comfyui-workflows/models/minimax/minimax-h3-longvideos-smite79/README.md

MiniMax H3 LongVideos

Summary

Same-day MiniMax H3 long-video workflow with synced audio and shot chaining.

Model Family

• minimax

Status

• imported-only

Source

• Model card: https://huggingface.co/Smite79/MiniMax-H3-Longvideos
• Workflow file: https://huggingface.co/Smite79/MiniMax-H3-Longvideos/resolve/main/workflows/H3%20LongVideos%20Demo%20Workflow.json?download=true
• Original publisher: Smite79
• Date imported: 2026-09-07

Developer notes

• The workflow is built around the H3 LongVideos node pack.
• It turns a paragraph-by-paragraph prompt into chained shots and supports plan_only for a non-rendering split check.
• The source README expects ComfyUI 0.31+ with native MiniMax-H3 support.

Our notes

• This is the most immediately useful MiniMax H3 import today because it packages the long-form, audio-synced path instead of a bare checkpoint.
• The default settings are already aimed at practical use: 8 steps, res_multistep, shift_video/shift_audio at 12/3, and shot chaining.
• Still heavy for an RTX 3070 with 8 GB VRAM, but this is the right kind of heavy if you want a real H3 workflow.

Required custom nodes

• Smite79/MiniMax-H3-LongVideos
• current ComfyUI MiniMax-H3 support
• pysssss for the text output panels

Required models

• MiniMax-H3 diffusion model
• MiniMax-H3 text encoder
• MiniMax-H3 video VAE
• MiniMax-H3 audio VAE
• optional MiniMax-H3 PDD Acc LoRA for the low-step path

Notes

• Best first try if you want a reusable local MiniMax H3 workflow rather than another checkpoint.