Third-party notices

For a user-facing map from features to upstream sources and local implementation files, see Feature traceability. This file remains the authoritative attribution, revision, and license record.

ComfyUI-H3-Prompt-IDE

The nightly prompt-editor completion, marker-interaction, tokenizer diagnostic and preference improvements are selectively adapted from ComfyUI-H3-Prompt-IDE at revision 8d3bccf11291096da4e0150e2e6fc23b014967d1, GPL-3.0. That standalone editor originally derives from this repository's rich editor.

The adaptations live in web/h3_prompt_completion_core.mjs, web/h3_prompt_schema_core.mjs, web/h3_prompt_marker_ui.mjs, web/h3_prompt_editor_settings_core.mjs, and both embedded editor surfaces. Chain-specific tagged/semantic reference mapping, per-scene undo, Plan synchronization and ownership protection remain local. The standalone task-aware Edit templates and native-undo replacement are not incorporated.

ComfyUI-LegacyWidgetWidthFix

The canvas-wide LiteGraph widget-width compatibility layer is adapted with permission from ComfyUI-LegacyWidgetWidthFix by pekkAi-dev. This pack embeds the repair behind its existing H3 nodes and does not claim or register the standalone project's LegacyWidgetWidthFix node id. Shared legacy widget marker names are retained deliberately so both extensions can coexist without stacking incompatible widget descriptors.

ComfyUI-H3-Motion-Context

This repository grew from the original H3 Motion Context implementation by NikoDemon80:

https://github.com/NikoDemon80/ComfyUI-H3-Motion-Context

The shared initial implementation and research remain under this repository's GPL-3.0 license and are preserved in its Git history. Niko's project owns the original MiniMaxH3MotionContext* public node ids. This specialized loop pack uses separate registrations while vendoring upstream's shared marker and patch-ownership ABI, allowing both projects to be installed without registering the same nodes or double-wrapping ComfyUI.

patch_layout.py and patch_payload.py retain the shared ownership markers from upstream revision c140ae99b8c3 (0.2.0, 2026-08-09). This loop fork extends the layout implementation with native-guide capability detection while preserving that ownership ABI for safe co-installation on legacy ComfyUI.

Upstream revision 658ba11ae917 (0.3.0, 2026-08-12) by NikoDemon80 is also the source of the retained last_frame design, 56-frame context option, and the in-graph Seam Probe adapted here. This fork gives the probe a distinct public node id so both packs can remain installed together, and retains its own native-guide and recursive-chain integration.

ComfyUI-H3-Motion-Context-MultiRef

The cumulative audio-sample budgeting approach was inspired by ComfyUI-H3-Motion-Context-MultiRef by seitanism. This repository implements the idea independently for its checkpointed generated-audio and saved-prelude assembly, using cumulative delivered video-frame boundaries so per-scene rounding cannot accumulate into long-run A/V drift.

On the nightly integration, motion_context_upstream.py dynamically discovers that pack's public MiniMaxH3MotionContext registration and calls it for compatible Guide scenes. No upstream source is copied by this adapter. The visible Chain node and saved workflow remain local; capability checks retain the internal implementation for Loop-only modes the upstream contract does not yet expose. This runtime integration was reviewed against upstream revision 5839d453efa0346c1da49acc39fc65050c5c48c0 (2026-08-30), GPL-3.0.

The retained internal fallback was also brought to that revision's arbitrary Guide-length and target_start placement behavior. h3_audio_grid.py adapts the same revision's exact 40 Hz PCM-grid helper so source-audio continuation cannot be shifted by a generic VAE wrapper's normal center crop. Local keyframe arbitration, latent Guide, audio-only and longer-audio continuity, signed fractional audio placement, and legacy-core support remain extensions of this loop pack.

The experimental masked AV chain mode directly adapts that GPL-3.0 project's masked existing-video extension and its capability-aware runtime compatibility for ComfyUI PR #15375. In this loop integration the preserved source is the previous accepted scene checkpoint: decoded tail frames are VAE-encoded into the next target video latent, its sampled audio-latent tail is copied directly, and both target prefixes receive 0 = preserve, 1 = generate masks.

Adapted source files and integration:

h3_mask_compat.py — PR #15375 model/sampler capability detection and fallback;
h3_mask_payload_compat.py — native-first AV mask payload extraction;
masked_context.py — recursive target-prefix construction derived from the MultiRef existing-video implementation, including Update 6's audio-only eight-tick half-cosine handoff as a distinct continuation mode.
master_audio_context.py — exact master-audio target replacement and optional protected video-prefix construction adapted from MultiRef Update 4, plus Update 6's direct sampled-latent video continuation path.
av_timing.py and nodes.py — Update 6's exact absolute PCM-boundary and small decoded-audio time-conformance approach, adapted to the recursive checkpointed trim path.
masked_bridge.py — two-ended protected AV target construction adapted from MultiRef Update 5's masked bridge.

