WinX Free YouTube Downloader is a free 4K/HD video downloader and music downloader for Windows 10/8/7. It can auto detect and fast download video from YouTube, Yahoo, Facebook, Dailymotion, Vimeo, MTV, Vevo, Break, niconico etc. of any resolutions like 4096x2160, 3840x2160, 1920x1080, and 1080x720 for free. How to free download online (YouTube) video and music? This free YouTube downloader lets you download YouTube HD video fast.