Youtube – Featured Image

Hi,

Ive been posting a couple of youtube videos.

All is okay there, but in the main page I dont get an image preview, only text.

I understand, that in order to have an image on the rigth and text on the left, I must add a featured image to that post.

So, my question is, if there is no featured image related, and I post a video, can I get the youtube image on the right side?