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Is there a flag to unblock autoplay of videos while launching firefox from command line?

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I am trying to run a firefox instance with the help of Xvfb-run and play video in a tab. The video is set to autoplay on load, but firefox(>=66) has the default set to block audio and video. I want to set that flag to false, this could be done using the GUI but I want to somehow do it using the CLI itself. Is there a way?

I am trying to run a firefox instance with the help of Xvfb-run and play video in a tab. The video is set to autoplay on load, but firefox(>=66) has the default set to block audio and video. I want to set that flag to false, this could be done using the GUI but I want to somehow do it using the CLI itself. Is there a way?
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  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36

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