How the FUCK do you use a brighness value for the alpha channel?
I have used Blender/Premiere before and its usually been quite an easy process, but there is no obvious way in Resolve and it's driving me crazy. Searching on the internet was kinda useless, cause all tutorials are just about magic mask. And no, I dont want to use an add Blend-Mode in this case.
I figured out you could add an alpha output at the end of the color page, but this kinda useless because i want to add some effects that rely on a working alpha channel (glow/blur fx).
I pretty much just want to do what the blender example shows, i dont really care if its fusion or Color-Page, but i want to add FX after the mask is applied. (Footage is different from image used, its just a quick example)