Long camera-controlled video from one image, without the drift that usually comes with it
AspireAI community · arXiv
Long camera-controlled video generation from a single image fails for two reasons: distant frames are conditioned on previously generated output rather than ground truth, so errors accumulate, and it is ambiguous how to fold in camera control. The usual fixes cost too much - self-forcing and explicit 6-DOF pose conditioning either add significant overhead or produce drifting scene geometry. This paper combines autoregressive generation (WanAR) with hierarchical long-context denoising (FixAR). To keep geometry consistent with the input cameras it draws on feed-forward novel-view synthesis and reformulates generation as warping-and-inpainting. To limit drift it denoises in two stages: frames are first generated conditioned on the immediate past, then refined by a second denoiser conditioned on a temporally subsampled long-range history, so every frame effectively sees the full temporal context without paying for it directly. On RealEstate10k and DL3DV the combination beats prior methods for camera-controlled long-video generation on both temporal stability and camera-trajectory consistency.
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