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• Create an image in PHP and turn it into a 10-second video [on hold]

  17 septembre 2019, par Emil A.

  I remember being able to create an image in PHP with custom text and background etc, then output it (or save) as a JPG/PNG etc. I want to do this but output this 1 frame as a 10-second MP4-video. How can I achieve this ?

  (Note : The end-result will show an unique and dynamical URL for cases where someone tries to watch the video without permission ; think hotlink-prevention for video.)

• Ffmpeg integration without cmd ?

  27 août 2019, par forza1010

  I don’t want to use ffmpeg in command prompt. I want to integrate it into my code. So when I use my phone, to watch streams, it is to much time, to use some command line solutions. The live broadcast must be edited, befor the user reach it. Someone told me, that I should use ffmpeg as dll, but I dont know. What are my options ?

• Launch Symfony 4 command from controller works on dev but not in prod environment

  14 août 2019, par JoakDA

  When an application loads, I make 2 AJAX request to start 2 proccess needed for showing a RTSP video streaming on the website.

  It is working great in DEV environment but making some tests in PROD, it only works if the page is loaded on the server webbrowser (same host where the application is installed).

  If I use an external browser installed on another machine, it doesn’t launch the video.

  If I use an external browser installed on another machine, it doesn’t launch the video.

   /**
  
   * Start transcoding video.
  
   * @param Request $request
  
   * @return Response
  
   * @Route("devices/show/videotranscoding", name="start_video_transcoding", methods={"POST"})
  
   * @IsGranted("ROLE_OPERATOR")
  
   */
  
  public function startTranscodingVideo(Request $request)
  
  {
  
      $value = '';
  
      try {
  
          //Setup needed variables
  
          $this->initialize();
  
  
  
          $this->logger->info('Start Video transcoding: Ok. Video started successfully');
  
  
  
          //Get device id from POST data
  
          $deviceid = $request->request->get('deviceid');
  
  
  
          //Find device to show from system
  
          $deviceToShow = $this->repository->find($deviceid);
  
  
  
          if ($deviceToShow) {
  
              $this->logger->info('Start Video transcoding: . Device has been found. Delete it... Data: ' . $deviceToShow->__toString());
  
  
  
              $realHost = $this->getRealHost($_SERVER['HTTP_HOST']);
  
  
  
              $tcpHost = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://{$realHost}";
  
  
  
              //Launch transcoding command
  
              $transcodingCommand = 'php ' . $this->getParameter('kernel.project_dir') . '/bin/console device:videotranscoding ' .
  
                  'rtsp://' . $deviceToShow->getUsername() . ':' . $deviceToShow->getPassword() . '@' . str_replace('http://', '', $deviceToShow->getHost()) . ':' . $deviceToShow->getRTSPPort() . ' ' .
  
                  str_replace(' ', '', $deviceToShow->getName()) . ' ' . $tcpHost . ' ' . $deviceToShow->getVideoHTTPPort();
  
  
  
              $transcodingProcess = \Symfony\Component\Process\Process::fromShellCommandline($transcodingCommand);
  
  
  
              $transcodingProcess->start();
  
  
  
              $success = true;
  
              $message = '';
  
  
  
          } else {
  
              $message = $this->translator->trans('Device with identifier %deviceid% was not found.',
  
                  ['%deviceid%' => $deviceid]);
  
              $success = false;
  
  
  
              $this->addFlash('error', $message);
  
  
  
              $this->logger->error('Start Video transcoding: Ko. Device with identifier ' . $deviceid . ' was not found.');
  
          }
  
      } catch (Throwable $exception) {
  
          $message = $this->translator->trans('Error while executing action. Error detail: %detail%.',
  
              ['%detail%' => $exception->getMessage()]);
  
  
  
          $this->addFlash(
  
              'error', $message
  
          );
  
          $success = false;
  
  
  
          $this->logger->critical('Start Video transcoding: Ko. Exception catched. Error detail: ' . $exception->getMessage());
  
      }
  
  
  
      $this->logger->info('Start Video transcoding: Ok. Video started successfully');
  
  
  
      return new JsonResponse(array(
  
          'success' => $success,
  
          'message' => $message,
  
          'value' => $value
  
      ));
  
  }

  I have a nodejs script executing in background to listen o a specific port to broadcast the data on the TCP port to a websocket server.

  The ffmpeg command transcodes the RTSP stream and sent to port TCP 8102 and broadcast the data to a websocket server listening on port 8105.

