Building a Green Screen Keyer with the Custom Tool : UPDATED

UPDATED VERSION (addresses issue of missing clamp() function in the Fusion page of Resolve)
Using just the Custom Tool we'll discover how to build a simple yet flexible green screen keyer complete with matte control and adjustable spill suppression. Some juicy theory in here that you will definitely find useful.
Download tutorial footage from Hollywood Camera Work: www.hollywoodc...
Download background asset: drive.google.c...

[@bukharysalime6183]

thanks simon great video again❤❤

[@PeeJ_ENT]

I was just watching the old custom tool tutorials earlier this week, they’re 6 years old 😵‍💫

[@SimonUbsdell]

What can I say? I've been doing this stuff since the dinosaurs still roamed the earth. I'm horribly old.

[@PeeJ_ENT]

@@SimonUbsdell I think you meant to say you’re extremely wise

[@seanmunaco]

Great way to pull a key. Fusion is very powerful but difficult to use if you’re a beginner. Where did you learn all the expression Language for Fusion?

[@SimonUbsdell]

Thanks. I wish I could say that there was a handy handbook for the expression language but there isn't and you just have to try and piece it together based on the very meagre scraps in the manual, based on what is possible in Lua, and based on what you can glean from other users posting stuff online. The fact that I'd not properly documented is why I made the wrong assumption about the clamp() function - it should be supported but mysteriously it only is in Fusion Studio.

[@Vosper808]

Hi Simon, excellent video! Thanks for posting this. Could you please do a video on ways to build a Pixel Spread / Edge Extend tool in Fusion to fix those edges ?

[@SimonUbsdell]

Thanks. Ah yes, edges! Edges are the really big question always - there are countless tricks you can perform (once you have a good basic matte) that will address the problems that inevitably arise. I will try to show some of them in future tutorials. It's such a deep and fascinating topic and it's crucial to a good key.