Seize the means of computation on Nostr: In Firefox there's an additional setting for autoplay that doesn't seem to be in the ...

In Firefox there's an additional setting for autoplay that doesn't seem to be in the Preferences section proper.

media.autoplay.blocking_policy

The setting in the Preferences corresponds to "media.autoplay.default" which will block autoplay initially but doesn't cover autoplay policies that result from a user interaction. One of those cases is when you mouse-over or scroll down a page that results in a video or audio playing automatically.

Setting the blocking_policy to 2 will stop that.