It appears that your "test" has failed ... after clicking on the play button, a message stating that the owner of the video does not allow embedding, and to go to YouTube to view the video. A simple extra click on the video image will take you there, so there is a semi-no-brainer involved in going to YouTube to see the video, one has to only learn that "going to YouTube to view this video" means to click again on the video image that was embedded.