nem lehet letölteni a fejlesztői változathoz!

It works well.
ver. 56.0.2

love

Ok

It's clear

best quality

خوب وراضی کننده

siiip

simple good

Good

For some videos, the quality goes up to 4K, for example: https://www.youtube.com/watch?v=ys3x43wtuJQ

Console log:
19:11:25.243 sfeerf = Object.assign(sfeerf, JSON.parse('{"hd":true,"quality":"hd1080","log":true}'));
inject.js:120:3
19:11:27.209 YouTube HD:: getAvailableQualityLevels returned empty array
videos:19:15
19:13:36.858 Loading failed for the

Really simple and easy to use addon that does what is described. :)

YouTube often selected 720p or sometimes lower settings, even on a 100mbit connection with a 1440p panel, so I kept having to manually select the quality with every video, but now I don't have to! :)