Thanks - I got it! If you can paste the following code in my original post, I’ll mark it as the best answer so it will be easier for others to find it in the future.

/** Adjust size of the captions for videos **/

.flowplayer .fp-captions p { 
	font-size: 1.3vw;
	line-height: 1.3vw;
}
.is-fullscreen .fp-captions p { 
	font-size: 2.3vw; 
	line-height: 2.3vw;
}

Original post:

@Daniel done, thanks! Sorry again for the delay, I thought I had more readily access to some dummy videos than I currently do.

@Bfarkas No problem at all! Really appreciate all your help on this