If you would like to download facebook videos online for free without using softwares or app. You must visit Vidflu facebook video downloader where you can download videos easily online for free.
Download Private Facebook Videos Online
How to Download Private Videos from Facebook?
Just select the video you want to download play on full screen, hold 'CTRL + U' OR use right click > to view source. Do the steps according to the screenshot below.
Hold CTRL + A to select everything, then do use CTRL + C to copy the code (HTML page)
Click on "Download SD Quality Video" or "Download HD Quality Video" (if available) to start downloading the video.