I have cleanplate and source video and need to setup Color Difference keyer in UE
You might check out https://youtu.be/QojUd7Btmng He has 2 greenscreen composure youtube videos to step through the basics…
Yes, this was a first videos, that i’ve check. Still have no idea how to use cleanplate for difference keying
Just to be clear- are you talking about greenscreen or difference matting?
I sent the link of greenscreen setup. (and typically no need for a greenscreen)
Difference keying is comparing pixels of 2 images and extracting the pixel difference.
Coded in C++ in non Unreal apps but never dealt with Blueprint/Materials.
What they’re calling color difference isn’t a true difference key. Suggest duplicating the Over material and simply replace Add with a Subtract and pass the 2 images in directly. Then you’d want to clamp the results and make as a grayscale for the actual matte. (Ideally difference would be in HLS or other color space than RGB but it’s a start). I’m fairly new to Unreal so haven’t done it myself.
Decent results. I guess the question is whether you want to use it also without the greenscreen at some point.
I am a professional vfx comper diving now into realtime production, I can built my own keyer as a material but was wondering whether it is possible to use the already good enough keyer (at least for previz) from Composure on an image plane? Seems a lot of people tried but didn’t get it… any ideas? Thx, Mark
