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• Launch command from controller avoid loading page

  28 juin 2019, par JoakDA

  When I launch a command from a Symfony controller, the command is executed but the GET request does not finish.

  My command launchs a node.js script that receive rtsp frames transcoded from ffmpeg and broadcast it to a websocket.

  This is a Debian 9 server, running Symfony 4, PHP 7.3.5 and Apache2.

  This is my controller show action that calls the command :

      /**
  
       * Render view to show device details.
  
       * @param Request $request
  
       * @param $deviceid
  
       * @return Response
  
       * @Route("devices/show/{deviceid}", name="device_show", methods={"GET"})
  
       * @IsGranted("ROLE_OPERATOR")
  
       */
  
      public function showAction(Request $request, $deviceid)
  
      {
  
      try{
  
          //Find device to show from system
  
          $deviceToShow = $this->repository->find($deviceid);
  
  
  
          if ($deviceToShow) {
  
              $this->logger->debug('Show device: . Device has been found. Delete it... Data: ' . $deviceToShow->__toString());
  
  
  
              //Launch video streaming commands
  
              $command = new VideoServerCommand($this->entityManager, $this->logger, $this->getParameter('kernel.project_dir'));
  
              $input = new ArrayInput(array(
  
                  'secret' => str_replace(' ', '', $deviceToShow->getName()),
  
                  'http_port' => 8002,
  
                  'ws_port' => 8005
  
              ));
  
              $output = new BufferedOutput();
  
              $resultCode  = $command->run($input, $output);
  
  
  
              $content = $output->fetch();
  
  
  
              if ($resultCode === 0){
  
                  $this->logger->info('Call Video Server Command: Ok. Video Server started successfully. Console output: ' . $content);
  
              }else{
  
                  $this->logger->error('Call Video Server Command: Ko. Could not start video server. Console output: ' . $content);
  
              }
  
  
  
          }else{
  
              $message = $this->translator->trans('Device with identifier %deviceid% was not found.',
  
                  ['%deviceid%' => $deviceid]);
  
  
  
              $this->addFlash('error', $message);
  
  
  
              $this->logger->error('Show device: Ko. Device with identifier ' . $deviceid . ' was not found.');
  
          }
  
      }catch (Exception $exception) {
  
          $message = $this->translator->trans('Error while executing action. Error detail: %detail%.',
  
              ['%detail%' => $exception->getMessage()]);
  
  
  
          $this->addFlash(
  
              'error', $message
  
          );
  
  
  
          $this->logger->critical('Show device: Ko. Exception catched. Error detail: ' . $exception->getMessage());
  
      }
  
  
  
      $host = explode(':', $request->getUri());
  
  
  
      return $this->render('device/show.html.twig', array(
  
          'baseurl' => $host[1],
  
          'secret' => str_replace(' ', '', $deviceToShow->getName()),
  
          'device' => $deviceToShow,
  
      ));
  
      }

  And this is my command code that runs the node.js script

  protected function execute(InputInterface $input, OutputInterface $output)
  
      {
  
          try {
  
              $this->logger->info('Start web socket: Setup websocket server...');
  
              $this->io = new SymfonyStyle($input, $output);
  
              $now = new \DateTime();
  
              $this->io->title('Start websocket server ' . $now->format('d-m-Y G:i:s') . '...');
  
  
  
              //Get input parameters
  
              $secret = $input->getArgument('secret');
  
              $tcpPort = $input->getArgument('http_port');
  
              $wsPort = $input->getArgument('ws_port');
  
  
  
              $output->writeln([
  
                  'Video Server',// A line
  
                  '============',// Another line
  
                  'Starting Video Reception Socket...',// Empty line
  
              ]);
  
  
  
              //Call node websocket-relay.js
  
              $command = 'node ' . $this->path . '/assets/js/websocket-relay.js ' . $secret . ' ' . $tcpPort . ' ' . $wsPort;
  
              //Only want to execute for 60 seconds
  
              $nodeVideoRelay = new Process(exec($command));
  
              $nodeVideoRelay->setTimeout(60);
  
              $nodeVideoRelay->setIdleTimeout(60);
  
  
  
              try {
  
                  $nodeVideoRelay->run();
  
  
  
                  $this->logger->info('Start video streaming: OK. Video streaming successfully started...');
  
                  $this->io->success('Start video streaming: OK. Video streaming successfully started...');
  
