4K Video Downloader is free software that makes it easy to download videos and playlists from YouTube, Facebook, Vimeo, DailyMotion, Tumblr, and other streaming video sites.
Downloading a video is simple. Just copy the link of the desired video, then once your 4K Video Downloader installed, click on the Paste link. After analyzing the link, a window will appear with several options. You can choose the quality of the video (including Full HD and 4K), the format (MKV or MP4, for example), where to save it, and the file name, and it’s done.
4K Video Downloader is also available for Mac and Ubuntu computers on this link.