I using post there I've added embedded youtube video on several posts. On the first post on the main page is visible but the second which is situated under first and the third too is seeing grey rectangle video is not visible how to fix it?

Hi my site still only on my machine is not live.

I've attached picture and I'll try to describe you.

I have two video post  on my page. As you can see on picture Latest post you see video and the youtube play button.

On the second post with name "U.S. Open of Surfing: What to bring, leave home for surf contest" also have embedded youtube video but as you can see on picture there is only title. When I've clicked on the link it opens page where there is video but on the main page I see only link