Не стабильно. Некоторые версии работают, а новые, на Firefox 52 ESR - глючные.

es muy buena

bv

2 things: seems to stop playback on YouTube completely for me now. So had to disable. And also, can't find the options menu to set default resolution, default video size, like I could pre Quantum. Sad ;(

支持楼主分享！

ras

ottimo elemento

イマイチ

I rely on Verizon cellular for my internet, so my purpose for this plugin is to reduce video quality to the standard that VZW's pitiful network will bear. This plugin used to help me to that end, but so far as I can tell it no longer has any effect and it has been quite some time, so I'm downgrading my rating to 1 or 0.

ok

Why the hell my resolution automatically changes to 720p when I have set medium quality? This add-on definitely doesn't work all the time.
Please take care of it.

não tem como usar, com a extensão habilitada os vídeos ficam travados

Ok number one

good

Excelente

Used to work well, but now videos get set to "auto" quality no matter what I tell the add-on to do. Which always look terrible because YouTube thinks my Internet is worse than it is. Seems I'm looking for an alternative!