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For Firefox: For Flash, change the Flash Plugin setting to Ask to Activate. For HTML5, switch `media.autoplay.enabled` preference `about:config` to `false`.

by hashhar 10y ago

For Firefox: For Flash, change the Flash Plugin setting to Ask to Activate. For HTML5, switch `media.autoplay.enabled` preference `about:config` to `false`. Or try out FlashStopper [1] to stop both HTML5 and Flash. [1]: https://addons.mozilla.org/firefox/addon/flashstopper/ https://addons.mozilla.org/firefox/addon/flashstopper/