ByteScout Screen Capturing SDK – VB.NET – Low FPS To Get Min File Size

  • Home
  • /
  • Articles
  • /
  • ByteScout Screen Capturing SDK – VB.NET – Low FPS To Get Min File Size

ByteScout Screen Capturing SDK – VB.NET – Low FPS To Get Min File Size

Module1.vb

Imports System.Threading
Imports System.Diagnostics

Imports BytescoutScreenCapturingLib ' import bytescout screen capturer activex object


' NOTE: if you are getting error like "invalid image" related to loading the SDK's dll then 
' try to do the following:
' 1) remove the reference to the SDK by View - Solution Explorer
' then click on References, select Bytescout... reference name and right-click it and select Remove
' 2) To re-add click on the menu: Project - Add Reference
' 3) In "Add Reference" dialog switch to "COM" tab and find Bytescout...
' 4) Select it and click "Add" 
' 5) Recompile the application 
' Note: if you need to run on both x64 and x86 then please make sure you have set "Embed Interop Types" to True for this reference


Module Module1

    Sub Main()
	' create capturer class
        Dim capturer As New Capturer()
	' set capturing area to the region type (to capture from given region on the screen)
        capturer.CapturingType = CaptureAreaType.catScreen
	' output video filename
        capturer.OutputFileName = "LowFPS.wmv" ' set output video filename to .WMV or .AVI file


        ' set width and height of output video
        capturer.OutputWidth = 640
        capturer.OutputHeight = 480

	' // WMV and WEBM output use WMVVideoBitrate property to control output video bitrate
   	' // so try to increase it by x2 or x3 times if you think the output video are you are getting is laggy
	' capturer.WMVVideoBitrate = capturer.WMVVideoBitrate * 2


	' set WMV video codec to Windows Media Video 9 Screen that gives best quality/size ratio when recording from screen
	capturer.CurrentWMVVideoCodecName = "Windows Media Video 9 Screen"
	' disable audio so we will have a video only (and the lowest wmv file size as possible: about 20 kb per 1 second, about 70 mb per 1 hour
	capturer.AudioEnabled = False 
	' set FPS to 0.5 fps (1 frame per every 2 seconds)
	' you may also want to set to 1 fps (1 frame per 1 second or higher)
	capturer.FPS = 0.50

        ' set the text overlay with autochanging time stamp macros to indicate playing time and current date time 
        capturer.OverlayingRedTextCaption = "Recording: {RUNNINGMIN}:{RUNNINGSEC}:{RUNNINGMSEC} on {CURRENTYEAR}-{CURRENTMONTH}-{CURRENTDAY} at {CURRENTHOUR}:{CURRENTMIN}:{CURRENTSEC}:{CURRENTMSEC}"

	' uncomment to enable recording of semitransparent or layered windows (Warning: may cause mouse cursor flickering)
	' capturer.CaptureTransparentControls = true


  	' uncomment to set Bytescout Lossless Video format output video compression method
	' do not forget to set file to .avi format if you use Video Codec Name
        ' capturer.CurrentVideoCodecName = "Bytescout Lossless"            
        
        ' start capturing. 
        capturer.Run()

	' IMPORTANT: if you want to check for some code if need to stop the recording then make sure you are 
	' using Thread.Sleep(1) inside the checking loop, so you have the loop like
	' Do 
	' Thread.Sleep(1) 
	' While StopButtonNotClicked



        Console.WriteLine("Capturing entire screen for 5 seconds...")

        ' wait for 5 seconds
        Thread.Sleep(5000)

        ' stop capturing and flush AVI video file into the disk
        capturer.Stop()

        ' Release(Resources)
        System.Runtime.InteropServices.Marshal.ReleaseComObject(capturer)
        capturer = Nothing


        Console.WriteLine("Done.")

        ' open the output video 
        Process.Start("LowFPS.wmv")

    End Sub

End Module


  Click here to get your Free Trial version of the SDK

prev
next