                  $this->io->writeln($nodeVideoRelay->getOutput());
  
              } catch (ProcessTimedOutException $timedOutException) {
  
                  $nodeVideoRelay->stop(3, SIGINT);
  
                  $this->io->success('Start video streaming: Ok. Streaming finished.');
  
              }
  
              //}
  
          } catch (Exception $exception) {
  
              $this->logger->critical('Start video streaming: Ko. Exception catched. Error detail: ' . $exception->getMessage());
  
              $this->io->error('Start video streaming: Ko. Exception catched. Error detail: ' . $exception->getMessage());
  
          }
  
      }

  And the "websocket-relay.js" is an script got from https://github.com/phoboslab/jsmpeg/blob/master/websocket-relay.js

  The result is that the page is not loading. I have another command that process the RTSP stream using ffmpeg and send the date to a websocket.

  On the page that returns my controller action, it appears a canvas where the video will be rendered.

  I want to render the page as soon as possible and that the node.js script runs on background without blocking the main process.

  Thank you for helping me.

• Ffmpeg stream stops after a couple of seconds

  28 juin 2019, par Connor Woodford

  I have an http stream of an mkv file that I am trying to transcode to mp4 via ffmpeg. Here is the command I enter to start the stream ffmpeg -i "input.mkv" -f mpeg1video -vf "scale=640:480" -r 20 "http://localhost:port". The stream starts fine. Here is what the stream gives me at first :

  Metadata:
     title           : Chapter 17
   Stream #0:0(eng): Video: mpeg1video, yuv420p, 640x480 [SAR 4:3 DAR 16:9], q=2-31, 200 kb/s, 24 fps, 24 tbn, 24 tbc
   Metadata:
     BPS-eng         : 31632108
     DURATION-eng    : 02:03:42.289875000
     NUMBER_OF_FRAMES-eng: 177957
     NUMBER_OF_BYTES-eng: 29347831113
     SOURCE_ID-eng   : 001011
     _STATISTICS_WRITING_APP-eng: MakeMKV v1.14.2 win(x64-release)
     _STATISTICS_WRITING_DATE_UTC-eng: 2019-06-18 22:53:22
     _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID
     encoder         : Lavc58.31.102 mpeg1video
   Side data:
     cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
frame=  111 fps=0.0 q=6.2 size=     212kB time=00:00:04.54 bitrate= 382.2kbits/s speed=8.82x

  but after this shows up it hangs for a while then it gives me this :

  av_interleaved_write_frame(): Unknown errorime=00:00:05.24 bitrate= 788.3kbits/s speed=10.5x
  
  Error writing trailer of http://192.168.1.19:4012: Error number -10054 occurred
  
  frame=  128 fps=1.1 q=12.1 Lsize=     646kB time=00:00:05.84 bitrate= 905.0kbits/s speed=0.0487x
  
  video:343kB audio:274kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 4.639489%
  
  [http @ 000001cb1fdac780] URL read error:  -10054
  
  Conversion failed!

  Here is my http server in node.js :

  const express = require('express')
  
  const port = port
  
  var ffmpeg = require('ffmpeg');
  
  var http = require('http')
  
  
  
  var server = http.createServer(function(req, res) {
  
      res.writeHead(200, {'Content-Type': 'video/mp4'});
  
  })
  
  
  
  server.listen(port, 'ipAddress')
  
  console.log(`Example app on port ${port}!`);

• Ffmpeg http stream stops after a few seconds

  27 juin 2019, par pillarman38

  I have an http stream of an mkv file that I am trying to transcode to mp4 via ffmpeg. Here is the command I enter to start the stream ffmpeg -i "input.mkv" -f mpeg1video -vf "scale=640:480" -r 20 "http://localhost:port". The stream starts fine but it hangs for a while then it gives me this :

  av_interleaved_write_frame(): Unknown errorime=00:00:05.24 bitrate= 788.3kbits/s speed=10.5x
  
  Error writing trailer of http://192.168.1.19:4012: Error number -10054 occurred
  
  frame=  128 fps=1.1 q=12.1 Lsize=     646kB time=00:00:05.84 bitrate= 905.0kbits/s speed=0.0487x
  
  video:343kB audio:274kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 4.639489%
  
  [http @ 000001cb1fdac780] URL read error:  -10054
  
  Conversion failed!