Hasta La Motion!

I’m working with undistorted RED 4K 16×9 footage in nuke, after undistorting the plate in pftrack and exporting i ended up with a 4231×2380 plate.

The camera is a left to right track, we are building geometry and projecting patches on walls and ceilings.

I sent the plate to a matte painter, and she painted the whole ceiling revealed in the shot and returned a 4800×2380 patch painted on a certain frame to cover the whole shot.

Now when i project on the geometry and scanlinerender the mp doesnt align with live action.

i attached a reformat node to the scanlinerender with 4800×2308 format and merged under my live action which is 4231×2380.

what am i doing wrong?

I checked in after effects and they fit perfectly.