Autoplay must include "muted"

The most browsers nowadays forbid autoplay without mute.

I want to show featured videos, which autoplay.
In the settings, I already choose "Loop" and "always autoplay" (I have the german version - captions may differ)

The video IS rendered with autoplay="1", but it MUST include the attribute muted as well to work.

See this example:
http://pauljadam.com/demos/autoplay-loop-muted-controls.html

This jQuery-snippet will force every video in wordpress to autoplay without sound.
Take this breadcrumb and make the most of it:

$(".wp-video-shortcode").each(function(){if($(this).is("video")){$(this).attr("muted", 1);$(this)[0].play();}})

[alexsweb]

I've added 'muted' => '', in /wp-content/plugins/featured-video-plus/php/class-main.php line 85