Yes on the unfolded screen in landscape mode there are bars but after a while you don't really think about it. On older TV shows from Netflix etc they pretty much fill the screen which is great.Apologies, I meant about watching videos, Id imagine there are some serious black bars
Maybe check out a review video on YouTube to see what video content looks like?
I'd never go back to a regular phone though. The Fold 4 I have is just too good.