using System.Diagnostics;

public class ScreenRecorder
{
    private Process ffmpegProcess;

    public void StartRecording(string outputPath)
    {
        // Replace the path with your actual path to ffmpeg.exe and your audio device name
        string ffmpegPath = @"D:\Captured Videos\ffmpeg.exe";
        string audioDeviceName = "Stereo Mix (Realtek(R) Audio)";  // Replace with actual device name
        string videoArguments = "-f gdigrab -framerate 30 -i desktop";
        string audioArguments = $"-f dshow -i audio=\"{audioDeviceName}\"";
        string fileArguments = $"-preset ultrafast -pix_fmt yuv420p \"{outputPath}\"";

        ProcessStartInfo startInfo = new ProcessStartInfo
        {
            FileName = ffmpegPath,
            Arguments = $"{videoArguments} {audioArguments} {fileArguments}",
            UseShellExecute = false,
            CreateNoWindow = true,
            RedirectStandardInput = true,
            RedirectStandardOutput = true,
            RedirectStandardError = true
        };

        ffmpegProcess = new Process { StartInfo = startInfo };
        ffmpegProcess.EnableRaisingEvents = true;
        ffmpegProcess.Start();
        ffmpegProcess.BeginErrorReadLine();
        ffmpegProcess.BeginOutputReadLine();
    }

    public void StopRecording()
    {
        if (ffmpegProcess != null && !ffmpegProcess.HasExited)
        {
            ffmpegProcess.StandardInput.WriteLine("q");  // Sending 'q' to FFmpeg to stop recording
            ffmpegProcess.Kill();
            ffmpegProcess.WaitForExit();
        }
    }
}