diff --git a/lib/fluent-ffmpeg.js b/lib/fluent-ffmpeg.js
index 7e648560..e73c0f12 100644
--- a/lib/fluent-ffmpeg.js
+++ b/lib/fluent-ffmpeg.js
@@ -2,11 +2,13 @@
 'use strict';
 
 var path = require('path');
+var { fileURLToPath } = require("url");
 var util = require('util');
 var EventEmitter = require('events').EventEmitter;
 
 var utils = require('./utils');
 var ARGLISTS = ['_global', '_audio', '_audioFilters', '_video', '_videoFilters', '_sizeFilters', '_complexFilters'];
+var dirname = typeof __dirname !== "undefined" ?  __dirname : path.dirname(fileURLToPath(import.meta.url));
 
 
 /**
@@ -63,7 +65,7 @@ function FfmpegCommand(input, options) {
 
   // Set default option values
   options.stdoutLines = 'stdoutLines' in options ? options.stdoutLines : 100;
-  options.presets = options.presets || options.preset || path.join(__dirname, 'presets');
+  options.presets = options.presets || options.preset || path.join(dirname, 'presets');
   options.niceness = options.niceness || options.priority || 0;
 
   // Save options