Exellent addon, just exellent. One of the best and useful for FF. Cannot remember how many years i use it for now. And totally can not imagine Youtube without it. My special gratitude for author - Maxime RF. He support this addon all this years, make actual updates for any updates on Youtube and always faster and helpfully answer via email, if you write him about some problem with Enchancer. Install it at once and welcom for Youtube+ forever.