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aalves / Getting Started with a User Script 

// ==UserScript==
// @namespace     https://openuserjs.org/users/aalves
// @name          Getting Started with a User Script
// @description   Showing the current basic and recommended format for a User script.
// @copyright     2017, aalves (https://openuserjs.org/users/aalves)
// @license MIT
// @version       0.0.1
// @include       https://www.youtube.com/iframe_api
// @grant none
// ==/UserScript==

// ==OpenUserJS==
// @author aalves
// ==/OpenUserJS==

/**
 *
 * Please begin typing or paste your User script now.
 *
 */

document.getElementById("movie_player").seekTo(120);
console.log("success");