FreeOrbit4D — Arbitrary Camera Redirection for Monocular Videos

Training-free large-angle camera redirection via foreground-complete 4D reconstruction · ACM SIGGRAPH 2026

Given a single monocular video, FreeOrbit4D re-renders the same scene from a redirected, large-angle camera trajectory — no per-scene training. It combines SV4D multiview synthesis, VGGT + DPG point clouds, a foreground-complete 4D proxy, PyTorch3D rendering, and Wan2.2-VACE video generation.

Paper (arXiv 2601.18993) · Project page · Code

⚠️ These are precomputed results. The full FreeOrbit4D pipeline uses >100 GB of model weights across four stages and runs for many minutes — it cannot execute inside a single ZeroGPU request. Following the build-once / cache pattern, the pipeline was run once on an HF Jobs A100 for the example below, and the input & output videos are served here. See the About tab for details.