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• Anomalie #3811 (Nouveau) : Sur le Wiki de Contrib = versionning apparent incorrect !

  24 juillet 2016, par YannX DYX

  Bonsoir,
  au passage /je rajoutais une suggestion sur le Carnet/ j’ai aperçu un soulignement pas exact lors de l’examen de versionning d’article :
  https://contrib.spip.net/ecrire/?exec=article&id_article=4088

  Voici le texte exact qui avait été rajouté :
  

  viser l’intégration de http://www.templatemo.com/tm-455-vi... (avec une sous-couche de mapping &lt ;code&gt ;.less&lt ;/code&gt ; pour faire correspondre les styles spipr/Z-core aux styles de Visual Admin)..
  

  L’image d’extrait prend en fait deux modifications : voir piece jointe...
  pour le lien [1]

  Serait-ce dû à la présence de la balise cachée .less!! dans le texte inséré ??

• JS Create a queue for fluent-ffmpeg with max 5 convertions

  25 juin 2022, par John L.

  I use ffmpeg to convert my songs from webm to mp3 but ffmpeg uses resources and I really need to make a FIFO queue that will be converting max 5 songs at the same time and make all the others wait.

  


  I am using nodejs. Could anyone help me with that fifo queue and how would fluent ffmpeg work ?

  


  I've seen some other questions here on StackOverflow about a queue for ffmpeg but they were asking in other languages, not javascript and they were using the ffmepg cli tool while I use fluent ffmepg

  


  My code :

  


  ffmpeg(stream)
    .format("mp3")
    .audioBitrate(req.query.quality ? req.query.quality : 256)
    .on("end", () => {
        console.log("finished:)
    })
    .pipe(res, { end: true });


  


• PHP readfile on a file which is increasing in size

  13 février 2013, par Sathiya Sundaram

  Is it possible to use PHP readfile function on a remote file whose size is unknown and is increasing in size ? Here is the scenario :

  I'm developing a script which downloads a video from a third party website and simultaneously trans-codes the video into MP3 format. This MP3 is then transferred to the user via readfile.

  The query used for the above process is like this :

  wget -q -O- "VideoURLHere" | ffmpeg -i - "Output.mp3" > /dev/null 2>&1 &

  So the file is fetched and encoded at the same time.
  Now when the above process is in progress I begin sending the output mp3 to the user via readfile. The problem is that the encoding process takes some time and therefore depending on the users download speed readfile reaches an assumed EoF before the whole file is encoded, resulting in the user receiving partial content/incomplete files.

  My first attempt to fix this was to apply a speed limit on the users download, but this is not foolproof as the encoding time and speed vary with load and this still led to partial downloads.

  So is there a way to implement this system in such a way that I can serve the downloads simultaneously along with the encoding and also guarantee sending the complete file to the end user ?

  Any help is appreciated.

  EDIT :
  In response to Peter, I'm actually using fread(read readfile_chunked) :

   <?php
  
   function readfile_chunked($filename,$retbytes=true) {
  
              $chunksize = 1*(1024*1024); // how many bytes per chunk
  
              $totChunk = 0;
  
              $buffer = '';
  
              $cnt =0;
  
              $handle = fopen($filename, 'rb');
  
              if ($handle === false) {
  
                  return false;
  
              }
  
              while (!feof($handle)) {
  
                  //usleep(120000); //Used to impose an artificial speed limit
  
                  $buffer = fread($handle, $chunksize);
  
                  echo $buffer;
  
                  ob_flush();
  
                  flush();
  
                  if ($retbytes) {
  
                      $cnt += strlen($buffer);
  
                  }
  
              }
  
                  $status = fclose($handle);
  
              if ($retbytes && $status) {
  
                  return $cnt;        // return num. bytes delivered like readfile() does.
  
              }
  
              return $status;
  
          }
  
          readfile_chunked($linkToMp3);
  
      ?>

  This still does not guarantee complete downloads as depending on the users download speed and the encoding speed, the EOF() may be reached prematurely.

  Also in response to theJeztah's comment, I'm trying to achieve this without having to make the user wait..so that's not an option.