3D editor node — build a blockout scene (primitives, GLB, FBX with animation, gaussian splats), record a keyframed camera path, and feed the rendered mp4 + image + prompt into Seedance / Nano Banana / Flux / any downstream model.
https://github.com/spiritform/comfyblockout
git clone https://github.com/spiritform/comfyblockout
comfy node install comfyblockout