Shake transition issue: Extending Cleanplate beyond frame

This one has been bothering me for ages. I think I have overcome it a few times but I cannot remember how.

When I track a patch in Nuke, how do I extend it beyond the limits of the frame? In shake, I would do a viewport and with the infinite workspace, you could extend upwards and rightwards really easily. If you wanted to go left or down, you could do a move2d after the viewport to reset the frame back to the same 0,0 origin and the infinite workspace would retain the paintwork you’d done even when it was cropped off.

Nuke doesn’t work like that. In order for the plate to line up, it has to be in the same place and if you extend a crop, you have to reformat the plate to be able to paint in that new space and then transforming/cropping (with black outside turned off) afterwards does not keep the paintstrokes in the way the viewport/infite workspace did.

How do ppl solve this problem? At the moment I am having to do more and more patches at the corners (to cover up sections of road revealed by a complicated crane move) that could be done with one giant cleanplate in Shake.

3D splat maps and camera projections and all that jazz are great but I find doing a simple four-point track in Nuke needlessly complicated.

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