D2L's instructional YouTube videos won't embed? Is this due to encryption settings?

Hi there, I am attempting to embed two of D2L's instructional YouTube videos into a content page using templates. When I've embedded other videos using these templates I haven't had any problems. However, I can't these particular ones to work. Is it possible that D2L has set the encryption on these videos to disable embedding? I know you can do this on Vimeo etc. so I wondered if it might be the case here. Thank you!