I've been using this add-on for a long time now, in Firefox, Brave and Chrome with not a single problem. I can't use YT without it now, it has so many quality-of-life improvements it's ridiculous.

Just to name a few I love that I can hold down right-click and scroll to change volume in full-screen, hold down ctrl and scroll to speed up/speed down. Not to mention that it's possible to scroll down even in full-screen, if you want to quickly see views, uploader, description, or how many viewers if it's a live stream.

Totally 5/5, with very few permissions to top it off.

It makes my youtube experience so much better.
I would love if the developer(s) could add a way to show the total video duration adapted to the current playback speed. (Similar to what SponsorBlock does)

Based.

Ad blocker doesn't work anymore...

Tried, extensively tested... not approved.

Unfortunately, the YouTube now make problem when try to use this. (It wants its advertisements even the users disappears).