youtube embedding not working

Hi;
I recently found out that all the youtube videos that I’ve embedded and the ones I am trying to embed now are not working. Embedded videos are all seen as horizontal black lines. I am not sure if this is about the theme as well. Can someone try to embed the video in this link and tell me if it works for you?

(I had to upload the video to wordpress but buffering takes forever!)

The page I need help with: [log in to see the link]