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v1.3.0

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@Saganaki22 Saganaki22 released this 22 Sep 14:53
· 6 commits to main since this release
v1.3.0
207af15

Experimental: two-time conditioning on pruned bases (curve refit)

Pruned/curve MiniMax-H3 bases have no time_embedder, so HyperFlow's two-time (t, r) conditioning physically couldn't apply — pruned users were stuck with backbone-only LoRA, single-time, off-recipe. This release adds an experimental curve refit that restores most of that signal:

  • A tiny ~34 KB checkpoint-bound fit (bundled for the FL2VA and REF2VA pruned int8 checkpoints) replaces the missing time-conditioning pathway. No extra model weights, no download.
  • Fits are hash-bound to the exact base + adapter + recipe (strength 1, default gate/sigmas). Any mismatch falls back to backbone-only with a console warning — it never silently does the wrong thing.
  • Preserves the v1.2.5 first-step audio endpoint fix: separate fitted rows for video and audio even where both share t = 0.

Measured against the full base (fixed prompt/seed/latents, 768x768, 124 frames, Euler):

Stream Backbone-only + curve refit
FL2VA video (cosine) 0.81 0.88
FL2VA audio 0.98 0.98
REF2VA video 0.87 0.89
REF2VA audio 0.93 0.997

How to enable: set experimental_curve_refit = True on the Apply node (show optional widgets), keep strength = 1.0, no gate/sigma overrides. Recommended: bypass mode + Euler + the node's SIGMAS output. Details and pruned-base settings: README → Pruned / curve bases.

Honest caveats: recovers most — not all — of the missing conditioning (pruning removed both learned time-embedder LoRAs; some residual is irreducible without training). Single prompt/seed validation so far; the full base remains the reference. New pruned checkpoints need their own fit (validation/curve_spike.py). Full analysis: validation/curve_findings.md.

Also in this release

  • README troubleshooting: "Stuck at Model Initializing" after a ComfyUI update (--disable-fast-disk diagnostic).
  • 88 tests pass; the full-base path is bit-exact vs v1.2.5 (verified across all 8 steps incl. collision/mask rows).

Update: pull latest and restart ComfyUI. The toggle is off by default — full-base users are unaffected.

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