If you want to download videos from the Internet, you don't need to do anything special. In fact, you don't even need to install anything. The video downloader is a free application that works in all modern browsers. 

All you need to do is to copy the video link and paste it into the application, and you're good to go. The built-in browser will automatically open and you can start downloading. If you want to download more than one file at a time, you can add as many video links as you want and download them all at once.