All of that information was included in my post.

Browser: Chrome 63.0.3239 Windows
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36
Extension: userjs-chrome 7.53.2

SaveFrom.net helper v 7.53.2 is on.  Tapermonkey v 4.4.  These are the latest versions available.  

There is no green arrow on FB videos.

https://www.facebook.com/groups/amzbit/permalink/1670253256344870/