The settings for stopping video autoplay in Firefox changed recently. Since I keep my sound off until needed I didn’t notice until this morning. A search turned up the following thread at Mozilla’s forums that corrected the issue for me (at least temporarily):
Block video autoplay not working
“hi, in firefox 63 the autoplay preferences are reorganized in preparation for this feature shipping out of the box in one of the upcoming versions. in about:config you can set media.autoplay.default to 1 in order to block automatic playback on all pages or set it to 2 to decide on a per domain basis.”
Mandar says
Hi Eric. Thanks – one more change i noticed recently is that if we exit Firefox when we have multiple tabs open – earlier it gave popup to save the tabs for future, now the option only gives a warning while closing and doesnt save the tabs. Do you know any fix in about:config for this ?
Eric (a.k.a. TweakHound) says
I don’t think so:
http://forums.mozillazine.org/viewtopic.php?f=38&t=3042803&sid=18909a5f28ccdbf9ee0af407b941da6f
dan says
What a guy! Thanks a million. Firefox just started autoplaying video with the last update. I am sure it’s driving some people crazy. (like it WAS, me)
RogerL says
Thank you! I had been wondering what had changed.
I set media.autoplay.default to 1 and once again videos do not auto play.