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• FFMPEG get a video duration and create a thumbnail

  14 mars 2018, par M.Izzat

  Currently this is what I use to convert a video into image from python :

  def video_conversion(raw_file):
  
      duration = "ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 input.mp4"
  
      thumbnail_cmd = "ffmpeg -ss 10 -i input.mp4 -vframes 1 output.jpg"
  
      subprocess.call(duration)
  
      return output

  but this will create and Image for every 30 sec of the video duration, what I want is get the video total duration and create athumbnail exactly in the middle of the duration

  e.g : if the video duration is 60 second, create a thumbnail on the 30th second

• ffmpeg-php to create thumbnail of video

  8 novembre 2014, par Wazzzy

  I am trying to use this script to create thumbnail of a video using ffmpeg. At first I used phpinfo(); and I found ffmpeg is installed on my server.

  Then I copied ffmpeg-php onto my server and run the test file

  I got to know that many function are working on my server

  I got output like this

  Output :-

  Functions available in /usr/lib/php/extensions/no-debug-non-zts-20060613/ffmpeg.so extension:
  
  
  
  Methods available in class ffmpeg_movie:
  
  __construct
  
  getduration
  
  getframecount
  
  getframerate
  
  getfilename
  
  getcomment
  
  gettitle
  
  getauthor
  
  getartist
  
  getcopyright
  
  getalbum
  
  getgenre
  
  getyear
  
  gettracknumber
  
  getframewidth
  
  getframeheight
  
  getframenumber
  
  getpixelformat
  
  getbitrate
  
  hasaudio
  
  hasvideo
  
  getnextkeyframe
  
  getframe
  
  getvideocodec
  
  getaudiocodec
  
  getvideostreamid
  
  getaudiostreamid
  
  getaudiochannels
  
  getaudiosamplerate
  
  getaudiobitrate
  
  getvideobitrate
  
  getpixelaspectratio
  
  getpixelaspectratio
  
  getvideobitrate
  
  getaudiobitrate
  
  getaudiosamplerate
  
  getaudiochannels
  
  getaudiostreamid
  
  getvideostreamid
  
  getaudiocodec
  
  getvideocodec
  
  getframe
  
  getnextkeyframe
  
  hasvideo
  
  hasaudio
  
  getbitrate
  
  getpixelformat
  
  getframenumber
  
  getframeheight
  
  getframewidth
  
  gettracknumber
  
  getyear
  
  getgenre
  
  getalbum
  
  getcopyright
  
  getartist
  
  getauthor
  
  gettitle
  
  getcomment
  
  getfilename
  
  getframerate
  
  getframecount
  
  getduration
  
  __construct

  I wrote this code and tried any possible path to assign $ffmpeg;

  <?php
  
  
  
      $thumb_stdout;
  
      $retval=0;
  
      $ffmpeg = '/home/lib/ffmpeg';
  
  
  
  // change "demo.mpg" to your mpg file name!
  
  $video  = dirname(__FILE__) . 'demo.mpg';
  
  
  
  // change "demo.jpg" to whichever name you like or don't
  
  // for this example, the name of the output jpg file does not matter
  
  $image  = dirname(__FILE__) . 'demo.jpg';
  
  
  
  $second = 1;
  
  
  
  $cmd = "$ffmpeg -i $video 2>&1";
  
  if (preg_match('/Duration: ((\d+):(\d+):(\d+))/s', '$cmd', $time)) {
  
      $total = ($time[2] * 3600) + ($time[3] * 60) + $time[4];
  
      $second = rand(1, ($total - 1));
  
  }
  
  
  
  //$cmd = "$ffmpeg -i $video -deinterlace -an -ss $second -t 00:00:01 -r 1 -y -vcodec mjpeg -f mjpeg $image 2>&1";
  
  $cmd = "$ffmpeg -i $video -r 1 -ss 00:00:05 -t 00:00:01 -s 250x250 -f image2 $image";
  
  echo $cmd;
  
  exec($cmd);
  
  //$return = '$cmd';
  
  
  
  echo '<br />done!';
  
  ?>

• FFmpeg youtube livestreaming [closed]

  23 janvier 2024, par T1WT

  I'm developing a project for streaming on YouTube. I use Python + ffpeg in the code. I haven’t been able to fix the problem for a month now - after a while (from 6 to 20 hours) buffering begins. In the command I use -c copy. But after this time, I came to the conclusion that most likely the buffering (namely, the stream gradually drops from speed x1 to speed x0.9 and below) is due to the disk. My server has SATA. Moreover, the problem is that the disk reaches 100% active time. And around this time the flow speed begins to drop. Moreover, the total read/write speed is only 20MB/sec. How to fix it ? Thanks for your help, I really can't stand it anymore.

  


  I’ll say right away that the potential of the project is great, now there are only 50 streams on YouTube, but then there may be more than 10,000.

  


  I tried a lot but settled on the SATA drive and