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• Additional : Add Brazillian CNH number (Carteira Nacional de Habilitac…

  5 novembre 2018, par joaoissamu

  Additional : Add Brazillian CNH number (Carteira Nacional de Habilitacao) (#2234)

• How to stop ffmpeg when recording the desktop to save the file to the hard disk ?

  27 juin 2022, par Eliot Shein

  I'm trying to record the desktop with the ffmpeg and save a video file to the hard disk.

  


  using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Testings
{
    internal class FFmpeg_Capture
    {
        Process process;

        public FFmpeg_Capture()
        {
            process = new Process();
        }

        public void Start(string FileName, int Framerate)
        {
            process.StartInfo.FileName = @"D:\Captured Videos\ffmpeg.exe"; // Change the directory where ffmpeg.exe is.  
            process.EnableRaisingEvents = false;
            process.StartInfo.WorkingDirectory = @"D:\Captured Videos"; // The output directory  
            process.StartInfo.Arguments = @"-f gdigrab -framerate " + Framerate +
                " -i desktop -preset ultrafast - pix_fmt yuv420p " + FileName;
            process.Start();
            process.StartInfo.UseShellExecute = false;
            process.StartInfo.CreateNoWindow = false;
            Stop();
        }

        public void Stop()
        {
            process.Close();
        }
    }
}


  


  And using it in form1 :

  


  private void btnRecord_Click(object sender, EventArgs e)
        {
            recordToggle = !recordToggle;

            if (recordToggle)
            {
                btnRecord.Text = "Stop";
                record.Start("Testing", 60);
            }
            else
            {
                btnRecord.Text = "Record";
                record.Stop();
            }
        }


  


  but the file Testing never saved to the hard disk. my guess is that

  


  process.Close();


  


  is not like ctrl+ c and ctrl + c is what stopping the ffmpeg and save the file.

  


  This is working but how to remove the black window of the ffmpeg ?

  


  

  


  using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.IO.Pipes;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Testings
{
    internal class FFmpeg_Capture
    {
        Process process;

        public FFmpeg_Capture()
        {
            process = new Process();
        }

        public void Start(string FileName, int Framerate)
        {
            process.StartInfo.FileName = @"D:\Captured Videos\ffmpeg.exe"; // Change the directory where ffmpeg.exe is.  
            process.EnableRaisingEvents = false;
            process.StartInfo.WorkingDirectory = @"D:\Captured Videos\"; // The output directory  
            process.StartInfo.Arguments = @"-y -f gdigrab -framerate " + Framerate +
                " -i desktop -preset ultrafast -pix_fmt yuv420p " + FileName;
            process.StartInfo.UseShellExecute = false;
            process.StartInfo.CreateNoWindow = false;
            process.StartInfo.RedirectStandardInput = true; //Redirect stdin
            process.Start();
        }

        public void Stop()
        {
            byte[] qKey = Encoding.GetEncoding("gbk").GetBytes("q"); //Get encoding of 'q' key
            process.StandardInput.BaseStream.Write(qKey, 0, 1); //Write 'q' key to stdin of FFmpeg sub-processs
            process.StandardInput.BaseStream.Flush(); //Flush stdin (just in case).
            process.Close();
        }
    }
}


  


• A blocked external process in a swing GUI

  27 décembre 2012, par user1932255

  I am developing an encoder with java swing and ffmpeg. I created a GUI interface in which I specify my inputs (devices, frame rate, bitrate..). Then I call ffmpeg to encode and stream.

  My problem is that the encoding class is well executed from a main class but it is blocked when called from the swing interface (specifically jButtonactionperformed()).

  Can anyone help me ?

  here is my button action

  private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
  
      Encode s = new Encode();
  
      s.Encode(cmdLine);
  
  }

  and here is my encoding method

  public void Encode(String cmdLine) {
  
      try {
  
          Process p2 = Runtime.getRuntime().exec(cmdLine);
  
          //logProcessOutputAndErrors(p2); 
  
      }
  
      catch(Exception ex) {
  
          ex.printStackTrace();
  
      }
  
  }

  Ps : Cmdline is the command i collect from inputs