Local Minimax H3 Workflow Generates Long Videos on 8GB Laptop VRAM
CupQuakeBE · reddit · 2026-08-28
A developer shared a complete workflow for generating a 10-minute experimental video entirely locally on a laptop with an RTX 3070 (8GB VRAM). The solution uses the Minimax H3 video model, ComfyUI, and a custom Python script.
Core Techniques:
- Uses LowVramAttention and Minimax Motion Context features to run on limited VRAM.
- A script automatically splits a text file into prompts, generating 15-second clips for each.
- Uses the last frame of a clip as the first frame of the next to maintain visual continuity.
- Automatically assembles the video and fixes audio/video stuttering.
The toolchain is open-sourced on GitHub, allowing users to adjust steps and resolution based on their hardware, theoretically supporting unlimited video length generation.
Related event: Developers Optimize Minimax H3 Video Generation on Consumer GPUs(2 posts)→
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