Greasy Fork is available in English.
Adds features to YouTube player page: fill window with video, stretch, float video, set HD 4K 8K resolution, hide annotations and ads, click skip ads, click show more, loop, replay a video segment, pause at start/end, zoom and pan video.
< Feedback on YouTube Player Controls
Are you running it with Tampermonkey?
I'm using latest Waterfox with Tampermonkey...no button's show up. :(
I doubt it, in android it's "m.youtube.com", which is not included in this script.
doesnt work
latest chrome windows 7, oddly it works on kiwi browser on android 7 but on my windows the gear icon is completely not visible.