Step 1
Make sure you're connected to Facebook on the same browser.
Step 2
Right Click on the video then Copy link address.
Step 3
Go to our GetFb.Net. Paste the link and Click Download.
Step 4
Copy and Open the new generated link in a new tab. Then Click Next.
Select all and Copy all the text from new tab. Then Paste it on the Facebook Video Downloader, before clicking Download
Note: Make sure you're connected to Facebook on the same browser (in a different tab), that's important.