Generate AI matte painting video variations with Seedance for VFX review

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📘 Description This workflow is a fully automated AI matte painting generation system for VFX pipelines, designed to convert a single environment prompt into multiple cinematic background variations. It handles generation, validation, multi-variant rendering, compositing preparation, review workflows, and final delivery—eliminating manual coordination between artists, supervisors, and production systems. ⚙️ Step-by-Step Flow The process begins with a webhook trigger that serves as the shot re