No i mean the massive hole in the middle gping down to the bottom left When I select the colour something strange happens.
Is that area just wall beneath the window? If the blue is just to key for a BG replacement through those windows, my understanding is after pulling the ibk key, you just want to isolate the areas you want to use from the IBK key, and then fill in stuff like that wall with fill keys and garbage mattes. I could be wrong here though and I’m just missing something, I have very rarely used the IBK matchbox.
No i mean that matte is all 1 shot and the IBK breaks it up for some reason. Trying to figure out why. It’s almost like the IBK had applied ots own garbage matte?
I think it’s hard to tell what’s going on without seeing the plate it’s being keyed from. Is that somewhere on this thread?
Hey @Ben
I jinxed it by saying I had finished my big job and then got slammed with needing to supply all of the CG separately on black.
I have almost got a brief demo done for you. I can’t stand to hear my own voice so it makes it a little hard to watch. I’ll upload where I am at and I can always re record it again.
If you are questioning the output I suggest taking a look at the clean plate that the IBK has made. It looks like the clean plate will have a lot of black. Probably due to it not having filled it out enough.
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Ok. I rushed this a little last night.
I want to do it again and have me spend some time making my clean plate better using some stabilisation and probably recursiveOp to show how with a little more time making the clean plate you can improve the matte. But the bare bones are there and more often than not this is how I use it.
I have some blue screen footage from my last job that I’ll pull out and I’ll include that to show how I just reuse my same schematic and tweak a few things to make it work on blue.
I have posted a youtube link below
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@PlaceYourBetts you are a legend for posting this up.
I can’t view it on my phone but will jump on a laptop later on. Thanks again.
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I dont think there is any audio @PlaceYourBetts
Much easier for me to watch it that way 
@Ben
I have just checked it on my phone and although my audio isn’t amazing it appears to be present and correct at my end.
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haha im sure you have a wonderful voice, cant be worse than mine! Unfortunately i cant hear your voice though, the volume control is grey on the link for me.
Can anybody else hear the audio?
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@PlaceYourBetts you are a wonderful man!
This is such a fantastic breakdown!
I presume when its a blue screen you have to switch the no no green and blue around?
This is awesome! Thank you for this!!!
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Me!
Finally had a chance to watch this video. Great job - I really like that 2nd clean plate method you show us. Very cool.
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The spine of this setup, including the math and the rationale was developed and disseminated by Xavier Bourque from Hybride in the early 2000s with help from all of that brain trust.
It was the magic bullet that made spy kids and 300.
Clever people those Canadians.
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