Mozilla plans to incorporate a protective feature in Firefox 66, which will isolate the audio to automatic replication.
The audio that plays automatically with a video is definitely one of the most annoying experiences users may have, especially when it's unexpected. Mozilla for this reason, starting with Firefox 66, will prevent websites from automatically playing audio.
This is a feature already in Chrome from 64 and beyond. Firefox will also block media on sites if the audio on this site is enabled to play automatically. And it will not block anything if the media has sound muted.
Of course, you'll be able to set this feature through the About about: preferences # privacy page. There you have to go down to the Permissions section to enter your preferences.
The "Block websites from automatically playing sound" option determines whether automatic playback of audio media is blocked or not in the browser.
Clicking on the Exceptions button opens the list of exceptions to the rule. You can add to your list of websites that you allow to violate your setting.
Firefox users can also control the auto-play sound in the Location Info dialog box. Just click on the "i" icon next to the webpage to display options for controlling its behavior.
There you will find the new list of "autoplay sound" rights, if the site in the active tab tried to play a sound automatically.
Select "allow" to allow playback or "block" if the default setting in Firefox allows automatic audio playback.
Firefox users can block autoplay media through the permissions page about: config
- media.autoplay.blocked set it to 1 (means blocked).
- media.autoplay.enabled.user-gestures-needed set it to true.
- media.autoplay.allow-muted set it to false.
- media.autoplay.block-webaudio set it to true.
The above settings differ from the default configuration, which simply prevents automatic media playback with sound.