Easy Youtube Video Downloader Express v19.1 
The #1 rated "Youtube Video Downloader" with 1080p Full-HD and 256Kbps MP3 download capability, one of the oldest Youtube grabber addon here on Mozilla addon store with fast and easy 1-Click downloads from Youtube website without loading any external executable.
Major Features :
1) Offers 1080p Full-HD downloads (recent YouTube changes break most other downloaders that attempt this)
2) Single-click 256kbps HQ MP3 downloads
3) Simple, minimalist download button
4) Works well with the new YouTube design
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Please use our support system to file bugs, provide feedback, or ask for assistance.
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PRO UPGRADE : Because YouTube no longer provides direct download links for 1080p and MP3, these two qualities require our own server infrastructure for processing, therefore we’ve assigned these features to a paid upgrade account. You can upgrade here with the freedom to pay whatever you want or are able.
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Tags: download mp3 music social media streaming torrent video converter video downloader youtube