#1 - Unmodified - 18.3m - .webm

video as downloaded via hightail

#2 - ffmpeg compressed (2 passes - 2M average bitrate - audio stripped - libvpx-vp9) - 15.7m - .webm

this method follows the prescribed best practice for ffmpeg using vp9 encoding outlined here

pretty small amount of compression, but video quality is well maintained.

very small file size, but significant quality loss