  The transcoding command code :

   /**
  
   * @param InputInterface $input
  
   * @param OutputInterface $output
  
   * @return int|void|null
  
   * @throws \Exception
  
   */
  
  protected function execute(InputInterface $input, OutputInterface $output)
  
  {
  
      try {
  
          $this->logger->info('Start video transcoding: Setup video transcoding...');
  
          $io = new SymfonyStyle($input, $output);
  
          $now = new \DateTime();
  
          $io->title('Start video transcoding at ' . $now->format('d-m-Y G:i:s') . '...');
  
  
  
          //Get input parameters
  
          $rtspUri = $input->getArgument('rtsp');
  
          $secret = $input->getArgument('secret');
  
          $portsString = $input->getArgument('tcp_port');
  
          $tcpHost = $input->getArgument('tcp_host');
  
  
  
          $this->logger->debug('Start video transcoding: RTSP: "' . $rtspUri . '". TCP Port: ' . $portsString);
  
  
  
          //Absolute path to logs
  
          $logPath = $this->path . DIRECTORY_SEPARATOR . 'var' . DIRECTORY_SEPARATOR . 'log';
  
          $stdOutPath = $logPath . DIRECTORY_SEPARATOR . 'transcoding_out.log';
  
          $stdErrrorPath = $logPath . DIRECTORY_SEPARATOR . 'transcoding_error.log';
  
  
  
          //FFMPEG
  
          $arguments = '-nostdin -t 00:01:00 -rtsp_transport tcp -i ' . $rtspUri . ' -f mpegts -codec:v mpeg1video -s 1920x1080 -b:v 800k -r 30 -bf 0 ' . $tcpHost . ':' . $portsString . '/' . $secret . ' > '
  
          . $stdOutPath . ' 2> ' . $stdErrrorPath . ' &';
  
          $ffmpegParams = '/usr/bin/ffmpeg ' . $arguments;
  
          //$ffmpegProcess = new Process($ffmpegParams);
  
          $ffmpegProcess = \Symfony\Component\Process\Process::fromShellCommandline($ffmpegParams);
  
          $ffmpegProcess->setTimeout(60);
  
          $ffmpegProcess->setIdleTimeout(60);
  
  
  
          try {
  
              $ffmpegProcess->start();
  
  
  
              $this->logger->info('Start video transcoding: OK. Video streaming successfully started...');
  
              $io->success('Start video transcoding: OK. Video streaming successfully started...');
  
          }catch (ProcessTimedOutException $timedOutException){
  
              $ffmpegProcess->stop(3, SIGINT);
  
              $this->io->success('Start video transcoding: Ko. Transcoding finished with error.');
  
          }
  
      } catch (Throwable $exception) {
  
          $message = 'Start video transcoding: Ko. Exception catched. Error detail: ' . $exception->getMessage();
  
          $this->logger->critical($message);
  
          $io->error($message);
  
      }
  
  }

  The node.js code (got from here JSMpeg – MPEG1 Video & MP2 Audio Decoder in JavaScript :

  // Use the websocket-relay to serve a raw MPEG-TS over WebSockets. You can use
  
  // ffmpeg to feed the relay. ffmpeg -> websocket-relay -> browser
  
  // Example:
  
  // node websocket-relay yoursecret 8081 8082
  
  // ffmpeg -i <some input="input"> -f mpegts http://localhost:8081/yoursecret
  
  
  
  var fs = require('fs'),
  
      http = require('http'),
  
      WebSocket = require('ws');
  
  
  
  if (process.argv.length &lt; 3) {
  
      console.log(
  
          'Usage: \n' +
  
          'node websocket-relay.js <secret> [ ]'
  
      );
  
  
  
      console.log(process.cwd());
  
  
  
      process.exit();
  
  }
  
  
  
  var STREAM_SECRET = process.argv[2],
  
      STREAM_PORT = process.argv[3] || 8081,
  
      WEBSOCKET_PORT = process.argv[4] || 8082,
  
      RECORD_STREAM = false;
  
  
  
  // Websocket Server
  
  var socketServer = new WebSocket.Server({port: WEBSOCKET_PORT, perMessageDeflate: false});
  
  socketServer.connectionCount = 0;
  
  socketServer.on('connection', function(socket, upgradeReq) {
  
      socketServer.connectionCount++;
  
      console.log(
  
          'New WebSocket Connection: ',
  
          (upgradeReq || socket.upgradeReq).socket.remoteAddress,
  
          (upgradeReq || socket.upgradeReq).headers['user-agent'],
  
          '('+socketServer.connectionCount+' total)'
  
