How to force video to center align.

Hi Jacob, if you use shortcode on text-editor, you can set

[youtube video=_9tBFVKhn5o maxw=300 style="margin-right:auto;margin-left:auto;display:block"]

or set paragraph style to center withe buttom of content editor (TinyMCE) and put the only

[youtube video=_9tBFVKhn5o maxw=300]

.
“300” it’s just one example, you can specify the better max-width for your case.

Other solution, can be set the css style on the template and set css class on the shortcode
[youtube video=idvideo class=mynameclass]

and on file css

.mynameclass{
max-width: 300px;
margin-left:auto;
margin-right:auto;
display:block
}