How to make an animated OBS overlay for FREE with Davinci Resolve and FFmpeg

Just recently learned how to make Davinci Resolve deliver video with an alpha channel, allowing animated overlays with built-in windows that I could make in Fusion. So here's a quick tutorial that I hope helps people who want to make their own, personalized, overlay using available free software.

If you feel like dropping a dollar on me :)
subscribestar.com/quantumapprentice

A useful link for anybody asking about the command line I used:
video.stackexchange.com/questions/24582/is-it-s…

And this guy shows how to do something similar with animated image sequences using Krita and ffmpeg:
youtube.com/watch?v=uC5RtQR9rAY&lc=z23gtx3a…

How to Install FFmpeg for Windows 7 and 10 video:
youtu.be/5BWaCzhm2BQ

How to install FFmpeg for Windows 7 with Pictures:
blog.gregzaal.com/how-to-install-ffmpeg-on-wind…

How to install FFmpeg for Windows 10 with Pictures:
windowsloop.com/install-ffmpeg-windows-10/

And the command line I used in the batch file to convert all mov files in a directory to webm files - Copy and paste the next couple of lines into a blank text file, save it, then rename it and change the extension from .txt to .bat

FOR /F "tokens=*" %%G IN ('dir /b *.mov') DO ffmpeg -i "%%G" -c:v libvpx -b:v 6M -auto-alt-ref 0 -pix_fmt yuva420p "%%~nG.webm"