It seems like facebook is now using a different format of url for videos.
For example: https://www.facebook.com/BestofVines/videos/542646749235943/
The old format was: https://www.facebook.com/video.php?v=542646749235943
For example: https://www.facebook.com/BestofVines/videos/542646749235943/
The old format was: https://www.facebook.com/video.php?v=542646749235943