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• How Read .mp4 video and then put it in NamedPipeServerStream ?

  23 mars 2019, par Oleg Pi

  How I Might Put .mp4 readed with StreamReader and then put it into pipe ?
  I need to read the data and send it to the pipe. I read the .mpg4 file. Then I process it through ffmpeg. Am I trying to send the file to the pipe correctly ?

  public void getVideoFramesFromLocalPath(string fileName, string outputFileName, int period)
  
      {
  
          Thread th1 = new Thread(new ParameterizedThreadStart(PipeLine));
  
          th1.Start(fileName);            
  
  
  
          int bitrate = 5000;
  
          int fps = 10;
  
  
  
          string strTakeFrame = $"-f image2pipe -i pipe:videoPipe -qscale:v 4 -vf fps=1/{period} {outputFileName}_%04d.jpg";       
  
  
  
          ffProcessStart(strTakeFrame);
  
      }
  
  
  
      private async void PipeLine(object fileName)
  
      {
  
          StreamReader SR = new StreamReader((string)fileName);
  
          NamedPipeServerStream pipeServer = new NamedPipeServerStream("videoPipe", PipeDirection.Out);
  
          pipeServer.WaitForConnection();
  
          StreamWriter SW = new StreamWriter(pipeServer);
  
          SW.Write(SR.ReadToEnd());
  
          SW.Flush();
  
      }
  
      static void ffProcessStart(string commandLine)
  
      {
  
          ProcessStartInfo startInfo = new ProcessStartInfo();            
  
  
  
          startInfo.CreateNoWindow = false;                                
  
  
  
          startInfo.UseShellExecute = false;                              
  
  
  
          startInfo.FileName = @"ffmpeg.exe";                             
  
  
  
          startInfo.WindowStyle = ProcessWindowStyle.Hidden;              
  
  
  
          startInfo.Arguments = commandLine;                              
  
  
  
          try
  
          {
  
              using (Process exeProcess = Process.Start(startInfo))       
  
              {
  
                  exeProcess.WaitForExit();                              
  
              }
  
          }
  
          catch (Exception e)
  
          {
  
              Console.WriteLine(e);
  
          }
  
      }

• Anomalie #4214 (Rejeté) : Notices sous easyphp et php 7.3 rc3

  2 novembre 2018, par Franck D

  Sous easyphp avec php 7.3rc3 avec un spip 24140 tout neuf, j’ai donc aussi le commit https://zone.spip.net/trac/spip-zone/changeset/112276/spip-zone (qui n’a sans doute rien avoir avec le problème)
  A savoir que pour les tests, je fais l’ajout d’un fichier mes_options contenant :
  

  <span class="CodeRay"><span class="inline-delimiter">&lt;?php</span>
  <span class="predefined">define</span>(<span class="string"><span class="delimiter">'</span><span class="content">_NO_CACHE</span><span class="delimiter">'</span></span>, -<span class="integer">1</span>);
  <span class="predefined">define</span>(<span class="string"><span class="delimiter">'</span><span class="content">_INTERDIRE_COMPACTE_HEAD_ECRIRE</span><span class="delimiter">'</span></span>, <span class="predefined-constant">true</span>);
  <span class="predefined">error_reporting</span>(<span class="exception">E_ALL</span>^<span class="exception">E_NOTICE</span>);
  ini_set (<span class="string"><span class="delimiter">"</span><span class="content">display_errors</span><span class="delimiter">"</span></span>, <span class="string"><span class="delimiter">"</span><span class="content">On</span><span class="delimiter">"</span></span>);
  <span class="predefined">define</span>(<span class="string"><span class="delimiter">'</span><span class="content">SPIP_ERREUR_REPORT</span><span class="delimiter">'</span></span>,<span class="exception">E_ALL</span>);
  <span class="predefined">$GLOBALS</span>[<span class="string"><span class="delimiter">'</span><span class="content">taille_des_logs</span><span class="delimiter">'</span></span>] = <span class="integer">500</span>;
  <span class="predefined">define</span>(<span class="string"><span class="delimiter">'</span><span class="content">_MAX_LOG</span><span class="delimiter">'</span></span>, <span class="integer">500000</span>);
  <span class="predefined">define</span>(<span class="string"><span class="delimiter">'</span><span class="content">_LOG_FILELINE</span><span class="delimiter">'</span></span>,<span class="predefined-constant">true</span>);
  <span class="predefined">define</span>(<span class="string"><span class="delimiter">'</span><span class="content">_LOG_FILTRE_GRAVITE</span><span class="delimiter">'</span></span>,<span class="integer">8</span>);
  <span class="predefined">define</span>(<span class="string"><span class="delimiter">'</span><span class="content">_DEBUG_SLOW_QUERIES</span><span class="delimiter">'</span></span>, <span class="predefined-constant">true</span>);
  <span class="predefined">define</span>(<span class="string"><span class="delimiter">'</span><span class="content">_BOUCLE_PROFILER</span><span class="delimiter">'</span></span>, <span class="integer">5000</span>);
  </span>
  Télécharger

  J’ai un warning qui s’affiche, mais pour le voir, j’ai installer manuellement le plugin https://plugins.spip.net/simplog.html dans le dossier "plugins"
  Puis après avoir fait l’ajout du dépôt de la zone, je vais à la page /ecrire/ ?exec=charger_plugin et je clique sur le bouton "Rechercher" de la boite "Rechercher et ajouter des plugins"

  Pour info, sinon, cela semble quand même fonctionner normalement :-)

• How to display live video stream from ffmpeg in C#/WPF ?

  9 avril 2019, par Kevin McDaniel

  I am trying to get an output from FFmpeg.exe to display live on my wpf media player. The inputs to FFmpeg are an IP camera and a video file (mp4).

  The WPF media player needs a URI as the input. So, I have tried hosting a Udp server for FFmpeg to post to (which I can log the data coming in on the console). Then I try to get the stream using the media player, but no success.

  My Udp listener :

  UdpClient _udpServer = new UdpClient(5000);
  
  UdpClient _udpClient = new UdpClient(5001);
  
  private void UdpListen() {
  
     while (true)
  
     {
  
        IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
  
        Byte[] receiveBytes = _udpServer.Receive(ref RemoteIpEndPoint);
  
        if (RemoteIpEndPoint.ToString() != "192.168.1.110:5001")
  
        {
  
           IPEndPoint ep = new IPEndPoint(IPAddress.Parse("192.168.1.110"), 5001);
  
           _udpClient.Send(receiveBytes, receiveBytes.Length, ep);
  
        }
  
        Console.WriteLine("receive data from " + RemoteIpEndPoint.ToString() + ": " + receiveBytes.Length);
  
     }
  
  }

  The ffmpeg output : ... -f mpegts udp ://192.168.1.110:5000

  I pass this into the media player : udp ://192.168.1.110:5001

  I am expecting to see the video file being displayed as ffmpeg is processing the output. But, I just see ffmpeg do its processing, and the Udp listener writing to the console.
  Let me know where I am going wrong, thanks in advance