The referenced MultiRef revision is 4b484a3 (2026-08-14), GPL-3.0. Its v2 mask-engine marker is recognized for safe migration. This pack uses a v3 model, sampler, and payload ABI for PR #15375 commit 989e7a9, replacing only recognized older blend/payload wrappers whose semantics changed.

The master-audio node adapts MultiRef Update 4 at merged revision 9118251 (2026-08-14) and its Update 5 target-audio-grid boundary correction at merged revision 31e6cb7 (2026-08-15). Absolute master-audio slice endpoints and small decoded-audio time-conformance follow Update 6 revision 56f7586597929c43a6373ef28f6f84f26411b223 (2026-08-17).

The two-ended masked bridge adapts MultiRef Update 5 at merged revision 31e6cb7 (2026-08-15).

ComfyUI MiniMax H3 per-token AV masks

The underlying per-token video/audio latent masking design and upstream implementation are from ComfyUI PR #15375, authored by drozbay. The vendored fallback is scoped to masked target-latent operations, prefers native equivalent behavior automatically, and is not activated by ordinary guide-mode chains. It tracks the post-review mask-blend design through upstream commit 989e7a9bb79a370d20f63674b54dead993f6f4a1 (2026-08-15).

MaskVidExperiments causal mask conversion

The exact H3 pixel-mask conversion in masking_ops.py adapts the causal frame-group derivation, conservative max reduction, and 2×2 latent-token snapping from MaskVidExperiments by drozbay. This integration specializes that general VAE-aware algorithm to MiniMax H3's fixed 1,4,4,4,4 frame cycle and existing joint-AV masked target; it does not copy the upstream crop, uncrop, or workflow nodes.

The referenced revision is d98cc899c1fac718acf81cde1735bf57281097cf (2026-08-17), GPL-3.0.

ComfyUI-MiniMaxH3-PerRowMasking

The public general-masking workflow and its source-media/mask-grid utilities adapt the earlier experimental ComfyUI-MiniMaxH3-PerRowMasking repository by ethanfel. That GPL-3.0 project established the source AV 17k+5 trim, exact 32×32 effective-cell preview, mask-convention controls, source-latent workflow, and audio-preservation UI used as the starting point.

This integration uses revision d6a7964b9fd64f65f1773f84cba3b29665128e59 (2026-08-07). It does not copy that project's temporary per-model forward wrapper. Instead, Apply Target Mask reuses this pack's newer capability-aware PR #15375 engine, composes existing nested masks, and exposes additional temporal/custom audio-mask modes under distinct node IDs for safe co-install.

ComfyUI MiniMax H3 Add Guide

Native-guide compatibility targets ComfyUI PR #15439, authored by drozbay. That contribution introduces arbitrary-position image, video, and audio guides plus native keyframe/reference payload merging in ComfyUI. This repository does not copy its node implementation; it detects the exposed core layout API and emits compatible guide records from Loop Context.

MiniMax H3 Chained Character Swap

The opt-in tapered_guide continuation adapts the tapered chroma-noise context recipe, palette, validated default strengths, and deterministic-noise design from minimax-h3-chained-character-swap by MacroSony. This integration applies the transformation in memory to an immutable clone of the exact recursive context tail, derives its noise seed from the scene seed, and generalizes the published 22-frame baseline to other explicit Guide lengths as an experimental option.

The referenced revision is 609e74233445067afa06bd5a3428bc645d555a01 (2026-08-16), distributed under the MIT License:

MIT License

Copyright (c) 2026 MacroSony

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

ComfyUI-H3-Context-Noise

The experimental tapered_av / Detail AV transition adapts the latent Gaussian context-noise recipe, matched-latent-standard-deviation scaling, validated 0.45 to 0.10 two-step taper, and deterministic CPU-noise design from ComfyUI-H3-Context-Noise by beijinren. This integration applies the treatment only to an immutable, disposable copy of the recursive 39-frame video-latent prefix, leaves the audio latent and denoise masks unchanged, and fingerprints the recipe for safe checkpoint resume.

The referenced revision is 7e5531233b42dadd19c40d86770521a36508c358 (2026-08-18), distributed under the MIT License:

MIT License

Copyright (c) 2026 beijinren

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

ComfyUI-MiniMaxH3-Easy

The H3 Chain Plan editors' quick @ reference-tag and # dialogue-tag interactions, rich reference chips, media miniatures, compact optimizer presentation, and direct-provider transport pattern were inspired by ComfyUI-MiniMaxH3-Easy by nkxx188. The graph-aware scheduled-reference mapping, scene-card editor, plan serializer, prompt revision storage, MCP agent bridge integration, H3-scoped instruction/context contract, timing calculations, and chain integration in this repository are an original implementation.

ComfyUI-MiniMaxH3-Easy is distributed under the MIT License:

MIT License

Copyright (c) 2026 nkxx188

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.