ByteScout Screen Capturing SDK – VB.NET – Capture From Entire Screen into WEBM Video

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ByteScout Screen Capturing SDK – VB.NET – Capture From Entire Screen into WEBM Video

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ByteScout-Screen-Capturing-SDK-VB-NET-Capture-From-Entire-Screen-into-WEBM-Video.pdf

How to capture from entire screen into WEBM video in VB.NET using ByteScout Screen Capturing SDK

How to code in VB.NET to capture from entire screen into WEBM video with this step-by-step tutorial

These source code samples are listed and grouped by their programming language and functions they use. ByteScout Screen Capturing SDK can capture from entire screen into WEBM video. It can be used from VB.NET. ByteScout Screen Capturing SDK is the tool for developers who want to add screen capturing in their application. Can record screen into video and into single screenshots. Output formats are WMV, AVI, WebM for video and PNG for screenshots. You can adjust output video size, quality, resolution, framerate, video and audio codecs. Includes special privacy features for blacking out sensitive information on screen. Can also capture video from web camera, can add overlays with text or images.

You will save a lot of time on writing and testing code as you may just take the VB.NET code from ByteScout Screen Capturing SDK for capture from entire screen into WEBM video below and use it in your application. This VB.NET sample code is all you need for your app. Just copy and paste the code, add references (if needs to) and you are all set! Further enhancement of the code will make it more vigorous.

Free trial version of ByteScout Screen Capturing SDK is available for download from our website. Get it to try other source code samples for VB.NET.

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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 = "EntireScreenCaptured.webm" ' set output video filename to .WMV, .WEBM 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


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


        ' 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);


	'// 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 25 seconds...")

        ' wait for 25 seconds
        Thread.Sleep(25000)

        ' stop capturing and flush 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("EntireScreenCaptured.webm")

    End Sub

End Module