Are you able to get HTML code from Facebook? I do not know myself, I have never used Facebook.

Alternately, can you even get a URL for the video itself? If all else fails you should be able to generate your own embed code with that.
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"The devil I'll bring you," answered Hagen. "I have enough to carry with my shield and breastplate; my helm is bright, the sword is in my hand, therefore I bring you naught."