Easy steps to download a video

1. Open video in a separate tab.
2. The link would be like (https://www.facebook.com/video.php?v=871785179546335&fref=nf)
3. Remove the bold part in step 2 with simple letter m. Now the new link would like (m.facebook.com/video.php?v=871785179546335&fref=nf)
4. Now right click on the video and save it.

Have fun and enjoy