The Repeating Image Box widget requires a repeater field either on the current page, preview page(post etc) or on an option page. The supported subfields are text, textarea, wysiwyg and oembed. The video box supports Youtube, Facebook and Vimeo.
Widget
You find it easiest by searching for ACF Repeating Image Box in the Elementor Search Widget … field:

Drag the following widget icon into your section to add the widget.

Settings

Select a repeater field and the corresponding subfields will be display.
Layout

Style

Box

You have numerous settings for styling the box.

Header

Video

Content

Example
