I have integrated a video gallery in wordpress with I have seen that there are many options to configure these videos but not the option to silence them
<iframe id="video" src="<?php echo $result; ?>?rel=0&vq=hd720&autoplay=1&loop=1&playlist=<?php echo $playlist[1]; ?>" frameborder="0" allowfullscreen></iframe>
The php code is because it is not always the same video but as I said vá varying depending on the bloy and the gallery.
I've seen tutorials with many options but it's not what I need ( link ).