      );
  
      socket.on('close', function(code, message){
  
          socketServer.connectionCount--;
  
          console.log(
  
              'Disconnected WebSocket ('+socketServer.connectionCount+' total)'
  
          );
  
      });
  
  });
  
  socketServer.broadcast = function(data) {
  
      socketServer.clients.forEach(function each(client) {
  
          if (client.readyState === WebSocket.OPEN) {
  
              client.send(data);
  
          }
  
      });
  
  };
  
  
  
  // HTTP Server to accept incomming MPEG-TS Stream from ffmpeg
  
  var streamServer = http.createServer( function(request, response) {
  
      var params = request.url.substr(1).split('/');
  
  
  
      if (params[0] !== STREAM_SECRET) {
  
          console.log(
  
              'Failed Stream Connection: '+ request.socket.remoteAddress + ':' +
  
              request.socket.remotePort + ' - wrong secret.'
  
          );
  
          response.end();
  
      }
  
  
  
      response.connection.setTimeout(0);
  
      console.log(
  
          'Stream Connected: ' +
  
          request.socket.remoteAddress + ':' +
  
          request.socket.remotePort
  
      );
  
      request.on('data', function(data){
  
          socketServer.broadcast(data);
  
          if (request.socket.recording) {
  
              request.socket.recording.write(data);
  
          }
  
      });
  
      request.on('end',function(){
  
          console.log('close');
  
          if (request.socket.recording) {
  
              request.socket.recording.close();
  
          }
  
      });
  
  
  
      // Record the stream to a local file?
  
      if (RECORD_STREAM) {
  
          var path = 'recordings/' + Date.now() + '.ts';
  
          request.socket.recording = fs.createWriteStream(path);
  
      }
  
  }).listen(STREAM_PORT);
  
  
  
  console.log('Listening for incomming MPEG-TS Stream on http://127.0.0.1:'+STREAM_PORT+'/<secret>');
  
  console.log('Awaiting WebSocket connections on ws://127.0.0.1:'+WEBSOCKET_PORT+'/');
  
  </secret></secret></some>

  I am using PHP 7.3 and Symfony 4.3

  I am able to get a successfully response from the controller but I can’t watch the video streaming on an external computer.

  UPDATED : I don’t know if it may be related to the issue, but when I switch to DEV and then switch again to PROD using :

  composer dump-env prod

  If I try to clear the cache with :

  php bin/console cache:clear

  It appears :

  joaquin@dev-computer:/var/www/example.com/html$ composer dump-env prod
  
  Successfully dumped .env files in .env.local.php
  
  joaquin@dev-computer:/var/www/example.com/html$ php bin/console cache:clear
  
  09:15:07 ERROR     [console] Error thrown while running command "cache:clear". Message: "Failed to remove file "/var/www/example.com/html/var/cache/pro~/pools/WBCr1hDG8d/-/R/iW4Vq0vqfrjVsp2Gihwg": unlink(/var/www/example.com/html/var/cache/pro~/pools/WBCr1hDG8d/-/R/iW4Vq0vqfrjVsp2Gihwg): Permission denied." ["exception" => Symfony\Component\Filesystem\Exception\IOException]8;;file:///var/www/example.com/html/vendor/symfony/filesystem/Exception/IOException.php\^]8;;\ { …},"command" => "cache:clear","message" => "Failed to remove file "/var/www/example.com/html/var/cache/pro~/pools/WBCr1hDG8d/-/R/iW4Vq0vqfrjVsp2Gihwg": unlink(/var/www/example.com/html/var/cache/pro~/pools/WBCr1hDG8d/-/R/iW4Vq0vqfrjVsp2Gihwg): Permission denied."]
  
  
  
  In Filesystem.php line 184:
  
  
  
    Failed to remove file "/var/www/example.com/html/var/cache/pro~/pools/WBCr1hDG8d/-/R/iW4Vq0vqfrjVsp2Gihwg": unlink(/va  
  
  r/www/example.com/html/var/cache/pro~/pools/WBCr1hDG8d/-/R/iW4Vq0vqfrjVsp2Gihwg): Permission denied.                    
  
  
  
  
  
  cache:clear [--no-warmup] [--no-optional-warmers] [-h|--help] [-q|--quiet] [-v|vv|vvv|--verbose] [-V|--version] [--ansi] [--no-ansi] [-n|--no-interaction] [-e|--env ENV] [--no-debug] [--] <command>
  
  </command>

  Thanks