Is there a way to customize background video options for the home slider?

Trying to add

preload="auto"

to background videos in the home slider.

It looks like maybe line 7 in default.php is supposed to make that the default setting, but inspecting the video in Chrome shows this html, without the preload attribute:

<video class="sow-full-element" autoplay="" loop="" muted="">

So is there a setting somewhere I missed? Or maybe a snippet to clarify on the forum?

Thanks.