Simplest method to download facebook videos without any software| for more go to rompure.com

Steps:

1. Right click on video while its playing and click show video url.
   
   

   
2. Copy generated video URL. 
   In my case, it is https://www.facebook.com/iamkamalnayan/videos/651573224985442/
3. Replace www to touch in the URL and open in new tab (or existing one).
   Old URL: https://www.facebook.com/iamkamalnayan/videos/651573224985442/ 
   New URL: https://touch.facebook.com/iamkamalnayan/videos/651573224985442/
4. Play the video.
5. Right click on video, while its playing.
6. Click on Save Video As to save the video.

That't it. The video will be now downloaded on your PC.