False 
 
Public Sub ResetSourceExample() 
   ' reference the play control 
   Dim playctrl As PlayCtrl = _form.PlayCtrl 
 
   ' input file 
   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "MediaInfo_Source.avi") 
   Dim info As String = String.Empty 
 
   Try 
      ' create a new media info object 
      Dim mi As MediaInfo = New MediaInfo() 
 
      ' set the input and output files 
      mi.SourceFile = inFile 
 
      ' set the info string 
      info = String.Format("Source File={0}" _ 
                           & Microsoft.VisualBasic.Constants.vbLf _ 
                           & "Source File Size={1}" & Microsoft.VisualBasic.Constants.vbLf _ 
                           & "Source BitRate={2}" & Microsoft.VisualBasic.Constants.vbLf _ 
                           & "Duration={3}" & Microsoft.VisualBasic.Constants.vbLf _ 
                           & "VideoBitRate={4}" _ 
                           & Microsoft.VisualBasic.Constants.vbLf _ 
                           & "VideoBitCount={5}" _ 
                           & Microsoft.VisualBasic.Constants.vbLf + Microsoft.VisualBasic.Constants.vbLf _ 
                           & "Are these values correct?", 
                           mi.SourceFile, 
                           mi.SourceFileSize, 
                           mi.SourceBitRate, 
                           mi.SourceDuration, 
                           mi.VideoBitRate, 
                           mi.VideoBitCount) ', mi.AudioBitsPerSample, mi.AudioChannels); 
 
      ' verify the values 
      _result = (MessageBox.Show(_form, info, "Media Info", MessageBoxButtons.YesNo) = DialogResult.Yes) 
 
      ' reset the source 
      mi.ResetSource() 
 
      ' set the result to what we expect 
      _result = _result And (mi.SourceFile Is Nothing) 
   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 20\Media" 
End Class

Requirements

Target Platforms

Reference

MediaInfo Class

MediaInfo Members

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Help Version 20.0.2020.4.2

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies