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• Properly open audio files with libav/ffmpeg

  20 novembre 2013, par Hyndrix

  I am trying to decode audio samples from various file formats using ffmpeg. Therefore I have started some experimenting based on the code in this discussion : How to decode audio via FFmpeg in Android . I use the latest FFMPEG release (1.0) and compile it using https://github.com/halfninja/android-ffmpeg-x264

  AVFormatContext * pFormatCtx;
  
  
  
  avcodec_register_all();
  
  av_register_all();
  
  
  
  int lError;
  
  if ((lError = avformat_open_input(&pFormatCtx, filename, NULL, 0))
  
          != 0) {
  
      LOGE("Error open source file: %d", lError);
  
      return;
  
  }
  
  if ((lError = avformat_find_stream_info(pFormatCtx, 0)) < 0) {
  
      LOGE("Error find stream information: %d (Streams: %d)", lError, pFormatCtx->nb_streams);
  
      return;
  
  }
  
  LOGE("audio format: %s", pFormatCtx->iformat->name);
  
  LOGE("audio bitrate: %d", pFormatCtx->bit_rate);
  
  audioStreamIndex = av_find_best_stream(pFormatCtx, AVMEDIA_TYPE_AUDIO,
  
          -1, -1, &codec, 0);
  
  
  
  //if (audioStreamIndex < 0 || audioStreamIndex >= pFormatCtx->nb_streams)
  
  //  audioStreamIndex = 0;
  
  
  
  LOGE("Stream: %d (total: %d)", audioStreamIndex, pFormatCtx->nb_streams);
  
  LOGE("audio codec: %s", codec->name);

  FFMPEG is compiled using enable-decoder=mp1/mp2/mp3/ogg/vorbis/wav/aac/theora and without any external libraries (e.g. libmp3lame, libtheora, etc.)

  Opening of mp3 and wav files works without problems producing the following output for instance for mp3 :

  audio format : mp3

  audio bitrate : 256121

  stream : 0 (total : 1)

  audio codec : mp3

  But when I try to open an ogg file I get this :

  Error find stream information : -1 (Streams : 1)

  When I manually set audioStreamIndex=0 and comment out the return statement :

  Error find stream information : -1 (Streams : 1)

  audio format : mp3

  audio bitrate : 0

  stream : 0 (total : 1)

  audio codec : mp3

  For m4a (AAC) I get this :

  audio format : mp3

  audio bitrate : 288000

  stream : 0 (total : 1)

  audio codec : mp1

  but later it fails in avcodec_decode_audio3.

  I also tried to manually force a format without success :

  AVInputFormat *pForceFormat= av_find_input_format("ogg");
  
  if ((lError = avformat_open_input(&pFormatCtx, filename, pForceFormat, 0))
  
  // continue

  Is there something wrong with the loading code which makes it only work with mp3 and wav and fails for other formats ?

  Regards,

• PHP Run FFMPEG in background, and find out when it's done [closed]

  27 septembre 2012, par toms900

  Possible Duplicate :
  Run a ffmpeg process in the background

  I was wondering if there's any easy way to runn and ffmpeg process in the background so people can leave the page. And if you do that, then tell if the ffmpeg process is running, and when it's done, update the database to "finished". I'll post my code if I need to. Thanks !
  Here's the code on the processing page :

  <?php
  
  $name = $_FILES['upload_file']['name'];
  
  $type = $_FILES['upload_file']['type'];
  
  $size = $_FILES['upload_file']['size'];
  
  $tmpname = $_FILES['upload_file']['tmp_name'];
  
  
  
  if (!$title) {
  
      $title = $name;
  
  }
  
  
  
  if (!$description) {
  
      $description = "No description available.";
  
  }
  
  
  
  $string = substr(str_shuffle(str_repeat('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789',10)),0,10);
  
  $videoname = "$string.mp4";
  
  $date = date("F d, Y"); // October 09, 2010
  
  $srcFile = $tmpname;
  
  mkdir("users/$usercode/uploads/$string");
  
  mkdir("users/$usercode/uploads/$string/HD");
  
  mkdir("users/$usercode/uploads/$string/regular");
  
  mkdir("users/$usercode/uploads/$string/mobile_upload");
  
  mkdir("users/$usercode/uploads/$string/thumbnails");
  
  $destFile1 = "/users/$usercode/uploads/$string/HD/$string.mp4";
  
  $destFile2 = "/users/$usercode/uploads/$string/regular/$string.mp4";
  
  $destFile3 = "/users/$usercode/uploads/$string/mobile_upload/$string.mp4";
  
  $ffmpegPath = "/usr/local/bin/ffmpeg"; 
  
  $flvtool2Path = "/usr/bin/flvtool2";
  
