I tested an embeded youtube video on my website, and it looks fine on the typical pc-based browser. That being out of the way, I decided to check out how it looks in mobile view and the youtube player is elongated vertically. Almost the dimensions of a skyscraper ad. And the thumbnail of the video is also cut, so it looks as if the youtube player is only focusing on the left side of the thumbnail and fitting it vertically. It still plays, but it just looks messed up.