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by karolg
3247 days ago
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Option to disable autoplay in background tabs exists in Firefox for so long that I forgot it isn't enabled by default. Go to about:config and set:
media.block-autoplay-until-in-foreground = true In older versions they used another config variable media.block-play-until-visible . There is also media.suspend-bkgnd-video.enabled to stop decoding video in background tabs after set amount of time (10s default). |
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