MiniMax H3 Legacy 0.4 Policy Adapter

Version 0.5 split the old single audio mode into three independent axes (final audio, source reference, generated continuity) plus an exact-target lock. If you're dragging a saved 0.4 workflow into the new world, this adapter is the bridge: it takes the legacy combined settings and translates them into the modern one-wire policy, so you don't have to re-derive your audio intent by hand. It's migration plumbing, not something you reach for in new graphs.

What it does

The adapter eats the four settings that used to live on the 0.4 Plan node:

• audio_mode - source_track, generated_audio, or source_plus_timeline. When a modern chain_policy is connected, this widget is ignored and the modern audio intent wins.
• continuation_mode - the raw low-level implementation (guide, tone_carry_guide, latent_guide, masked_av, tapered_av, feathered_av, drift_control_av, color_stable_drift_av, and friends).
• context_length - the old global visual overlap (1, 5, 22, 39…).
• audio_context_length - the generated-audio overlap in 24 fps frames.

Its single output is a chain_policy - one wire carrying all the translated settings - plus a human-readable status summary so you can verify the translation did what you expected.

The exact mapping is: source_track → final=source, source reference=on, generated continuity=off; generated_audio → final=generated, source reference=off, generated continuity=on; source_plus_timeline → final=source, both on. If you're migrating a workflow and want the old behavior preserved precisely, that's what you're getting.

The optional chain_policy input is worth understanding: connect a modern Chain Policy and the adapter only overrides the raw 0.4 boundary fields while preserving the complete modern audio record. Standalone, it owns audio intent itself. Either way, the policy layer nearest Plan wins.

Install and gotchas

cd ComfyUI/custom_nodes
git clone https://github.com/ethanfel/ComfyUI-MiniMaxH3-Contex-Loop.git

Restart, or install via ComfyUI Manager under "MiniMax H3 Contex Loop". No pip dependencies; needs a current ComfyUI with native Add Guide (PR #15439). Models aren't bundled - see the MiniMax H3 Community License for the territory restriction.

The advice from the pack itself is blunt: new workflows should use Chain Policy and, when needed, Advanced Policy Override. Use this adapter only for a genuine 0.4 import, a raw implementation/context pair, or an independent numeric audio overlap. It's a compatibility shim, not a design goal.