pixelfed/app/Console/Commands/CatchUnoptimizedMedia.php

<?php

namespace App\Console\Commands;

use DB;
use App\Jobs\ImageOptimizePipeline\ImageOptimize;
use App\Media;
use Illuminate\Console\Command;

class CatchUnoptimizedMedia extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'media:optimize';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Find and optimize media that has not yet been optimized.';

    /**
     * Create a new command instance.
     *
     * @return void
     */
    public function __construct(Media $media)
    {
        parent::__construct();
    }

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        DB::transaction(function() {
            Media::whereNull('processed_at')
                ->whereNotNull('status_id')
                ->whereNotNull('media_path')
                ->whereIn('mime', [
                    'image/jpeg',
                    'image/png',
                ])
                ->chunk(50, function($medias) {
                    foreach ($medias as $media) {
                        ImageOptimize::dispatch($media);
                    }
                });
         });
    }
}