ChromaCraft

Dynamic 3D relighting in video diffusion models

ChromaCraft introduces a technique to separate an object’s 3D shape from its lighting in video using specialized LoRA models — disentangling pure geometry (LoRA-G) from lighting effects (LoRA-L). This enables precise, dynamic, and temporally consistent control over video lighting, such as moving a spotlight or changing the time of day. It will be released open source with a “Lighting Palette” of pre-trained styles and tools to train custom models.

ChromaCraft relighting grid