https://wiki.mozilla.org/Media/block-autoplay https://wiki.mozilla.org/Media/block-autoplay has some more additional information in particular about the media.a

https://wiki.mozilla.org/Media/block-autoplay https://wiki.mozilla.org/Media/block-autoplay has some more additional information in particular about the media.autoplay.blocking_policy pref which allows restoring the older behavior of the play intent not being sticky.