Most video workflows stop at 10–15 seconds. H3MD Director is a free, open-source ComfyUI node pack that renders 2–3 minute videos with MiniMax H3 in one run — one continuous take, or a sequence of planned shots.
What it does
• Long takes: each segment continues from the last 1.6 s of the previous one (latent overlap), so motion and camera carry on with no cut
• Hard cuts: a new shot can start fresh from its own reference images, with no accumulated drift
• Drift control: color/contrast stats are pinned back to the first segment, so faces don't age and colors don't blow out
• Director panel: plan shots, lengths, prompts, reference images and locked audio per shot
• Motion transfer (depth + SAM3), music videos with lip-sync, text-to-video
• 1080P for long videos, 2K for single 15 s clips; low-VRAM / tiled options included
Install
1. ComfyUI Manager → search "H3MD Director" (or clone the GitHub repo into custom_nodes)
2. ComfyUI 0.43+ (native MiniMax H3)
3. Drag the workflow from this zip into ComfyUI
GitHub (docs, models, prompt guide): https://github.com/1113800942/comfy-h3md-director
Showcase video: https://youtu.be/plDxnModffs
Run it online (no GPU needed)
RunningHub — cloud ComfyUI with an infinite canvas, agent tools and ready-made workflows: https://www.runninghub.ai?inviteCode=aolwbd1n
(Referral link: sign up through it and you get 500 RH coins free, enough for quite a few images and videos. It also supports this project.)
Built on ideas and work from Luna, Niko, Marker, LBH-123-AI, Kijai, T8 and others — thank you.
License: AGPL-3.0 with attribution.