Needs to be updated. Assuming you use uBlock Origin to remove the ads before the video, or find a video with no ads, the addon will stop the video but you can see in the timeline it didn't stop some buffering from happening. Doesn't matter what options you select some buffering will happen. Please fix

iframe не поддерживает.

works in april 2021, but has no toolbar button for easy access

Probably not needed since you already can block autoplaying video/audio in default firefox, globally or per domain (in this case youtube). Don't know if it's the same for android though.

It works well, however it has a huge drawback. Links with timestamps don't work. When hitting play it starts from the beginning.

Эх блин, не всё работает, очень жаль. Видео хоть и не воспроизводится автоматически, но буферизуется. Также не работает автопауза при смене вкладки. Это же расширение для Google Chrome останавливает буферизацию, хотя настройки одинаковые.

1) Open video in a new tab without going to it directly = > Firefox pauses the video
2) Go to the tab, video start to play automatically.
3) The addon kicks in after some (5 to 6) seconds and pauses the video.
4) You are forced to play the video from the start!

Is it just me?

Doesn't solve the problem of video buffering for 5-10 secs even with the "media.autoplay.enabled" turned to false in "about:config"

It works, but it hides the comments section.

This add-on doesn't have the functionality needed. I was looking for an add-on that even after playing the video doesn't buffer more than 5 - 10 secs at most. Sometimes I might wanna watch a i.e 60 mins video and start it but I get busy with other stuff till I close the browser for whatever reason where I watched only 3 mins. But the video fully buffered So I've wasted 57 mins video equivalent GBs from my internet bundle.

Used to be great but now here's an annoying delay occasionally before the video is fully stopped and a select few times it's failed to stop the video entirely. In addition to this, in the last week or two, I've found it often seems to break comments loading.

cause comment not loaded. i need to play the video to make the comment appears

Not working for embedded youtube videos!