I have spent the last two hours trying to center and achieve the video thumbs look you have on demo page, I can not get the thumbs any closer then zero?? yours are almost touching??
(settings)

Display Type
Title Trim Length
Visible Rows
No. of Items per Row
Thumbnail Width (px)
Item Spacer (px)

Can you please advise me as to the settings you have on demo that achieves that look or what they are set at?
Thank you

Depending on your template css, it will align according.

To override it, you need to use "Custom HTML Code Prefix/Suffix" to create a container to align any modules.