ComfyUI MiniMax H3 Director Enables Precise Video Editing Through Segment Control 🔗
Workflows allow frame-accurate generation and modification using reference images and audio cues
The huangserva/ComfyUI_MiniMaxH3_Director project provides five ready-to-import ComfyUI workflows for MiniMax H3 video generation, covering text-to-video, image-to-video, and advanced editing modes like reference-based video generation and video-to-video transformation. Built atop AIMixer’s upstream director node, it lets users generate video in 5-second segments, inspect outputs for facial consistency, clothing, motion, and shot boundaries, then decide whether to extend—without re-running the entire timeline.
Each workflow supports granular control: users upload source videos, split them by scene or via smart segmentation, attach reference images for identity guidance, and optionally add reference audio for speech or sound constraints. Prompts are written per segment, with source frames bound to and reference materials to. The system uses end-frame-to-start-frame handoff between segments for temporal coherence, though it does not replace dedicated identity consistency checks.
Audio can be model-generated, sourced from original video, or muted. After installing SageAttention, users can patch the UNETLoader-to-MiniMaxH3Director model input path to test speed gains—first verifying output quality remains unchanged. Workflows require ComfyUI 0.30.0+, PyTorch 2.11.0, CUDA 12.8, and the MiniMax H3 Ref2VA INT8 weight; T2V, I2V, and FL2V modes need additional FL2VA weights. All components are Apache-2.0 licensed, excluding model weights which follow their own terms.
The catch: Current validation is limited to NVIDIA RTX 4090 48GB setups; broader hardware compatibility and multi-GPU scaling remain untested, posing a barrier for developers without access to high-end consumer GPUs.
- Video editors refining AI-generated clips with reference-guided segment edits
- Animators creating consistent character videos using image and audio cues
- Researchers testing temporal control in diffusion-based video models
Source: huangserva/ComfyUI_MiniMaxH3_Director — based on the project README.