Paste the URL into the downloader, click "Download," and select the 540p (Normal) or HD option to save the MP4 to your device. Drafting a "Deep Feature" (Background Story/Deep Dive):
Visit a site like FDown.net or use a browser extension that supports Facebook video downloading. Download Facebook 523812999181019(540p) mp4
I cannot directly download or provide a 540p MP4 file for a specific Facebook video ID ( 523812999181019 ). Paste the URL into the downloader, click "Download,"