ByteScout Screen Capturing SDK – VB.NET – Pause And Resume Screen Video Recording

Home
/
Articles
/
ByteScout Screen Capturing SDK – VB.NET – Pause And Resume Screen Video Recording

printable version:
ByteScout-Screen-Capturing-SDK-VB-NET-Pause-And-Resume-Screen-Video-Recording.pdf

pause and resume screen video recording in VB.NET with ByteScout Screen Capturing SDK

pause and resume screen video recording in VB.NET

ByteScout tutorials explain the material for programmers who use VB.NET. Pause and resume screen video recording in VB.NET can be implemented with ByteScout Screen Capturing SDK. 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.

VB.NET, code samples for VB.NET, developers help to speed up the application development and writing a code when using ByteScout Screen Capturing SDK. Follow the instruction from the scratch to work and copy and paste code for VB.NET into your editor. You can use these VB.NET sample examples in one or many applications.

Trial version can be downloaded from our website. Source code samples for VB.NET and documentation are included.

On-demand (REST Web API) version:
Web API (on-demand version)

On-premise offline SDK for Windows:
60 Day Free Trial (on-premise)

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.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


  	' 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 10 seconds...")

        Thread.Sleep(10000) ' wait for 10 seconds while recording

        capturer.Pause() ' pause recording

        Console.WriteLine("Recording paused. Press any key to resume and record 2nd part...")
        Console.ReadKey()

        Console.WriteLine("Resuming the recording for another 5 seconds...")

        Thread.Sleep(5000) ' wait for 5 seconds while recording

        capturer.Stop() ' finally stop the recording

        Console.WriteLine("Done! Press any key to exit")
        Console.ReadKey()


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


        Console.WriteLine("Done.")

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

    End Sub

End Module