Unreal engine into Nuke, Spritesheet workflow

Little explanation of the pipeline I made to create the vfx we used in the 44 Cats the game.
I started with Unreal engine 4, to create all the vfx we needed, from simply jump's dust to explosions. To finish with Nuke bringing it all together, creating spritesheets
Here the link for that GDC interview:
https://www.youtube.com/watch?v=KxnFr5ugAHs