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Create screen recording software application in C# | Write program for Screen recording in C#

First you  create console application in and create class file for program  RecorderParams.cs  and write program for take screen shot and make a .avi video stream   

 

For Example:- 

start.......................

using System;

using System.Drawing;

using System.Drawing.Imaging;

using System.Runtime.InteropServices;

using System.Threading;

using System.Threading.Tasks;

using SharpAvi;

using SharpAvi.Codecs;

using SharpAvi.Output;

using System.Windows.Forms;

namespace ScreenRecording

{

    public class RecorderParams

    {

        public RecorderParams(string filename, int FrameRate, FourCC Encoder, int Quality)

        {

            FileName = filename;

            FramesPerSecond = FrameRate;

            Codec = Encoder;

            this.Quality = Quality;

            Height = Screen.PrimaryScreen.Bounds.Height;

            Width = Screen.PrimaryScreen.Bounds.Width;

        }

        string FileName;

        public int FramesPerSecond, Quality;

        FourCC Codec;

        public int Height { get; private set; }

        public int Width { get; private set; }

        public AviWriter CreateAviWriter()

        {

            return new AviWriter(FileName)

            {

                FramesPerSecond = FramesPerSecond,

                EmitIndex1 = true,

            };

        }

        public IAviVideoStream CreateVideoStream(AviWriter writer)

        {

            if (Codec == KnownFourCCs.Codecs.Uncompressed)

                return writer.AddUncompressedVideoStream(Width, Height);

            else if (Codec == KnownFourCCs.Codecs.MotionJpeg)

                return writer.AddMotionJpegVideoStream(Width, Height, Quality);

            else

            {

                return writer.AddMpeg4VideoStream(Width, Height, (double)writer.FramesPerSecond,

                    quality: Quality,

                    codec: Codec,

                     forceSingleThreadedAccess: true);

            }

        }

    }

    public class Recorder : IDisposable

    {

        #region Fields

        AviWriter writer;

        RecorderParams Params;

        IAviVideoStream videoStream;

        Thread screenThread;

        ManualResetEvent stopThread = new ManualResetEvent(false);

        #endregion

        public Recorder(RecorderParams Params)

        {

            this.Params = Params;

            writer = Params.CreateAviWriter();

            videoStream = Params.CreateVideoStream(writer);

            videoStream.Name = "Captura";

            screenThread = new Thread(RecordScreen)

            {

                Name = typeof(Recorder).Name + ".RecordScreen",

                IsBackground = true

            };

            screenThread.Start();

        }

        public void Dispose()

        {

            stopThread.Set();

            screenThread.Join();

            writer.Close();

            stopThread.Dispose();

        }

        void RecordScreen()

        {

            var frameInterval = TimeSpan.FromSeconds(1 / (double)writer.FramesPerSecond);

            var buffer = new byte[Params.Width * Params.Height * 4];

            Task videoWriteTask = null;

            var timeTillNextFrame = TimeSpan.Zero;

            while (!stopThread.WaitOne(timeTillNextFrame))

            {

                var timestamp = DateTime.Now;

                Screenshot(buffer);

                videoWriteTask?.Wait();

                videoWriteTask = videoStream.WriteFrameAsync(true, buffer, 0, buffer.Length);

                timeTillNextFrame = timestamp + frameInterval - DateTime.Now;

                if (timeTillNextFrame < TimeSpan.Zero)

                    timeTillNextFrame = TimeSpan.Zero;

            }

            videoWriteTask?.Wait();

        }

        public void Screenshot(byte[] Buffer)

        {

            using (var BMP = new Bitmap(Params.Width, Params.Height))

            {

                using (var g = Graphics.FromImage(BMP))

                {

                    g.CopyFromScreen(Point.Empty, Point.Empty, new Size(Params.Width, Params.Height), CopyPixelOperation.SourceCopy);

                    g.Flush();

                    var bits = BMP.LockBits(new Rectangle(0, 0, Params.Width, Params.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppRgb);

                    Marshal.Copy(bits.Scan0, Buffer, 0, Buffer.Length);

                    BMP.UnlockBits(bits);

                }

            }

        }

    }

}

end.............

and call this class on  Program.cs and pass some parameters  see on above screen shot 

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