Record Video of Screen Using .Net Technologies

Record a video of the screen using .NET technologies

There isn’t any need for a third-party DLL. This simple method captures the current screen image into a .NET Bitmap object.

    private Image CaptureScreen()
    {
        Rectangle screenSize = Screen.PrimaryScreen.Bounds;
        Bitmap target = new Bitmap(screenSize.Width, screenSize.Height);
        using(Graphics g = Graphics.FromImage(target))
        {
            g.CopyFromScreen(0, 0, 0, 0, new Size(screenSize.Width, screenSize.Height));
        }
        return target;
    }

I am sure you can figure out how to capture a smaller portion of the screen, if that is needed :-).

How to capture screen to be video using C# .Net?

the answer is the Microsoft Expression Encoder. It is according to my opinion the easiest way to record something on vista and windows 7

private void CaptureMoni()
        {

            try
            {
                Rectangle _screenRectangle = Screen.PrimaryScreen.Bounds;
                _screenCaptureJob = new ScreenCaptureJob();
                _screenCaptureJob.CaptureRectangle = _screenRectangle;
                _screenCaptureJob.ShowFlashingBoundary = true;
                _screenCaptureJob.ScreenCaptureVideoProfile.FrameRate = 20;
                _screenCaptureJob.CaptureMouseCursor = true;

                _screenCaptureJob.OutputScreenCaptureFileName = string.Format(@"C:\test.wmv");
                if (File.Exists(_screenCaptureJob.OutputScreenCaptureFileName))
                {
                    File.Delete(_screenCaptureJob.OutputScreenCaptureFileName);
                }
                _screenCaptureJob.Start();
            }
            catch(Exception e) { }
        }

How can I capture the screen to be video using C# .NET?

Your best option seems to be Windows Media Encoder.

Here are some resources:

• Capture Desktop Activities As a Movie

• Capture Activities on Screen in a Movie

• Capture screen activities/video using WmEncoder

Capture Screen Video C# .NET in a Background Process in Windows XP

Create a Video Stream (AVI) from a Series of Images

I think this might be your best solution. Store all the .jpg's and create an avi from the command line at intervals. I don't see how creating video on the fly would produce a "lightweight" solution.

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