I’m excited to learn more about GenLit, about which its creators say,

Given a single image and the 5D lighting signal, GenLit creates a video of a moving light source that is inside the scene. It moves around and behind scene objects, producing effects such as shading, cast shadows, secularities, and interreflections with a realism that is hard to obtain with traditional inverse rendering methods.

Video diffusion models have strong implicit representations of 3D shape, material, and lighting, but controlling them with language is cumbersome, and control is critical for artists and animators.

GenLit connects these implicit representations with a continuous 5D control… pic.twitter.com/ulo0BNOCTd

— Michael Black (@Michael_J_Black) December 15, 2025