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• How do I correctly convert .avi to .flv with ffmpeg ? [closed]

  25 septembre 2012, par terbooter

  UPDATE
  Shame on me )
  I chacked red5 logs again and found that I placed converted files to wrong place.
  Now all works fine

  I have two red5 apps.

  1. Recorder. It can record live stream and save it to flv file to disk

     private void startRecord(String uid, String name, IConnection connection) {
     
         // Get a reference to the current broadcast stream.
     
         ClientBroadcastStream stream = (ClientBroadcastStream) this.getBroadcastStream(
     
                 connection.getScope(), name);
     
         try {
     
             // Save the stream to disk.
     
             String path = uid + "/" + name;
     
             stream.saveAs(path, true);
     
     
     
             System.out.println("file..:" + stream.getSaveFilename());
     
     
     
         } catch (Exception e) {
     
             System.out.println("Error while saving stream: " + name + e);
     
         }
     
     }
     
     
     
     private void stopRecord(String name) {
     
         IConnection conn = Red5.getConnectionLocal();
     
         System.out.println("Stop recording show for: {}" + conn.getScope().getContextPath());
     
     
     
         ClientBroadcastStream stream = (ClientBroadcastStream) this.getBroadcastStream(conn.getScope(), name);
     
         // Stop recording.
     
         if (stream != null) {
     
             stream.stopRecording();
     
         }
     
     }

  2. Second red5 app (Chat) streams recorded flv file to flash client

     public static String serverStreamCreate(String path, String streamName) {
     
     
     
         IServerStream serverStream = StreamUtils.createServerStream(Red5.getConnectionLocal().getScope(), streamName);
     
         SimplePlayItem item = SimplePlayItem.build(path);
     
     
     
         IPlaylistController controller = new MyPlayListController();
     
     
     
         serverStream.setPlaylistController(controller);
     
         serverStream.setRepeat(false);
     
         serverStream.addItem(item);
     
         serverStream.addItem(item);
     
         serverStream.start();
     
         return streamName;
     
     }

  If I record stream from flash client to flv file with Recorder and after that stream this flv file back to client with Chat, all works fine.

  Now I want to convert avi file to flv and stream it from red5 app to flash client.
  I used ffmpeg

  ffmpeg -i 24.avi -ar 22050 -an -f flv -b 500k -s 320x240 -y 24_c.flv

  But if I stream 24_c.flv from Chat app flash client have no video.
  24_c.flv cant be playd by VLC player and have same code information as flv file created by Recorder red5 app.

  I really dont know where to dig.

• FFmpegPHP get thumbnail from external URL

  22 janvier 2013, par jValdron

  I'm trying to create thumbnails from external videos, mostly MP4s and FLVs. I'm using FFmpegPHP. I already have the thumbnail generation working fine, however, I need to load the video entirely on my server first. Would it be possible to stream only a small part of the video then extract the thumbnail from that ?

  Here's the code I have so far :

  require_once PRIV . 'Vendor/FFmpegPHP/FFmpegAutoloader.php';
  
  
  
  // Download the whole video.
  
  $video = file_get_contents($_PUT['video']);
  
  $file = 'path_to_cache';
  
  file_put_contents($file, $video);
  
  
  
  $movie = new FFmpegMovie($file);
  
  
  
  // Generate the thumbnail.
  
  $thumb = $movie->getFrame($movie->getFrameCount() / 2);
  
  $thumb->resize(320, 240);
  
  imagejpeg($thumb->toGDImage(), 'path_to_thumb');

  Anyone has a suggestion ?

  EDIT

  As Brad suggested, here is the updated code :

  $file = CACHE . 'moodboard_video_' . rand();
  
  $fh = fopen($file, 'w');
  
  $size = 0;
  
  
  
  curl_setopt($ch, CURLOPT_URL, $_PUT['video']);
  
  curl_setopt($ch, CURLOPT_HEADER, 0);
  
  curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use($fh, &$size){
  
      $length = fwrite($fh, $data);
  
  
  
      if($length === FALSE) {
  
          return 0;
  
      } else {
  
          $size += $length;
  
      }
  
  
  
      // Downloads 1MB.
  
      return $size < 1024 * 1024 * XXXXXX ? $length : 0;
  
  });
  
  
  
  curl_exec($ch);
  
  
  
  fclose($fh);
  
  curl_close($ch);
  
  
  
  // Create the thumbnail.
  
  $thumb = $movie->getFrame(XXXXXX);
  
  $thumb->resize(static::DEFAULT_THUMBNAIL_WIDTH, $thumb->getHeight() / $thumb->getWidth() * static::DEFAULT_THUMBNAIL_WIDTH);
  
  $image = $thumb->toGDImage();
  
  imagejpeg($image, PRIV . static::THUMBNAILS_PATH . $item->getLastInsertIdentifier() . '_' . static::DEFAULT_THUMBNAIL_WIDTH);

• Revision 66607 : Remise a plat des listes d’objet : structure commune .liste[.long][.short] ...

  9 octobre 2012, par cedric@… — Log

  Remise a plat des listes d’objet :
  structure commune .liste[.long][.short] &gt ; .liste-items[.long][.short] &gt ; .item
  le contenu de chaque .item est fourni par inclure/resume/xxx.html (article, rubrique, breve... a completer) qui a une structure commune (héritée de hNews) dans un &lt ;article&gt ;
  Les classes modificatrices .long ou .short permettent d’avoir une liste plus detaillee ou plus courte, mais ce n’est qu’une option de presentation, le html etant identique.
  Le seul parametre pris en compte par resume/xxx est "coupe" qui permet de changer la longueur de coupe
  Un repertoire de demo (activé pour les seuls webmestres) avec une page de presentation des listes (toutes variantes)
  .secondary sur le contenu secondaire du layout (les colonnes)