This tutorial explains how to encode animations, in this case 13 of them, by filling letters or shapes with green gradients so when Chroma Key is applied, the part of the letter or shape that is visible can be controlled by adjusting the Brightness Range through Key Frames.
Here is the video:
97C5D2AB-32A8-4F67-9684-254FADD2C862.jpeg [ 244.97 KiB | Viewed 247 times ]
I hope you find it useful.
This is Part 2 of a 2 parts tutorial, but it can be watched independently.
Part 1 can be found here:
It was also posted in this forum, here:
Check out my tutorials at: https://www.youtube.com/user/In7egral