VELVET VICE MiniMax H3 — Live Preview Display

Some nodes do heavy lifting. Some nodes are a status light. VelvetViceMiniMaxH3LivePreviewDisplay is a status light: zero inputs, zero outputs, and when you run it, it reports back VELVET VICE H3 LIVE PREVIEW READY to the UI. That's the whole job, and it's worth a moment to understand why such a node exists at all, because it's not as empty as it looks.

It's an output node from the velvet-vice-minimax-h3 pack's live-preview family. The actual preview machinery lives in the sampler-wrapping LivePreview / LivePreviewBridge nodes; this display node is the frontend-facing counterpart that confirms the preview pipeline is installed and armed. Think of it as the "all systems go" lamp on an instrument panel - it doesn't steer anything, but it tells you the wiring is present and the preview JS is loaded.

Why you'd see this and not just a preview

Live preview in ComfyUI isn't purely a backend affair - the frontend has to know how to render the frames the sampler streams. The pack ships custom JavaScript (minimax_h3_live_preview.js and friends) to do that, and the preview tiers hook into ComfyUI's standard preview channels. The display node exists as an execution-time anchor: when it runs and reports READY, it's confirmation that the preview path is reachable from the current graph rather than silently absent.

In practical terms this node is most useful as a debugging oracle. If your graph renders but no preview ever appears, running this node tells you whether the problem is the preview pipeline itself (node reports an error or nothing) or something downstream in how you're watching. It's also a convenient marker node: because it's an output node that does nothing else, you can drop it anywhere and run it to tick the "preview is set up" box on your mental checklist.

Inputs and outputs

None. It's an output node (marked OUTPUT_NODE), so it executes and reports to the UI without producing values for other nodes.

Install

Ships with the pack:

cd ComfyUI/custom_nodes
git clone https://github.com/Velvet-Vice/velvet-vice-minimax-h3

then restart. Since this is the terminal status node in the preview family, also make sure the optional TAEHV decoder is in place if you intend MEDIUM-tier previews:

models/vae_approx/taeh3_decoder.safetensors

An honest note so you don't over-invest: a READY status confirms the preview path is armed, not that previews will be beautiful. The actual fidelity is set by the preview node's quality tier, and the render's final quality is untouched by any of this - previews are a window, not the product. If you never hand-build graphs and only run the reference workflow, you may never need to interact with this node at all. It's there when the lamp matters.