Below you'll find an example from the Custom Fields Vimeo plugin.
This plugin lets you create new fields for 'Vimeo videos' in any extension where Joomla custom fields are supported.
You can set a lot of parameters like video width and height (in % or px)
The PRO version also has options to hide or show related videos,choose your color, autoplay and allow fullscreen.
Joomla for Dummies - 2020 Edition from Mathew Tamin on Vimeo.