Hi @LeftProductions That is a good question.
At this time, you cannot create a dynamic video lightbox that is connected with your dynamic collections using the designer tool.
But, this workaround amy help:
hope this helps 
Hi @LeftProductions That is a good question.
At this time, you cannot create a dynamic video lightbox that is connected with your dynamic collections using the designer tool.
But, this workaround amy help:
hope this helps