Recherche avancée

Sur d’autres sites (11024)

• My crazy linux.conf.au week

  9 février 2012, par silvia

  In January I attended the annual Australian Linux and Open Source conference (LCA). But since I was sick all of January and had a lot to catch up on, I never got around to sharing all the talks that I gave during that time.

  Drupal Down Under

  It started with a talk at Drupal Down Under, which happened the weekend before LCA. I gave a talk titled “HTML5 video specifications” (video, slides).

  I spoke about the video and audio element in HTML5, how to provide fallback content, how to encode content, how to control them from JavaScript, and briefly about Drupal video modules, though the next presentation provided much more insight into those. I explained how to make the HTML5 media elements accessible, including accessible controls, captions, audio descriptions, and the new WebVTT file format. I ran out of time to introduce the last section of my slides which are on WebRTC.

  Linux.conf.au

  On the first day of LCA I gave a talk both in the Multimedia Miniconf and the Browser Miniconf.

  Browser Miniconf

  In the Browser Miniconf I talked about “Web Standardisation – how browser vendors collaborate, or not” (slides). Maybe the most interesting part about this was that I tried out a new slide “deck” tool called impress.js. I’m not yet sure if I like it but it worked well for this talk, in which I explained how the HTML5 spec is authored and who has input.

  I also sat on a panel of browser developers in the Browser Miniconf (more as a standards than as a browser developer, but that’s close enough). We were asked about all kinds of latest developments in HTML5, CSS3, and media standards in the browser.

  Multimedia Miniconf

  In the Multimedia Miniconf I gave a “HTML5 media accessibility update” (slides). I talked about the accessibility problems of Flash, how native HTML5 video players will be better, about accessible video controls, captions, navigation chapters, audio descriptions, and WebVTT. I also provided a demo of how to synchronize multiple video elements using a polyfill for the multitrack API.

  I also provided an update on HTTP adaptive streaming APIs as a lightning talk in the Multimedia Miniconf. I used an extract of the Drupal conference slides for it.

  Main conference

  Finally, and most importantly, Alice Boxhall and myself gave a talk in the main linux.conf.au titled “Developing Accessible Web Apps – how hard can it be ?” (video, slides). I spoke about a process that you can follow to make your Web applications accessible. I’m writing a separate blog post to explain this in more detail. In her part, Alice dug below the surface of browsers to explain how the accessibility markup that Web developers provide is transformed into data structures that are handed to accessibility technologies.

• using ffmpeg as multiple downloads

  26 avril 2013, par user2321982

  well guys, I'm having problems with my application.
  well I'll explain more, I'm using the plugin uploader uploads multiple videos and I'm using the ffmpeg extension to my php version.

  <code class="echappe-js">&lt;script type=&quot;text/javascript&quot;&gt;<br />
  
  // Convert divs to queue widgets when the DOM is ready<br />
  
  $(function() {<br />
  
      $(&quot;#uploader&quot;).pluploadQueue({<br />
  
          // General settings<br />
  
          runtimes : &amp;#39;gears,flash,silverlight,browserplus,html5&amp;#39;,<br />
  
          url : &amp;#39;upload.php?id=&amp;lt;?= $login_usuario; ?&gt;&amp;amp;name=&amp;lt;?= $name_user; ?&gt;&amp;#39;,<br />
  
          flash_swf_url : &amp;#39;plugins/plupload/plupload.flash.swf&amp;#39;,<br />
  
          containers: &amp;#39;plupload&amp;#39;,<br />
  
          multipart: true,<br />
  
          urlstream_upload: true,<br />
  
          multipart_params:{directory:&amp;#39;uploads&amp;#39;},<br />
  
          multi_selection: true,<br />
  
  <br />
  
          max_file_size : &amp;#39;500mb&amp;#39;,<br />
  
          chunk_size : &amp;#39;1mb&amp;#39;,<br />
  
          unique_names : true,<br />
  
  <br />
  
          // Specify what files to browse for<br />
  
          filters : [<br />
  
              {title : &quot;Video Files&quot;, extensions : &quot;avi,mpg,wmv,flv,3gp,mpeg,mpeg4,mpg4,mp4&quot;}<br />
  
          ],<br />
  
          // Silverlight settings<br />
  
          silverlight_xap_url : &amp;#39;plugins/plupload/plupload.silverlight.xap&amp;#39;<br />
  
      });<br />
  
  <br />
  
      uploader.ini();<br />
  
  <br />
  
   // Client side form validation<br />
  
          $(&amp;#39;form&amp;#39;).submit(function(e) {<br />
  
              var uploader = $(&amp;#39;#uploader&amp;#39;).plupload(&amp;#39;getUploader&amp;#39;);<br />
  
  <br />
  
              // Files in queue upload them first<br />
  
              if (uploader.files.length &gt; 0) {<br />
  
                  // When all files are uploaded submit form<br />
  
                  uploader.bind(&amp;#39;StateChanged&amp;#39;, function() {<br />
  
                      if (uploader.files.length === (uploader.total.uploaded + uploader.total.failed)) {<br />
  
                          $(&amp;#39;form&amp;#39;)[0].submit();<br />
  
                      }<br />
  
                  });<br />
  
  <br />
  
                  uploader.start();<br />
  
              } else<br />
  
                  alert(&amp;#39;You must at least upload one file.&amp;#39;);<br />
  
  <br />
  
              return false;<br />
  
          });<br />
  
      });<br />
  
  &lt;/script&gt;
  
                              
  You browser doesn't have Flash, Silverlight, Gears, BrowserPlus or HTML5 support.
  
  
  

  well he calls javascript in a php file, in case it will upload the videos.

  what I want is to get the length, resolution, file size and take a screenshot of the video randomly, so far so good, the problem is that it only works with only one upload at a time.
  When sending more than one he does the procedure with ffmpeg, besides the most is not taking a screenshot of the video.
  below is my code

  <?php
  
  ini_set('max_execution_time', 300); //300 seconds = 5 minutes
  
  if (!extension_loaded ('ffmpeg') ) exit ( 'ffmpeg não foi carregado!' );
  
  // HTTP headers for no cache etc
  
  header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
  
  header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
  
  header("Cache-Control: no-store, no-cache, must-revalidate");
  
  header("Cache-Control: post-check=0, pre-check=0", false);
  
  header("Pragma: no-cache");
  
  
  
  include("includes/seguranca.php");
  
  include("includes/classes/class.mysql.php");
  
  include("includes/funcoes/sql_inject.php");
  
  
  
  $id_user = anti_injection($_GET['id']);
  
  session_start();
  
  
  
  // Settings
  
  //$targetDir = ini_get("upload_tmp_dir") . DIRECTORY_SEPARATOR . "plupload";
  
  $targetDir = 'uploads/';
  
  
  
  //$cleanupTargetDir = false; // Remove old files
  
  //$maxFileAge = 60 * 60; // Temp file age in seconds
  
  
  
  // 5 minutes execution time
  
  @set_time_limit(5 * 60);
  
  
  
  // Uncomment this one to fake upload time
  
  // usleep(5000);
  
  
  
  // Get parameters
  
  $chunk = isset($_REQUEST["chunk"]) ? $_REQUEST["chunk"] : 0;
  
  $chunks = isset($_REQUEST["chunks"]) ? $_REQUEST["chunks"] : 0;
  
  $fileName = isset($_REQUEST["name"]) ? $_REQUEST["name"] : '';
  
  
  
  // Clean the fileName for security reasons
  
  $fileName = preg_replace('/[^\w\._]+/', '', $fileName);
  
  
  
  // Make sure the fileName is unique but only if chunking is disabled
  
  if ($chunks < 2 && file_exists($targetDir . DIRECTORY_SEPARATOR . $fileName)) {
  
      $ext = strrpos($fileName, '.');
  
      $fileName_a = substr($fileName, 0, $ext);
  
      $fileName_b = substr($fileName, $ext);
  
  
  
      $count = 1;
  
      while (file_exists($targetDir . DIRECTORY_SEPARATOR . $fileName_a . '_' . $count . $fileName_b))
  
