Essential Grid allows you to show YouTube, Vimeo or HTML5 Videos in your Grid Items. It can be mixed also with different videos and images.
As first you will need to define Video Sources in your post (beneath the WP editor) like shown here:
Set the Video Source Order in the Grid Editor shown here:
In the example above the Item Media will try to show first a HTML5 video, if it not exists, try to show a YouTube video, if it does not exist, shows a Vimeo Video, and if none of the Videos do exist, just shows the Featured image.
Set the “poster” image for the shown videos. here you can also set an order, to define which Image source should be taken if one of the predefined poster image does not exist. See: