Firefox Tips: Stop autoplay of video and audio on youtube

Firefox Tips: Stop autoplay of video and audio on youtube

 

1) Do the following under:-

a) about:config

b)  media.autoplay.default = 5 [0:allow;1:blockAudible;2:Prompt;5:blockAll]
    media.autoplay.blocking_policy = 2
    media.autoplay.allow-extension-background-pages = false
    media.autoplay.block-event.enabled = true

(Note: Tested working under Firefox 103.0.2 / Linux Mint 20.3)