          $count++;
  
  
  
      $fileName = $fileName_a . '_' . $count . $fileName_b;
  
  
  
  
  
  }
  
  
  
  // Create target dir
  
  if (!file_exists($targetDir))
  
      @mkdir($targetDir);
  
  
  
  // Look for the content type header
  
  if (isset($_SERVER["HTTP_CONTENT_TYPE"]))
  
      $contentType = $_SERVER["HTTP_CONTENT_TYPE"];
  
  
  
  if (isset($_SERVER["CONTENT_TYPE"]))
  
      $contentType = $_SERVER["CONTENT_TYPE"];
  
  
  
  // Handle non multipart uploads older WebKit versions didn't support multipart in HTML5
  
  if (strpos($contentType, "multipart") !== false) {
  
      if (isset($_FILES['file']['tmp_name']) && is_uploaded_file($_FILES['file']['tmp_name'])) {
  
  
  
  
  
          // Open temp file
  
          $out = fopen($targetDir . DIRECTORY_SEPARATOR . $fileName, $chunk == 0 ? "wb" : "ab");
  
          if ($out) {
  
              // Read binary input stream and append it to temp file
  
              $in = fopen($_FILES['file']['tmp_name'], "rb");
  
  
  
              if ($in) {
  
                  while ($buff = fread($in, 4096))
  
                      fwrite($out, $buff);
  
              } else
  
                  die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}');
  
              fclose($in);
  
              fclose($out);
  
              @unlink($_FILES['file']['tmp_name']);
  
  
  
  
  
  
  
          } else
  
              die('{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}');
  
      } else
  
          die('{"jsonrpc" : "2.0", "error" : {"code": 103, "message": "Failed to move uploaded file."}, "id" : "id"}');
  
  } else {
  
      // Open temp file
  
      $out = fopen($targetDir . DIRECTORY_SEPARATOR . $fileName, $chunk == 0 ? "wb" : "ab");
  
      if ($out) {
  
          // Read binary input stream and append it to temp file
  
          $in = fopen("php://input", "rb");
  
  
  
          if ($in) {
  
              while ($buff = fread($in, 4096))
  
                  fwrite($out, $buff);
  
          } else
  
              die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}');
  
  
  
          fclose($in);
  
          fclose($out);
  
      } else
  
          die('{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}');
  
  }
  
  $photoName = $_FILES['file']['name'];
  
  
  
  $exploded_photoName = explode('.', $photoName);
  
  
  
  $user_id = $_SESSION['SESS_MEMBER_ID'];
  
  
  
  if(!isset($_SESSION[$photoName])) {
  
  
  
      $_SESSION[$photoName] = '1';
  
  }
  
  
  
  if($chunk==1){
  
  
  
  $movie_file = realpath("/uploads/".$fileName);
  
  
  
  // instancia a classe ffmpeg_movie para pegarmos as informações que queremos o vídeo
  
  $movie = new ffmpeg_movie($movie_file);
  
  // pegamos a duranção do video em segundos
  
  $duration = round ( $movie->getDuration() , 0 );
  
  // recebemos o número de frames do vídeo
  
  $totalFrames = $movie->getFrameCount();
  
  // recebemos a altura do vídeo em pixels
  
  $height = $movie->getFrameHeight ();
  
  // recebemos a largura do vídeo em pixels
  
  $width = $movie->getFrameWidth ();
  
  
  
  $thumbnailOf = $movie->getFrameRate() * 5;
  
  
  
  $thumbnailOf = round ( $movie->getFrameCount() / 2 );
  
  
  
  // precisamos criar uma imagem GD para o ffmpeg-php trabalhar nela
  
  $image = imagecreatetruecolor ($width,$height ) ;
  
  // criamos a instancia do frame com a classe ffmpeg_frame
  
  $frame = new ffmpeg_frame ($image);
  
  // escolhemos o frame que queremos salvar como jpeg
  
  $thumbnailOf = rand (1,$movie->getFrameCount());
  
  // recebe o frame
  
  $frame = $movie->getFrame ( $thumbnailOf );
  
