A way to mute an iframe using jQuery or CSS?

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Is there a way to mute the audio of an iframe using jQuery or CSS?
This is the iframe I need to mute
</script>
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                <span>2021-01-06 03:21</span>
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<p>You can only mute HTML5 <code>audio</code> and <code>video</code> elements.</p>

<p>An iframe does not have an audio API, so you can't mute anything using JS on that element. If you can find a workaround to the restrictions from the same-origin policy, you maybe can select the real audio or video element inside the iframe and mute that.</p>

<p>There is a W3C recommendation for &ldquo;aural style sheets&rdquo;, but I don't know how the browser support for that look like. Using those properties you probably could mute any HTML element:</p>

<pre><code>iframe {
    volume: silent;
}
</code></pre>
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                <span>2021-01-06 03:39</span>
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<p>Here you are with a button based on previous answers http://jsfiddle.net/qumg6e7h/</p>

<pre><code>$('button').on('click', function () {
    var iframe = $(this).prev('iframe')[0];

    if ($(this).hasClass('mute')) {
        $(this).removeClass('mute').text('Mute');
        iframe.contentWindow.postMessage('{"method":"setVolume", "value":1}', '*');
    } else {
        $(this).addClass('mute').text('Unmute');
        iframe.contentWindow.postMessage('{"method":"setVolume", "value":0}', '*');
    }
});
</code></pre>

<p>You can have as many iframes as you like. Just add the button after the iframe and on click mute/unmute the video :)</p>
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                <span>2021-01-06 03:48</span>
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<p>Include this library in your page: https://github.com/vimeo/player-api/tree/master/javascript like this</p>

<p><code>&lt;script src="//f.vimeocdn.com/js/froogaloop2.min.js"&gt;&lt;/script&gt;</code></p>

<p>This code will send an API call to vimeo player to set the volume to 0 once the player is ready, based on http://developer.vimeo.com/player/js-api</p>

<pre><code>// you may need another way of getting reference to the iframe:
var iframe = document.getElementsByTagName('iframe')[0];
var player = $f( iframe );

 player.addEvent('ready', function() {
     player.api('setVolume', 0); 
 });
</code></pre>

<p>http://jsfiddle.net/87dsjL8q/</p>

<p>Or, without the external library:</p>

<pre><code>iframe.contentWindow.postMessage('{"method":"setVolume", "value":0}','*');
</code></pre>

<p>http://jsfiddle.net/87dsjL8q/1/</p>
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