MiniMax H3 8-Step Acceleration in ComfyUI | MiniMax H3 All In One

Create cinematic video with synced native audio through unified references and accelerated eight-step sampling.

Who it's for: creators who want this pipeline in ComfyUI without assembling nodes from scratch. Not for: one-click results with zero tuning - you still choose inputs, prompts, and settings.

Open preloaded workflow on RunComfy

Open preloaded workflow on RunComfy (browser)

Why RunComfy first
- Fewer missing-node surprises - run the graph in a managed environment before you mirror it locally.
- Quick GPU tryout - useful if your local VRAM or install time is the bottleneck.
- Matches the published JSON - the zip follows the same runnable workflow you can open on RunComfy.

When downloading for local ComfyUI makes sense - you want full control over models on disk, batch scripting, or offline runs.

How to use (local ComfyUI)
1. Load inputs (images/video/audio) in the marked loader nodes.
2. Set prompts, resolution, and seeds; start with a short test run.
3. Export from the Save / Write nodes shown in the graph.

Expectations - First run may pull large weights; cloud runs may require a free RunComfy account.

Overview

MiniMax H3 8-Step Acceleration is an all-in-one ComfyUI workflow for creating cinematic video with synchronized native audio. Its unified reference node supports images, videos, paired video-audio, and standalone audio, while the ready-to-run default uses one image and a motion prompt. A Turbo LoRA and 8-step sampling accelerate generation, with tested settings designed to run reliably on a 48 GB GPU.

Important nodes:

Key nodes in the ComfyUI MiniMax H3 8-Step Acceleration workflow

• MiniMaxH3Unified (#212). The central All-in-One multimodal reference hub for MiniMax H3. It brings image, video, video-audio, standalone audio, prompt, sizing, and duration controls into one node, allowing different H3 reference tasks to use the same accelerated generation pipeline.

• H3SigmaRefiner (#209). Adjusts the schedule to favor the parts of the trajectory where H3 benefits most. If you need crisper details at the same speed, add a little refinement; if you prioritize maximum throughput, keep it lean.

• SplitSigmas (#197). Splits the compact schedule into a two-pass plan. With an 8-step schedule, the midpoint split balances speed and quality; moving the split allocates more steps to either structure or detail.

• MiniMaxH3SigmaShift (#207). Offsets sigma ranges for video and audio so they converge cleanly under short schedules. Leave the provided shifts unchanged unless you understand their effect on synchronization and stability.

• LoraLoaderModelOnly (#167). Applies the LightX2V Turbo LoRA. Lower strength softens the Turbo effect for gentler motion; higher strength can increase snap but may over-accentuate textures.

• MinimaxH3LatentUpscaler3D (#226). Increases spatial detail between passes while keeping the audio latent intact. Use a modest mode.scale for 720p-type outputs or a larger multiplier for 1080p when VRAM allows.

• VHS_VideoCombine (#189). Handles final muxing and export. Adjust frame_rate, set a filename prefix, and optionally use trimming or ping-pong looping for previews.

Notes

MiniMax H3 8-Step Acceleration in ComfyUI | MiniMax H3 All In One - see RunComfy page for the latest node requirements.