  // converte para uma imagem GD
  
  $image = $frame->toGDImage ();
  
  
  
  $size = filesize("uploads/".$fileName);
  
  
  
  $valuea = rand(0,100);
  
  $valueb = rand(0,100);
  
  $valuec = rand(0,10);
  
  
  
  $nome = @md5(date('now') * $valuea - $valueb / $valuec);
  
  
  
  $dir = realpath("uploads/snapshots/$nome.jpg");
  
  //salva no HD.
  
  imagejpeg($image, $dir, 100);
  
  
  
  
  
  $resolu = $width."x".$height;
  
  
  
      mysql_query("INSERT INTO video 
  
  (poster_id,duration,video,titulo,resolucao,tamanho) 
  
      VALUES
  
  ('$id_user','$duration','$fileName','$exploded_photoName[0]','$resolu','$size')") or die(mysql_error());
  
  
  
  }
  
  // Return JSON-RPC response
  
  die('{"jsonrpc" : "2.0", "result" : null, "id" : "id"}');
  
  
  
  ?>

  I did another method not so effective to do what I want but it only works if I open the page individually.

  I removed the code from ffmpeg extension and put an include to that page.

  <?
  
  ini_set('max_execution_time', 300); //300 seconds = 5 minutes
  
  if (!extension_loaded ('ffmpeg') ) exit ( 'ffmpeg não foi carregado!' );
  
  
  
  include("includes/seguranca.php");
  
  include("includes/classes/class.mysql.php");
  
  include("includes/funcoes/sql_inject.php");
  
  
  
  $id_user = @anti_injection($_GET['id']);
  
  
  
  class process{
  
      public $videos;
  
      public $target;
  
      public $id_vid;
  
  
  
  public function screen(){
  
  
  
  $videos = $this->videos;
  
  $target = $this->target;
  
  
  
  $movie_file = realpath($videos);
  
  // instancia a classe ffmpeg_movie para pegarmos as informações que queremos o vídeo
  
  $movie = new ffmpeg_movie($movie_file);
  
  $totalFrames = $movie->getFrameCount();
  
  $thumbnailOf = $movie->getFrameRate() * 5;
  
  $thumbnailOf = round ( $movie->getFrameCount() / 2 );
  
  
  
  // criamos a instancia do frame com a classe ffmpeg_frame
  
  $frame = new ffmpeg_frame ( $image );
  
  // escolhemos o frame que queremos salvar como jpeg
  
  
  
  $thumbnailOf = rand (1,$movie->getFrameCount());
  
  // recebe o frame
  
  $frame = $movie->getFrame ( $thumbnailOf );
  
  // converte para uma imagem GD
  
  $image = $frame->toGDImage ();
  
  $valuea = rand(0,100);
  
  $valueb = rand(0,100);
  
  $valuec = rand(0,10);
  
  
  
  $nome = @md5(date('now') * $valuea - $valueb / $valuec);
  
  
  
  $dir = $target."snapshots/".$nome.".jpeg";
  
  //salva no HD.
  
  imagejpeg($image,$dir, 100);
  
  
  
  $q = new Query;
  
  $q  ->update('video')
  
      ->set(
  
          array(
  
             'screen'=>$nome.".jpeg"
  
          )
  
      )
  
          ->where_equal_to(
  
                  array(
  
                          'id_video'=>$this->id_vid
  
                  )
  
          )
  
          ->limit(1)
  
  
  
      ->run();
  
  
  
  }
  
  
  
  
  
  public function duration(){
  
  
  
  $videos = $this->videos;    
  
  $movie_file = realpath($videos);
  
  // instancia a classe ffmpeg_movie para pegarmos as informações que queremos o vídeo
  
  $movie = new ffmpeg_movie($movie_file);
  
  // pegamos a duranção do video em segundos
  
  $duration = round ( $movie->getDuration() , 0 );
  
  
  
  $q = new Query;
  
  $q  ->update('video')
  
      ->set(
  
          array(
  
             'duration'=>$duration
  
          )
  
      )
  
