this extension is very good and navigation and instructions are also very clear but i have given 4 stars because there is no button for whitelisting the channel like some ad blockers provide, i have to copy and paste the channel's name every single time,if you can aad that this extension will become 5 star awesome.

Better Youtube experience indeed.

Must have addon.

Suggestion: Option to disable "Miniplayer(i)" button (youtube's own feature), since I often mix it up with theater mode button and don't need it ever. If this can be done, I'll give 5 stars.

Very pleased with this add-on. Everything works for me, almost. I will support. I WAS able to control the VOLUME 100%, but now only 10%. This means I have to jump to my system volume control. Useless for me. Not a feature any more.

could use a download video/mp3 option

很好用的YouTube套件但是最近看影片又會跳出廣告要按略過廣告才能看

Sorry for my English.
Please make it possible to permanently pin the control buttons. It would be better if the actions were performed in one click, but not hover to show buttons, move cursor and click.
Please make it possible to disable the mouse wheel speed control when the cursor is on the speed button. When I scroll through the page and the cursor hits the button, the speed changes. Very uncomfortable.

Так то полезный аддон, но Stop Autoplay очень криво работает, открываешь несколько страниц ютуба, ставит на паузу, переходишь на какую нибудь, нажимаешь воспроизведение... а через секунд 3 опять ставит на паузу...
Этот аддон идеально ставит на паузы...
https://addons.mozilla.org/ru/firefox/addon/stop-autoplay-youtube/

Love the functionality this add-on provides (especially the custom themes and ad block are great), however sometimes it freezes the tab. Happens about 3-4 times a day with admittedly very heavy use, so it's bearable but nonetheless annoying.

I use only the boost audio and loop button, with this settings, it's really odd to have just two button on the bottom of the page, it would be better to add it on the player toolbar itself !!! (or like the "maximize video" userscript from icycat (冻猫) = attached on top right of the player and visible on hover only)