HD Video Downloader is a super Browser addon that allows you to download video, audio files from some Video and music websites.. It supports a huge selection of sites.. included Facebook, Vimeo, YouTube, soundcloud, Vkontakte, Blip, Metacafe, Break as well as thousands of others.
Its auto Detects if you are viewing a video or listening to a Mp3 song and creates a link to the file in the address bar (right of the omnibox) that you can click to download it.
███►How to download YouTube video in 1080p
★First Select 1080p Video Quality From YouTube Player menu
★When you ensure that video is playing in HD Then click on Download Icon