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• FFmpeg youtube stream get corrupted until restart

  19 février 2023, par unpwn

  I am streaming images from python to youtube using ffmpeg.
It's working fine with just one problem.
Sometimes the stream get somehow corrupted an the stream looks like this :

  


  Corrupted stream image

  


  Or you can see for yourself in the stream itself : https://www.youtube.com/watch?v=PG6NLtr0jjM (Scroll back to the beginning)

  


  Then I have to restart ffmpeg and its working fine. Sometimes an error occurs regarding the network and I have to automatically restart the stream. Then there is the possibility it is corrupted again.

  


  The parameters for ffmpeg are the following :

  


  cmd_out = ['ffmpeg',
       '-re',
       '-f', 'concat',
       '-i', os.path.join(BASE_DIR, 'music', 'music.txt').replace('\\', '/'),           
       '-r', '1',
       '-f', 'image2pipe',
       '-vcodec', 'png',
       '-r', '1',
       '-i', '-',
       '-c:v', 'libx264',
       '-c:a', 'copy',
       '-g', '4',
       '-f', 'flv',
       'rtmp://a.rtmp.youtube.com/live2/{}'.format(stream_key)]  


  


  I never had that problem testing it on windows. It just appears when I use my linux server.

  


  I am using ffmpeg version 3.2.18-0+deb9u1 and the generated images are fine, when I save them to a normal file.

  


  Does someone know how to fix it ? Or where the problem is comming from ?

  


  ---

  


  Solution : An old ffmpeg version was available while using docker. I solved the problem by using a static build from https://www.johnvansickle.com/ffmpeg/

  


  I used this to use it in docker :

  


  WORKDIR /app
ADD ./ffmpeg /app
RUN mv ffmpeg /usr/local/ffmpeg
RUN chmod +x /usr/local/ffmpeg


  


  Until now the error seems to be solved.

  


• ffmpeg progress percentage in php

  9 avril 2018, par Mr.ZZ

  ffmpeg.php

  $sCmd = "ffmpeg -i ".$image." -i ".$music." video.avi 1> progress.txt";
  
  $proc = popen($sCmd." 2>&1", "r");

  progress.php

  $content = @file_get_contents('progress.txt');
  
  if($content){
  
      preg_match("/Duration: (.*?), start:/", $content, $matches);
  
      $rawDuration = $matches[1];
  
      $ar = array_reverse(explode(":", $rawDuration));
  
      $duration = floatval($ar[0]);
  
      if (!empty($ar[1])) $duration += intval($ar[1]) * 60;
  
      if (!empty($ar[2])) $duration += intval($ar[2]) * 60 * 60;
  
      preg_match_all("/time=(.*?) bitrate/", $content, $matches);
  
      $rawTime = array_pop($matches);
  
      if (is_array($rawTime)){$rawTime = array_pop($rawTime);}
  
      $ar = array_reverse(explode(":", $rawTime));
  
      $time = floatval($ar[0]);
  
      if (!empty($ar[1])) $time += intval($ar[1]) * 60;
  
      if (!empty($ar[2])) $time += intval($ar[2]) * 60 * 60;
  
      $progress = round(($time/$duration) * 100);
  
      echo $progress;
  
  }

  progress.php final output was always 100, so it was easy with jquery to hide progress and show download button.

  BUT after changing ffmpeg.php with this command :

  $sCmd = "ffmpeg -loop 1 -r 1 -i ".$image." -i ".$music." -c:a copy -shortest video.avi 1> progress.txt";
  
  $proc = popen($sCmd." 2>&1", "r");

  progress.php output is different numbers above 100(thousands) and jquery can’t figure out ffmpeg process finished or not.

  How to get 100 when ffmpeg finishs working ? I think i need some changes in progress.php because final result in progress.txt is longer than before.

• Streaming audio with ffmpeg

  15 avril 2016, par Dmitry

  I use for streaming next command :

  start /min ffmpeg -re -i ..music.mp3 -vn  -f rtp rtp://197.100.15.9:29000?localport=40000

  I have next questions :

  1. How to make it stream in the endless loop ?
  2. How to make it send data in ptime=20 ? because it sending it randomly.
  3. Also, is it possible to use my own SDP file(from my filesystem) for
     streaming ?