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• How to identify users in video file when streaming video ? [on hold]

  24 octobre 2017, par blackjak231

  I’m trying to find a solution to "secure" online video courses on a video streaming platform. The goals are the following :

  • Prevent easy download of video - OK
  • Be able to identify which connected user downloaded the video if it happens - NOK

  The server will be a Debian machine running PHP 7 and the "encryption" of the video will be done "on the stream" for each user.

  ---

  My question is for the second point. I’m unable to find a good solution for it. Here is what i thought of so far and the downsides :

  1. Add a watermark with the user’s name/email with "ffmpeg" on the whole video (in a corner)
     • Can be blurred and therefore useless
  2. Add an invisible digital watermark (inside the video file) with a tool (which i have not found yet)
     • Screen can be recorded and the invisible digital watermark lost.
  3. Add a watermark with the user’s name/email on 2 or 3 specific frames of the video while streaming using "ffmpeg"
     • Best solution from my point of view but no technical solution found so far.

  ---

  Do you have any recommendations on how to do this or a completely different approach to the problem ?

  I’m open to any third party video tool such as Vimeo or any other available.

  Thank you in advance for your help ! :)

• Revision 110694 : Mise au point de la demo. Ca permet de se rendre compte que certains ...

  16 juin 2018, par eric@… — Log

  Mise au point de la demo.
  Ca permet de se rendre compte que certains YAML existant sont un peu permissifs (saisies input et email).

• file conversion every after 10 minutes cronjob

  29 novembre 2017, par Sim

  I have added a cron job to execute a script after every 10 minutes , the script checks if the any new file is uploaded to directory, if there is a new file then it converts the video file to a small size like i have given in the command ..

  Below is the code i have tried , everything is working , i tried adding the email functionality as well and it works, but not executing ffmpeg command

  $last = (int)file_get_contents('timestamp.txt');
  
  file_put_contents('timestamp.txt', time());
  
  $files = glob('videos/*.mp4');
  
  $files = array_filter($files, function($file) { 
  
      return filemtime($file) > $last; 
  
  });
  
  
  
  if ($files) {
  
      foreach ($files as $sfile) {
  
          $sfile = str_replace('videos/', '', $sfile);
  
          $video = 'videos/'.escapeshellcmd($sfile);
  
          $sixty = "videos/250/".escapeshellcmd($sfile);
  
          $cmdform = "ffmpeg -i $video -vf scale=250:140 $sixty";
  
          $do = `$cmdform`;
  
      }
  
  }

  One more thing is that it converts the files with static name like if i give "videos/1.mp4" then it works but does not work in foreach loop.

  and command to set cron job

  */10 * * * * wget http://mywebsite.com/coding.php

  Much thanks.