- about:config
- Search for
media.autoplay - Set
media.autoplay.blocking_policyto 1 - Set
media.autoplay.defaultto 5
- Search for
Bonus: How to set default volume level: media.volume.scale set to .25 (or other sub 1 number)
media.autoplaymedia.autoplay.blocking_policy to 1media.autoplay.default to 5Bonus: How to set default volume level: media.volume.scale set to .25 (or other sub 1 number)