reverse-animate

7-stage pipeline: stages 1–3 are deterministic signal processing (no model). Stage 4 is the only VLM call, and it only sees curated keyframes plus numeric timing. Stages 5–7 codegen, render-back, and iterate until SSIM ≥ 0.92 or 3 passes.

video.mp4
  → [1] probe & segment     segment_report.json
  → [2] motion profile      motion_profile.json (easing, loop, stagger)
  → [3] keyframe curation   keyframes.json + pngs (8–24 frames)
  → [4] VLM analysis        animation_spec.json
  → [5] codegen             out/{gsap,css,framer}
  → [6] render-back & diff  fidelity_report.json
  → [7] refine              patch spec, repeat 5→6