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2. HorizonRelight: Relighting Long-horizon Videos Consistently via Diffusion Transformers

 # HorizonRelight: Relighting Long-horizon Videos Consistently via Diffusion Transformers

  ![](/sites/default/files/styles/wide/public/publications/qualitative_prompting_editing.jpg?itok=FAs8S8IO)

 Diffusion-based video relighting enables controllable relighting from a single input video, but modern video diffusion backbones are trained on short clips and applied to long-horizon videos through chunked sliding-window inference, often causing temporal discontinuities at chunk boundaries. We address this by treating long-horizon relighting as a temporally conditioned latent-domain translation problem. Our framework enforces cross-chunk continuity by propagating target-domain latents across boundaries. Masked self-conditioning in the target domain teaches the model to continue from temporally masked propagated context. We further introduce warm-start prompting, which uses a relit prompt anchor from a controllable generative model to establish the initial target-domain state and provide a general interface for prompt-based relighting. Experiments on in-the-wild long-horizon videos show markedly improved temporal consistency, substantially reducing chunk-boundary artifacts and suppressing unwanted appearance changes between chunks.

 ## Authors

Jing Yang (NVIDIA, University of Southern California)

Mayoore Jaiswal (NVIDIA)

Zian Wang (NVIDIA)

Xiao Steven Zeng (NVIDIA)

Yajie Zhao (University of Southern California)

Rochelle Pereira (NVIDIA)

Jianyuan Min (NVIDIA)

 ## Publication Date

Friday, August 14, 2026

 ## Published in

[Arxiv](https://arxiv.org/abs/2606.29095)

 ## Research Area

[Artificial Intelligence and Machine Learning ](/index.php/research-area/machine-learning-artificial-intelligence)

[Computational Photography and Imaging](/index.php/research-area/computational-photography-and-imaging)

[Computer Graphics](/index.php/research-area/computer-graphics)

[Computer Vision](/index.php/research-area/computer-vision)

[Generative AI](/index.php/research-area/generative-ai)

 ## External Links

[Project Page](https://research.nvidia.com/labs/sil/projects/horizonrelight/)