comfyui-workflows/custom/chris/minimax-h3-extender-working

MiniMax H3 Extender Working

Summary

Chris's current working MiniMax-H3 extension workflow for continuing an imported video with reference-driven follow-on scenes, review checkpoints, and recovery / re-assembly support.

Owner

• Chris

Status

• working-custom

Source

• Personal workflow supplied by Chris via Discord attachment
• Imported into repo: 2026-08-15

What this workflow is

• Starts from an imported source video and audio pair
• Builds imported-video context for H3 continuation rather than starting from a clean prompt-only clip
• Uses a plan-driven extension loop for multiple follow-on scenes
• Supports scene + character reference images, including a third character lane
• Includes a review gate and checkpoint save after each generated scene
• Includes muted-by-default recovery nodes for re-assembling a finished extension without re-rendering

Key working settings captured from the graph

• Input video placeholder: 1.mp4
• Input audio placeholder: リアルもエーアイもこんなんばっか(ソウル).wav
• Source timeline basis: 24 fps
• Base scene resolution node: 1152x640
• Main loop H3 REF2VA node resolution: 864x480
• Clip length on the H3 generation nodes: 124 frames
• Steps constant: 8
• Boolean - Distilled: true
• Boolean 2 Pass: false
• HIGH QUALITY: false
• Optional RTX VSR upscale branches are present but disabled behind switches
• Primary preview / loader override references taeh3.safetensors

Reference structure in this graph

• Picture 1: environment / master scene
• Picture 2-3: Bill body + face
• Picture 4-5: Nancy body + face
• Picture 6-7: Becca body + face
• Imported source video and its audio are also fed back in as continuity references

Notable workflow sections

• Imported media ingest via LoadVideoUI and LoadAudioUI
• Shared set/get lanes for CLIP, VAE_Vid, VAE_Audio, prompt, dimensions, and media assets
• Initial MiniMaxH3ReferenceToVideo block for reference-to-video generation from scene and character stills
• MiniMaxH3ChainPlan plus MiniMaxH3ChainLoopStart / Current / Context / LoopEnd
• MiniMaxH3ChainReview gate set to checkpointed review before continuing
• MiniMaxH3ChainSegmentSave for resume checkpoints
• MiniMaxH3ChainManifestLoad and alternate MiniMaxH3ChainAssemble for recovery / assemble-later flow

Embedded project assumptions

• The prompt text is authored around named characters Bill, Nancy, and Becca
• The embedded example dialogue and action are tailored to a specific rooftop / shop continuation scene
• The graph expects local reference image filenames such as Scn037.png, Char256_Turnaround.png, Char093_Headshots.png, and related assets

Why this lives under custom/

• This is not an untouched external import
• This is not yet a cleaned general-purpose master
• The graph contains Chris-specific prompt language, asset names, and workflow assumptions that are worth preserving exactly as a working baseline

Likely required custom nodes

• kijai/ComfyUI-KJNodes
• ethanfel/ComfyUI-MiniMaxH3-Contex-Loop
• WhatDreamsCost-ComfyUI
• DumasNodes.git
• comfyui-kjnodes
• comfyui_fearnworksnodes

Notes for future cleanup

• A future generalized version could move into optimized/image-to-video/ after stripping Chris-specific prompts, filenames, and scene assumptions
• If this evolves further, keep the raw working graph here and promote only a cleaned derivative to the optimized layer