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• ffmpeg erorr as "video4linux2 Dequeued v4l2 buffer contains corrupted data (0 bytes). " when captured image,in beaglebone black,

  12 février 2020, par Deepak Poul

  when i'm capturing a image using ffmpeg 4.2.1 in debian 9.5 of Beaglebone black its not showing this error as [video4linux2,v4l2 @ 0x2e0f1e0] Dequeued v4l2 buffer contains corrupted data (0 bytes). i used this command to capture image "ffmpeg -y -i /dev/video0 -ss 00:00:06 -vframes 1 image.jpg"

• is that possible to serv hls and dash mpeg both at a time

  12 février 2020, par Rahul M

  actually i'm a kind a newbie to the Nginx RTMP server. I had setup my nginx.conf file to accept both hls and dash-mpeg. but the now problem is at a once I can able to serve either of the hls or dash-mpeg. so now my question is that possible to serve both hls and dash-mpeg at the same time for two different videos? I'm streaming video from OBS Studio.
  here are my MPEG and hls code in nginx.conf file

  rtmp {
  server {
      listen 1935; # Listen on standard RTMP port
      chunk_size 4000;
  
      application show {
          live on;
          # Turn on HLS
          hls on;
          hls_path /nginx/hls/;
          hls_fragment 3;
          hls_playlist_length 60;
          deny play all;
      }
      application dash {
              live on;
              dash on;
              dash_path /nginx/dash;
  
      }
  }
  

  }

  thank you advance.

• PHP-FFMPeg Converts Video Twice

  12 février 2020, par 127-0-0-1

  I'm using FFMpeg's library for PHP (see https://github.com/PHP-FFMpeg/PHP-FFMpeg). After starting the convert process, the converted video's file size gradually increases (I constantly refresh the folder) and after converting finishes, the file size becomes 0 again and converting starts again. So converting is done twice, I could not understand if it is normal or there is something wrong.

  My converting code is:

  require 'vendor/autoload.php';
  $ffmpeg = FFMpeg\FFMpeg::create([
          'ffmpeg.binaries'  => 'C:/ffmpeg/ffmpeg.exe', 
          'ffprobe.binaries' => 'C:/ffmpeg/ffprobe.exe',
          'timeout'          => 0 
      ]);
  
  $video = $ffmpeg->open($fileName);
  $video
      ->filters()
      ->resize(new FFMpeg\Coordinate\Dimension(1920, 1080 ))
      ->synchronize();
  
  $format = new FFMpeg\Format\Video\X264('libmp3lame');
  
  try {
      $video->save($format, $outFileName);
  } catch (Exception $e) {
      echo $e->getMessage();
  }
  

• how do surface blur to a video using FFMPEG common line ?

  12 février 2020, par zuiluo

  

  like above two image , it is one frame of the video ，

  origin video:https://youtu.be/Qmoc7VyX2f8

  surface blur video:https://youtu.be/zbw1XVXjn4c

  Is there a way to use FFMPEG common line do that , thank you very much

• Combine two ffmpeg commands (segment and still photo)

  11 février 2020, par Brbcod1

  is it possible to combine this command

  ffmpeg -i video.mp4 -map 0:s:0? -c copy -movflags empty_moov+default_base_moof+frag_keyframe -f segment output%03d.mp4
  

  with a command that can take a still from the first segment

  ffmpeg -ss 00:00:00.00 -i output001.mp4 -vframes 1 -q:v 2 still.jpg"