The video tutorial show how you can create a quick material that takes the player position and draws a black and white mask around the player location which can be super useful if you need to add drama to your project. You’ll be using the SphereMask in Unreal which basically takes two inputs and draws a sphere around them — white in the middle and black outside.
If you have any other questions concerning VFX or Unreal Engine you can email the artist. Learn more here.