          ->where_equal_to(
  
                  array(
  
                          'id_video'=>$this->id_vid
  
                  )
  
          )
  
          ->limit(1)
  
  
  
      ->run();
  
  }
  
  
  
  
  
  public function resolution(){
  
  
  
  $videos = $this->videos;    
  
  $movie_file = realpath($videos);
  
  // instancia a classe ffmpeg_movie para pegarmos as informações que queremos o vídeo
  
  $movie = new ffmpeg_movie($movie_file);
  
  // recebemos a altura do vídeo em pixels
  
  $height = $movie->getFrameHeight ();
  
  // recebemos a largura do vídeo em pixels
  
  $width = $movie->getFrameWidth ();
  
  $resolucao =  $width."x".$height;
  
  
  
  
  
  $q = new Query;
  
  $q  ->update('video')
  
      ->set(
  
          array(
  
             'resolucao'=>$resolucao
  
          )
  
      )
  
      ->where_equal_to(
  
                  array(
  
                          'id_video'=>$this->id_vid
  
                  )
  
          )
  
          ->limit(1)
  
  
  
      ->run();
  
  }
  
  
  
  final public function checar($a){
  
  
  
  $q = new Query;
  
  $q  ->update('video')
  
      ->set(
  
          array(
  
             'process'=>$a
  
          )
  
      )
  
      ->where_equal_to(
  
                  array(
  
                          'id_video'=>$this->id_vid
  
                  )
  
          )
  
          ->limit(1)
  
  
  
      ->run();
  
  
  
  }
  
  
  
  }
  
  
  
  $q=new Query;
  
  $q->select(
  
                  array(
  
                          'id_video',
  
                          'video',
  
                          'dir',
  
                          'screen',
  
                          'poster_id',
  
                          'resolucao',
  
                          'duration'
  
                  )
  
          )
  
          ->from('video')
  
  
  
  
  
  
  
          ->run();
  
  if($q){
  
          $users=$q->get_selected();
  
          foreach($users as $user){
  
           $c = new process;
  
  
  
           $c->videos = $user['video'];
  
           $c->target = $user['dir'];
  
           $c->id_vid = $user['id_video'];
  
  
  
          if(($user['screen'] == 'NULL') or ($user['duration'] == 'NULL') or ($user['resolucao'] == 'NULL')){
  
                  $c->checar(0);
  
  
  
                  if($user['screen'] == 'NULL'){      
  
                  $c->screen();
  
                  }
  
  
  
                  if($user['duration'] == 'NULL'){
  
                  $c->duration(); 
  
                  }
  
  
  
                  if($user['resolucao'] == 'NULL'){
  
                  $c->resolution();   
  
                  }
  
  
  
          }else{
  
  
  
          $c->checar(1);
  
  
  
          }
  
  
  
          }
  
  }
  
  else{
  
          echo 'Sorry, no users found.';
  
  }
  
  
  
  
  
  
  
  ?>

• Merge filename.mp4.tmp with filename.mp4

  10 janvier 2017, par Sathish

  How to merge a abc.mp4.tmp swap file with actual abc.mp4 file. I was trying to recording a live event using Wowza Media server 3.6 and the recorded file was not muxed properly at final moment. The abc.mp4.tmp swap file was not merged with actual abc.mp4 file. So could someone tell me how to merge the abc.mp4.tmp and abc.mp4 file and creates a new file and I can able to play with vlc

  Here is the mediainfo of the files

  [root@ip-ss-21-98-2 content]# mediainfo 03_03_2014_12_03_08.mp4
  
  General
  
  Complete name                            : 03_03_2014_12_03_08.mp4
  
  Format                                   : MPEG-4
  
  Format profile                           : Adobe Flash
  
  Codec ID                                 : f4v 
  
  File size                                : 5.20 GiB
  
  
  
  
  
  [root@ip-ss-21-98-2 content]# mediainfo 03_03_2014_12_03_08.mp4.tmp
  
  General
  
  Complete name                            : 03_03_2014_12_03_08.mp4.tmp
  
  File size                                : 38.3 MiB