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Disable Autoplay For Videos in Firefox 63

Hi!

Just after updating to Mozilla Firefox 63 (on Windows), I found that my setting to disable autoplaying media / videos was no longer effective - at least for HTML5 videos.

Apparently one of the changes for this release was to include an autoplay video blocker, but I could not find anything definitive about this in the settings.

I decided to disable autoplay for all videos (which is my preferred setting anyway) once again by doing the following:

1. Open the config editor by entering about:config in the navigation bar.
2. Enter the "autoplay" as a filter.
3. Find the entry "media.autoplay.default", double-click it and set it to "1" to disable media autoplay browser-wide.
   

I just left the old setting "media.autoplay.enabled" as "false", even though it does not seem to be relevant any more.

After reloading the website with the video (in this case YouTube), once more it showed the play icon on top of the video instead automatically starting playback.

Source: https://www.linuxliteos.com/forums/on-topic/firefox-63-0-unable-to-stop-html5-videos-from-auto-playing-in-this-release/

I hope this was helpful.

Thanks for reading!