MiniMax H3 — ComfyUI Workflows
Drag-and-drop ComfyUI workflows for MiniMax H3, the omni-modal video model that generates video with native stereo audio (voice, SFX, room tone — all in one pass). Shared by @BennyDaBall_OG.
Workflows
| File | What it does |
|---|---|
MiniMax_H3_Turbo_v4_8step_T2VA_BennyDaBall.json |
Text → video+audio with the Turbo v4 LoRA — 8 steps instead of 20, ~1.9× faster, audio stays clean |
Turbo v4 · 8-step T2VA
100% core ComfyUI nodes — no custom node packs. Verified with a same-seed A/B against the stock 20-step recipe: same choreography, healthy audio (peak ≈ −9 dB, zero clipping).
The recipe
| Setting | Value |
|---|---|
| LoRA | minimax_h3_turbo_v4_step600_ema_pruned_comfyui @ 1.0 (built-in LoraLoaderModelOnly) |
| Steps / sampler / scheduler | 8 · euler · beta (no sigma-shift node needed) |
| Guidance | CFG-free (BasicGuider) — write a Negative: line inside the prompt itself |
| Resolution | 1344×768 @ 24 fps |
| Length | frames on a 17k+5 grid: 124 ≈ 5 s, 243 ≈ 10 s, 362 ≈ 15 s (model max) |
The bundled demo prompt ships with a fixed seed so your first render reproduces the demo clip — flip the seed widget to randomize for new takes.
Getting started
- Update ComfyUI to ≥ 0.30 (MiniMax H3 nodes are built in).
- Drag the
.jsononto the ComfyUI canvas. - ComfyUI will offer to download any missing models automatically (every loader node carries its download URL). Manual links below.
- Queue. First run: the console should show zero
lora key not loadedwarnings.
Models
| File | Size | Folder |
|---|---|---|
minimax_h3_fl2va_pruned_int8_convrot.safetensors |
19.5 GB | models/diffusion_models |
qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors |
14.6 GB | models/text_encoders |
minimax_h3_video_vae_fp16.safetensors |
1.4 GB | models/vae |
minimax_h3_audio_vae_fp32.safetensors |
0.4 GB | models/vae |
minimax_h3_turbo_v4_step600_ema_pruned_comfyui.safetensors |
620 MB | models/loras |
Tested / not tested
- Verified on 5-second clips at 1344×768. Higher res (1920×1088) and longer clips are untested with this LoRA — earlier turbo versions fell apart there, so treat that as experimental.
- Few-step audio blowout is the classic turbo failure mode; this v4 @ 8 steps is the combo that passed. If you drop steps further, check your audio peaks.
Prompt pattern that works
Style contract → timed beats (0.0-0.6s: ...) → camera lock line → an audio timeline starting with room tone at 0.0s → Negative: line. Dialogue inside <d>[English] ... </d> is spoken verbatim with lip-sync. Give the first spoken line ≥ 1.2 s of lead-in and anchor t=0 with room tone. The demo prompt in the workflow shows the full pattern.
Credits
- MiniMax H3 by MiniMax · ComfyUI-repackaged weights by Comfy-Org
- Turbo LoRA trained by larryvrh (v4_step600 EMA) · ComfyUI convert by drbaph
- Workflow + testing by @BennyDaBall_OG
License note: this repo covers the workflow files only. The H3 model weights and the LoRA carry their own licenses — check the linked repos before commercial use.