syz3r

// Generates a URL-friendly "slug" from a provided string.
// For example: "This Is Great!!!" transforms into "this-is-great"
function generateSlug (value) {
  // 1) convert to lowercase
  // 2) remove dashes and pluses
  // 3) replace spaces with dashes
  // 4) remove everything but alphanumeric characters and dashes
  return value.toLowerCase().replace(/-+/g, '').replace(/\s+/g, '-').replace(/[^a-z0-9-]/g, '');
};

syz3r

Download Udemy course videos using youtube-dl

$ youtube-dl --list-extractors | grep udemy

Steps

1. Get link to the course to download. e.g. https://www.udemy.com/course-name/
2. Login into udemy website, save the cookie from chrome using Chrome (Cookie.txt)[1] export extension. Save it to file udemy-cookies.txt
3. Get the link of the video that you want to download. usually in format. Use the command provided below where you have to replace the {course_link} and {path_to_cookies_file} with respective paths.

# $ youtube-dl {course_link} --cookies {path_to_cookies_file}