  $yamdiPath = "/usr/bin/yamdi";
  
  $mp4boxPath = "/usr/local/bin/MP4Box";
  
  // Create our FFMPEG-PHP class 
  
  $ffmpegObj = new ffmpeg_movie($srcFile); 
  
  // Save our needed variables 
  
  $srcWidth = $ffmpegObj->getFrameWidth(); 
  
  $srcHeight = $ffmpegObj->getFrameHeight(); 
  
  $srcFPS = $ffmpegObj->getFrameRate(); 
  
  $srcAB = $ffmpegObj->getAudioBitRate();  
  
  $srcAR = $ffmpegObj->getAudioSampleRate(); 
  
  $res = $srcWidth . "x" . $srcHeight; 
  
  // Call our convert using exec() 
  
  $iphone1 = getcwd().$destFile1;
  
  $iphone2 = getcwd().$destFile2;
  
  $iphone3 = getcwd().$destFile3;
  
  $low = "854x480";
  
  $local_img = "/users/$usercode/uploads/$string/thumbnails/$string.jpg";
  
  $img = getcwd().$local_img;
  
  $img = preg_replace('/ /','\ ',$img); 
  
  $thumb = "$string.jpg"; 
  
  $cmd = "$ffmpegPath -i $tmpname 2>&1";  
  
  if (preg_match('/Duration: ((\d+):(\d+):(\d+))/s', `$cmd`, $time)) {  
  
      $total = ($time[2] * 3600) + ($time[3] * 60) + $time[4];  
  
      $interval = rand(0, $total);  
  
  }  
  
  
  
  $img = shell_exec("$ffmpegPath -ss $interval -i $tmpname 2>&1 -s 120x90 -f mjpeg -vframes 1 $img");
  
  
  
  
  
  if ($srcWidth >= 1280 && $srcHeight >= 720) {
  
      $out1 = shell_exec("$ffmpegPath -i $tmpname -f mp4 -vcodec libx264 -vpre normal -ab $srcAB -ar $srcAR -b 5000k -r $srcFPS -s $res -acodec libfaac $iphone1");
  
      $out2 = shell_exec("$mp4boxPath -inter 0.5 $iphone1");
  
      $out3 = shell_exec("$ffmpegPath -i $tmpname -f mp4 -vcodec libx264 -vpre normal -ab $srcAB -ar $srcAR -b 2000k -r $srcFPS -s $low -acodec libfaac $iphone2");
  
      $out4 = shell_exec("$mp4boxPath -inter 0.5 $iphone2");
  
      $out5 = shell_exec("$ffmpegPath -i $tmpname -f mp4 -vcodec libx264 -vpre slow -ab 64k -ar 44100 -b 500k -r 30 -s $low -acodec libfaac $iphone3");
  
      $out6 = shell_exec("$mp4boxPath -inter 0.5 $iphone3");
  
      echo 1;
  
  }
  
  else {
  
      $out3 = shell_exec("$ffmpegPath -i $tmpname -f mp4 -vcodec libx264 -vpre normal -ab 64k -ar 44100 -b 500k -r 30 -s $low -acodec libfaac $iphone2");
  
      $out4 = shell_exec("$mp4boxPath -inter 0.5 $iphone2");
  
      $out5 = shell_exec("$ffmpegPath -i $tmpname -f mp4 -vcodec libx264 -vpre slow -ab 64k -ar 44100 -b 500k -r 30 -s $low -acodec libfaac $iphone3");
  
      $out6 = shell_exec("$mp4boxPath -inter 0.5 $iphone3");          
  
      echo 1;
  
  }
  
  function generate_random($number_of_characters)
  
  {
  
          $characters = array();
  
          $randomchar = "";
  
          $x = 0;
  
          for($i = 48; $i < 123; $i++)
  
          {
  
                  if(ctype_alnum(chr($i)))
  
                  {
  
                          $characters[$x] = chr($i);
  
                          $x++;
  
                  }
  
          }
  
          for($i = 0; $i < $number_of_characters; $i++)
  
          {
  
                  $randomchar .= $characters[rand(0, count($characters) - 1)];
  
          }
  
          return $randomchar;
  
  }
  
  ?>

• Anomalie #3234 : Upload gros fichiers

  24 juin 2014, par Pierre Miquel

  Je viens de tester et effectivement ça marche bien.
  J’ai juste modifié les lignes suivantes
  

  // on est en hors quota donc erreur
       echo '

  Erreur de chargement :
  
  le poids total des fichiers d&eacute ;passe la limite autoris&eacute ;e (’.ini_get(’post_max_size’).
  ’o).
  Pour recommencer, veuillez recharger cette page.

  ’ ;
  exit() ;