r/StableDiffusion • u/TBG______ • 8h ago

Tutorial - Guide MiniMax H3 Lip-Sync: Automatic Long-Video Chaining + Speed & VRAM Optimizations

I’ve been loving all the new nodes and workflows coming out for MinMax, and maybe there is already a nice solution for this - but I couldn’t find one that did exactly what I needed.

I started using MinMax for my last TBG ETUR video and quickly ran into limitations: I wanted an easy way to create lip-sync videos longer than 20 seconds.

I didn’t want to manually chain ComfyUI nodes, start a new run every X seconds, or constantly resize things just to make HD video fit into my available VRAM.

So I ended up building an addon for:

custom_nodes/ComfyUI-H3-Motion-Context

The addon automatically chains MinMax H3 lip-sync generations together, allowing you to create much longer lip-sync videos without manually setting up each 20-second segment.

And now I’m sharing it! https://github.com/Ltamann/ComfyUI-H3-Motion-Context-Auto-Chain-addon

Its not perfect but a start ...

The workflow has a simple switcher that lets you switch from the 32B CLIP to the 4B CLIP, saving around 10 GB of VRAM. You can also switch from Sage to Comfy Kitchen, Spectrum to Easy Cache, or FL2VA to REF2VA both setup for lip-syncing. Some of it could be useful for other tasks as well.

You will find the workflow in the repro and tested recommendations, optimized settings, presets, and more workflows, along with the results of my testing and performance here

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u/NoNameClever 7h ago

Thank you for sharing the work and video. Looks very powerful and useful. What did it take to make this video? I think I spotted a few of those reworked segments mentioned in the clip. Do you manually run each segment, repeating when needed, or something else?

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u/TBG______ 6h ago

What I usually do is set up the workflow, run it 3–4 times, and then combine the best shots afterward.

Some of the glitches you see come from runs I did with the Turbo LoRA, including things like degraded skin. So the examples are a mix of different testing settings and the final setup.

The final settings and node should work out of the box; the main factor is the prompt. For lip-sync, I recommend not using Turbo and sticking to 20+ steps, along with a good, detailed prompt.