From Optflux
If you’d rather do without the problem of downloading a specific facebook video downloader to download your favorite YouTube video, it's possible to use an online tool. Although there are a lot of web-based download platforms for YouTube, GetanyVideo is our current favorite. It’s and also fast and won’t have you clicking through pages which spawn popups or any other intrusive ads.
Step 1: Find the YouTube video you need to download and copy its URL through the address bar near the top of your browser window.
Step 2: See a GetanyVideo home page.
Step 3: Paste it in to the bar that reads “Enter the video's link...”
Step 4: Select your preferred video format and click the respective blue “Download” button for the right-hand side.