Recherche avancée

Sur d’autres sites (6657)

• adjust volume just for 1 loop with ffmpeg

  6 juillet 2020, par alde

  What i've achieved so far is looping bgAudio and delay the mainAudio for 5 sec. But, there is issue when the bgAudio start to loop then its volume start again from 7.0, not from 0.9.

  


  ffmpeg version = 3.0.1

  


  "-i", mainAudio, "-filter_complex",
"amovie=bgAudio:loop=999,volume=enable='between(t,0,5):volume=7.0',volume=enable=" +
"'between(t,5.01,0):volume=0.9'[s] ;[0:0]adelay=5000|5000," +
"volume=6.0[a] ;[a][s]amix=inputs=2:duration=first", "-ss", "0",
"-c:a", "aac", audioPath

  


• PHP-FFMPEG Error FFMpeg\Exception\RuntimeException

  27 avril 2016, par JJ The Second

  I have installed FFMPEG on a Ubuntu 14.04 server which works fine. I have also installed all dependencies/libraries successfully and don’t have any problem transcoding using linux command lines. My user/group can now process SUDO command so there isn’t any issue there. So I started experimenting with a PHP library called PHP-FFMPEG (Please click here to view this library on github) and have installed is using composer in my vendor folder. Please note, I’m using CodeIgniter 3 as PHP library and my composer has installed all dependencies in vendor folder.

  In my welcome controller that comes with CodeIgniter, this is how I’m calling FFMPEG

   public function __construct()
  
  {
  
      parent::__construct();
  
      // include_once('/var/www/vhosts/domain.com/streaming.domain.com/application/libraries/FFMpeg/FFMpeg.php');
  
      include('/var/www/vhosts/domain.com/streaming.domain.com/vendor/autoload.php');
  
  
  
  }

  and this is my controller

  public function preset_one()
  
  
  
      {
  
  
  
  
  
      $ffmpeg = FFMpeg\FFMpeg::create([
  
              'ffmpeg.binaries'  => '/bin/ffmpeg', // the path to the FFMpeg binary
  
              'ffprobe.binaries' => '/bin/ffprobe', // the path to the FFProbe binary
  
              'timeout'          => 0,
  
          ]);        
  
  
  
  
  
      $video = $ffmpeg->open('./media/video.mp4');
  
      $format = new FFMpeg\Format\Video\X264();
  
      $format->on('progress', function ($video, $format, $percentage) {
  
          echo "$percentage % transcoded";
  
      });
  
  
  
      $format
  
          -> setKiloBitrate(1000)
  
          -> setAudioChannels(2)
  
          -> setAudioKiloBitrate(256);
  
  
  
      $video
  
      ->save($format, './media/video.avi');
  
  
  
      }

  My media folder has 0777 permission for files and subdirectories but when I run this controller this is what I get

  An uncaught Exception was encountered
  
  
  
  Type: FFMpeg\Exception\RuntimeException
  
  
  
  Message: Encoding failed
  
  
  
  Filename: /var/www/vhosts/domain.com/streaming.domain.com/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Media/Video.php
  
  
  
  Line Number: 168
  
  
  
  Backtrace:
  
  
  
  File: /var/www/vhosts/domain.com/streaming.domain.com/application/controllers/Welcome.php
  
  Line: 124
  
  Function: save
  
  
  
  File: /var/www/vhosts/domain.com/streaming.domain.com/index.php
  
  Line: 315
  
  Function: require_once

  I’ve done everything to make it work, tried different file formats, small files and even 2GB files. I’ve also set timeout to 0 but still getting this error. What else I did was I looked at Line 168 in /var/www/vhosts/domain.com/streaming.domain.com/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Media/Video.php and it seems FFMPEG creates temp folders during transcoding process and there are some threads that I don’t understand.

  Has anyone experienced same issue ? Would you please educate me understanding what’s happening and why this is not functioning as it should ? Thank you all

• Create FFMPEG process that keeps transcoding in Ruby

  6 juillet 2016, par stiller_leser

  I am looking for a way to start a FFMPEG process to transcode a file, that gets appended every two seconds. Basically the file is created once (create-route), the ffmpeg process should be started, over the update-route the file gets updated and once it is not needed anymore (Destroy-route), it will be killed and the file be deleted.
  Currently I am usin Open3 with the following approach :

    Open3.popen3("ffmpeg", ffmpeg_args) { |stdin, stdout, stderr|
  
      puts stderr.read
  
    }

  However this does not seem to be the correct approach. Is there a better way to create a process and stop it later ? Also how could this be achieved without a temporary file, but a pipe instead ? The issue here is that the file arrives in chunks every two seconds.