I made this in 2021 to help myself ensure my cameras, screen capture, microphone and desktop audio capture were all in frame-perfect sync for live streaming.
I have this on my phone at al times, but I thought maybe others will find this useful as well.
This was made with Olive Video editor 0.1 in 2021.
Consider this video licensed under CC BY 4.0.
...
https://www.youtube.com/watch?v=5HSdu5Xwxjg