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• ffmpeg : Make output file duration that of the file with the longest length [closed]

  27 février 2024, par losercantcode

  I'm going crazy trying to figure this out.

  


  Essentially I'm trying to apply sidechain compression using ffmpeg (for the sake of speed and automation). a2.mp3 in this example is the full length track and a1.wav is a short 5 second, spoken-word clip. The code currently applies the sidechain compression well, but the output file is only that of the spoken-word clips length, so 5 seconds. Is it at all possible to make the output match that of a2.mp3's length instead ? Switching around the input order is not something that's possible as it'll apply the compression to the incorrect track.

  


  Essentially, i'm trying to make it so i'm just layering the spoken-word file on top of the audio track without having to pre-pad the file. I'd rather, if it's possible, this just happen with one block of code within the in one program. I'm interested to see if this is at all possible within ffmpeg.

  


  ffmpeg -i a2.mp3 -i a1.wav -filter_complex "[1:a]asplit=2[sc][mix];[0:a][sc]sidechaincompress=threshold=0.000976563:ratio=10:level_sc=0.015625:release=100:attack=10[compr];[compr][mix]amix=duration=longest[aout]" -map "[aout]" output.wav


  


  a1.wav is mon, a2.mp3 is stereo.

  


  Attempted to implement amix=duration=longest to no avail. Research similar problems on the Stack Exchange that gave unrelated answers.

  


• play m3u8 video from laravel storage

  21 janvier 2020, par Jennsen

  My question is the same as how to play m3u8 videos from laravel storage but this one did not get answers.

  If I play the video from the public folder it does it without problems.

  but if I want to play it from storage this doesn’t work.

      public function watch(Request $request, Episode $episode)
  
  {
  
  
  
      $video = Storage::disk('videos')->get($episode->video);
  
  
  
      return new Response($video, 200, ['Content-Type' => 'application/x-mpegURL', 'isHls' => true]);
  
  }

  this is the definition of my disk in config/filesystems.php

    'videos' => [
  
          'driver' => 'local',
  
          'root' => storage_path('app/videos'),
  
          'url' => env('APP_URL').'/storage',
  
          'visibility' => 'public',
  
      ],

  this is my conversion code (job)

       */
  
  public function handle()
  
  {
  
      $path = $this->episode->id . '.m3u8';
  
      $lowBitrate  = (new X264 ('aac'))->setKiloBitrate(500)->setVideoCodec('libx264');
  
      $midBitrate  = (new X264 ('aac'))->setKiloBitrate(1000)->setVideoCodec('libx264');
  
      $highBitrate = (new X264 ('aac'))->setKiloBitrate(3000)->setVideoCodec('libx264');
  
  
  
      FFMpeg::fromDisk('tmp')->open($this->episode->video)
  
          ->exportForHLS()
  
          ->dontSortFormats()
  
          ->setSegmentLength(10)
  
          ->toDisk('local')
  
          ->addFormat($lowBitrate, function($media) {
  
              $media->addFilter(function ($filters) {
  
                  $filters->resize(new \FFMpeg\Coordinate\Dimension(640, 480));
  
              });
  
          })
  
          ->addFormat($midBitrate, function($media) {
  
              $media->addFilter(function ($filters) {
  
                  $filters->resize(new \FFMpeg\Coordinate\Dimension(1280, 960));
  
              });
  
          })
  
          ->addFormat($highBitrate, function($media) {
  
              $media->addFilter(function ($filters) {
  
                  $filters->resize(new \FFMpeg\Coordinate\Dimension(1280, 960));
  
              });
  
          })
  
          ->save($path);
  
  
  
      $this->episode->update([
  
          'video' => $path,
  
      ]);
  
  
  
      FFMpeg::cleanupTemporaryFiles();
  
  
  
  }

• Revision 37308 : un trigger à la fin du rechargement

  15 avril 2010, par kent1@… — Log

  un trigger à la fin du rechargement