Don't bother. After installing the plugin it had me download an additional program. Then when I saved a youtube video it has a huge QR logo taking up 25% of the screen making the video unwatchable. They than want you to pay $28 to unlock the full version. I did a google search for youtube download and found a webiste that gave me the full 1080P video in half the time and logo free.

best plugin i have used

No youtube download, have to uninstall it. Tubly downloader works better.

Helps a lot in my day to day study.Highly recommended.

Fastastic app for download videos

it works so flawlessly, it's incredible (also bought the license since downloading mp3 files with this extension is just soooo much easier and waaaaaay more convenient)

Der Video Downloadhelper ist hervorragend !!! Ich nutze ihn sehr gerne.

This Firefox add-on has worked flawlessly. I've been using it off and on for a couple of years, and it has steadily improved. The interface is easy to use. A particular download may stall occasionally, but canceling re-starts and completes the download.

easy to use, works in most instances - a big help

Super appli, je recommande vivement.

素晴らしいのだが、金を払ってライセンスを取得したとたん、長時間のデータは全部ダウンロードできなくなった。Cookieを消せば購入前に戻せるので、現在は未購入のまま。一応ライセンス購入ずみだが、購入するをクリックすると長時間無理になるので（泣）このバグ治ったのか？わざと放置してるのか？けど堂々とレビュー聞いてくるので．．．笑　正直無料で十分。

Größtenteils sehr gute und schnelle Downloads aber dennoch wird manchmal ein Download nicht richtig beendet (was ärgerlich ist)

Very useful and easy to use! been a fan for years