1. Go to the Private Video Page
2. Press 'CTRL + U' to view page source
3. Copy and Paste the page source below
See Tutorial: How to Download Private Facebook Videos
Step 1: Go to facebook and select the video that you want to download.
Step 2: Now right click on the video and click on the show video URL.
Step 3: Now copy the video URL and paste the video URL in new tab.
Step 4: Now Press "CTRL + U" on your keyboard or Right click your mouse and click on the "View Source".
Step 5: Now copy all the source code and paste in the above input box.
Step 6: Now click download button you will be redirected to download page.
Step 7: Now download the video either in HD or SD quality.