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• exec function not working as expected

  6 mars 2016, par Albert

  I am running a shell function from php to convert a video file to flash once it is uploaded. The exec function is like this :

  exec("ffmpeg -i " . WWW_ROOT . "files" . DS . "videos" . DS . $id . $ext . " -ar 22050 -r 32 -f flv -s 640x480 " . WWW_ROOT . "files" . DS . "videos" . DS . $id . ".flv");
  
  
  
  // if I echo the string it returns:
  
  // ffmpeg -i /home/vceroot/public_html/example.com/test/intraweb/app/webroot/files/videos/516c1203-0484-417a-b047-5488c40293e9.mpg -ar 22050 -r 32 -f flv -s 640x480 /home/vceroot/public_html/example.com/test/intraweb/app/webroot/files/videos/516c1203-0484-417a-b047-5488c40293e9.flv
  
  // the locations are correct

  However, it does not convert the video.

  After it uploaded the file, it just goes back to the index action. There is no converted file although the uploaded file is there.

  My permissions on the folder is 755. And the folder owner is apache. I don’t know what else to do. Can anyone assist me ?

  UPDATE

  So I’ve changed my exec query a bit and echoed the output :

  exec("ffmpeg -i " . WWW_ROOT . "files" . DS . "videos" . DS . $id . $ext . " -ar 22050 -r 32 -f flv -s 640x480 " . WWW_ROOT . "files" . DS . "videos" . DS . $id . ".flv 2>&1", $output, $return);
  
  die(print_r($output));

  This returned the following error :

  Array ( [0] => sh: ffmpeg: command not found ) 1

  So I changed it a bit to this :

  exec("/usr/local/bin/ffmpeg -i " . WWW_ROOT . "files" . DS . "videos" . DS . $id . $ext . " -ar 22050 -r 32 -f flv -s 640x480 " . WWW_ROOT . "files" . DS . "videos" . DS . $id . ".flv 2>&1", $output, $return);
  
  die(print_r($output));

  And now it returns :

  Array ( [0] => /usr/local/bin/ffmpeg: error while loading shared libraries: libavdevice.so.55: cannot open shared object file: No such file or directory ) 1

  Where do I go from here ?

• Node.JS : FFmpeg piped video encoding no thumbnail created

  12 avril 2013, par Sascha Heim

  I want to pipe the video during upload to ffmpeg for realtime thumbnail creation.
  All went fine but no thumbnail.jpg was created and the ffmpeg stderr hangs after the libraries version display.

  Updated : Ive updated my code but it also doesnt create a valid thumbnail.

  var formidable = require('formidable'),
  
          http = require('http'),
  
          sys = require('sys'),
  
          spawn = require('child_process').spawn;
  
  
  
  function spawnFfmpeg(exitCallback) {
  
      var args = ['-i', 'pipe:0', '-c:v', 'mjpeg', '-ss', '00:00:13', '-vframes', '1', '-s', '100x80', 'thumbnail.jpg']
  
      var ffmpeg = spawn('ffmpeg', args);
  
      console.log('Spawning ffmpeg ' + args.join(' '));
  
  
  
      ffmpeg.on('exit', exitCallback);
  
      ffmpeg.stderr.on('data', function(data) {
  
          console.log('grep stderr: ' + data);
  
      });
  
      return ffmpeg;
  
  }
  
  
  
  http.createServer(function(req, res) {
  
      if (req.url == '/' && req.method.toLowerCase() == 'get') {
  
          // show a file upload form
  
          res.writeHead(200, {'content-type': 'text/html'});
  
          res.end
  
                  (&#39;<form action="/upload" enctype="multipart/form-data" method="post">&#39;
  
                          + &#39;<input type="text" /><br />&#39;
  
                          + &#39;<input type="file" multiple="multiple" /><br />&#39;
  
                          + &#39;<input type="submit" value="Upload" />&#39;
  
                          + &#39;</form>&#39;
  
                          );
  
      } else if (req.url == &#39;/upload&#39; &amp;&amp; req.method.toLowerCase() == &#39;post&#39;) {
  
          // parse a file upload
  
          var form = new formidable.IncomingForm();
  
          form.maxFieldsSize = 29 * 1024 * 1024;
  
          // Handle each part of the multi-part post
  
          var ffmpeg = spawnFfmpeg(function(code) {
  
              console.log(&#39;child process exited with code &#39; + code);
  
              res.end();
  
          });
  
  
  
          var form = new formidable.IncomingForm();
  
          // Handle each part of the multi-part post
  
          form.onPart = function(part) {
  
              // Handle each data chunk as data streams in
  
              part.addListener(&#39;data&#39;, function(data) {
  
                  ffmpeg.stdout.pipe(res);
  
                  res.pipe(ffmpeg.stdin);
  
                  // Write each chunk to disk
  
                  //savedFile.write(data);
  
              });
  
          };
  
  
  
          // Do it
  
          form.parse(req);
  
          return;
  
      }
  
  }).listen(80, "127.0.0.1");
  
  
  
  process.on(&#39;uncaughtException&#39;, function(err) {
  
  });

• Revision 71707 : Coup de phpdoc et de petit refactoring Un oubli du @package dans la ...

  6 avril 2013, par kent1@… — Log

  Coup de phpdoc et de petit refactoring
  Un oubli du @package dans la première action