Issue #3225830: Unable to override settings in settings.php

src/PHPFFMpegFactory.php

@@ -48,7 +48,7 @@ class PHPFFMpegFactory {
   public function __construct(CacheItemPoolInterface $cache, LoggerChannelInterface $logger, ConfigFactoryInterface $config_factory) {
     $this->cache = $cache;
     $this->logger = $logger;
-    $this->config = $config_factory->getEditable('php_ffmpeg.settings');
+    $this->config = $config_factory->get('php_ffmpeg.settings');
   }
 
   /**