20190319 mask from file filter in shotcut (part A) 

** FAIR WARNING ** This video is very BORING and meant to serve a couple of specific purposes; very likely will not mollify those alive today looking to be entertained, just saying.
This video was a sample of a how-to demonstration video, a matchstick in the sun when compared to the heaps of software-specific tutorials available on RU-vid in 2019.
This particular video demonstrated how to create a mask in an external program (Photoshop), and then import the file into Shotcut for use with a greenscreen.
Part B (released on a subsequent day) continued with the Chroma Key filters in Shotcut, demonstrating how to remove the green background and fine-tune the filter effects working together en masse.