If this specific file is one you own or have found, it is likely a personal video from October 2016 that was originally shared through WhatsApp.
The filename "VID-20161027-WA0045" indicates a video created on October 27, 2016, and shared via WhatsApp, often appearing on public, third-party platforms due to user-generated content sharing. Such files highlight significant privacy risks, as media from private chats can be leaked or inadvertently uploaded to searchable databases, as noted by security experts [Norton, EFF]. VID-20161027-WA0045 - XVIDEOS.COM