<h2 id="support">Support</h2>Everything here is free and stays free — the format spec, the nodes, the workflows, the cartridges, the LoRAs. If it saved you a night of debugging (it contains several hundred of mine), tips keep the 5090 warm:<ul><li>☕ <a target="_blank" rel="ugc" href="https://ko-fi.com/joeygambino">Buy me a coffee on Ko-fi</a></li><li>💛 <a target="_blank" rel="ugc" href="https://github.com/sponsors/jlucasmcrell">Sponsor on GitHub</a></li><li>🔁 <a target="_blank" rel="ugc" href="https://liberapay.com/joeygambino">Liberapay</a> (recurring)</li><li>⚡ Or right here: the Civitai tip button on this page sends Buzz directly.</li></ul>Chain MiniMax-H3 shots into one continuous video with audio — in one node. Write one prompt per shot, put <code>---</code> between them, pick a shot count, queue. Each shot generates forward from the last frame of the previous one; the duplicated seam frame and its 1/24s of audio are trimmed automatically, so the master comes out clean with continuous sound.The demo video on this page was made by the workflow it demonstrates: 30 seconds, three chained shots from one script, same presenter and same voice across both seams, rendered on the 25.9 GB Q5_1 GGUF on a single consumer GPU.A word on expectations. MiniMax-H3 is a 33B joint audio+video model and this pack shipped days after the weights did. It works — the demo is proof — but day-0 territory means your first clean render may take tuning to YOUR machine. If you get stuck, comment here or open a GitHub issue — I answer.<h2 id="quick-fixes-read-this-first">Quick fixes — read this first</h2><ul><li>Red / missing nodes when the workflow loads Why: The pack isn't installed, or ComfyUI wasn't restarted after installing. Fix: Install <a target="_blank" rel="ugc" href="https://github.com/jlucasmcrell/ComfyUI-H3-Multishot">ComfyUI-H3-Multishot</a> (Manager &gt; Install via Git URL works), restart, then hard-refresh the browser tab — the frontend caches node definitions.</li><li>GGUF model errors with “unknown model architecture” Why: ComfyUI-GGUF doesn't know MiniMax-H3 out of the box. Fix: Run <code>python apply_gguf_arch_patch.py</code> from the pack folder (one line, idempotent), restart. Needs <a target="_blank" rel="ugc" href="https://github.com/city96/ComfyUI-GGUF">ComfyUI-GGUF</a> installed.</li><li>The queue stops with a JSON error about the script Why: Your script starts with <code>{</code> but isn't valid JSON — usually a doubled brace or a missing comma. The node stops on purpose instead of rendering the raw text for ten minutes. Fix: Fix the JSON, or skip JSON entirely: plain prompts separated by <code>---</code> lines.</li><li>Length change errors out Why: H3 hard constraint — frame counts live on a 17k+5 grid. Fix: Use 226, 243, 260… <code>frames_per_shot</code> steps by 17 so the widget keeps you legal. 243 is ~10s; 362 (~15s) is the trained max per shot.</li><li>Speech turns to gibberish late in a long shot Why: Past ~15s per shot you are outside the trained range; picture generalizes further than speech does. Fix: Keep scripted dialogue inside each shot's first ~15s, or use more, shorter shots — that is what the chaining is for.</li><li>An object morphs into something else at a seam Why: The chain hands each shot the previous final frame. If shot 1 ends showing the cameraman holding his camcorder and shot 2 is filmed FROM that camcorder, the model must explain a device in a hand that shouldn't be in frame — and it will invent something. Fix: End every shot on what the NEXT shot expects to see. Match the bridge frame to the next shot's framing and the seams disappear.</li><li>Out of VRAM, or renders crawl Why: 33B of weights. Fix: Use the GGUFs — Q5_1 for 24-32 GB cards, Q4_0 for 16 GB. The file does not need to fit in VRAM; ComfyUI streams the overflow. Expect ~10 min per 10s shot on a 5090-class card.</li></ul><h2 id="what-you-get">What you get</h2><pre><code>SCRIPT (one prompt per shot, --- between)
 -&gt; SHOT 1 -&gt; [last frame] -&gt; SHOT 2 -&gt; [last frame] -&gt; SHOT 3 ...
 -&gt; seam-trimmed MASTER (video + continuous audio)</code></pre><ul><li>H3 Multishot Sampler — the whole pipeline in one node. <code>shot_count</code> is real: 0 = one shot per prompt, N = exactly N shots render, nothing wasted.</li><li>H3 Model Loader — one dropdown for <code>.safetensors</code> and <code>.gguf</code>, routed automatically.</li><li>H3_Multishot_AIO.json — easy mode: loaders &gt; script &gt; sampler &gt; save. Eight nodes.</li><li>H3_Multishot_3chain_expert.json — the same pipeline exploded into three visible chains for per-stage tinkering.</li></ul><h2 id="what-you-need">What you need</h2><ul><li>ComfyUI v0.30.0+ (native MiniMax H3 support)</li><li>The node pack: <a target="_blank" rel="ugc" href="https://github.com/jlucasmcrell/ComfyUI-H3-Multishot">ComfyUI-H3-Multishot</a></li><li>Weights: <a target="_blank" rel="ugc" href="https://huggingface.co/joeygambino/MiniMax-H3-GGUF">MiniMax-H3 GGUF</a> (Q5_1 / Q4_0, both DiT flavors) — or the originals</li><li>Text encoder + VAEs from <a target="_blank" rel="ugc" href="https://huggingface.co/Comfy-Org/MiniMax-H3">Comfy-Org/MiniMax-H3</a></li><li>For GGUF: <a target="_blank" rel="ugc" href="https://github.com/city96/ComfyUI-GGUF">ComfyUI-GGUF</a> + the included one-line patch</li></ul><h2 id="two-settings-worth-knowing">Two settings worth knowing</h2><ul><li>shot_count is the real thing here: extra script prompts drop (loudly, in the console), missing ones continue the last prompt as a hold.</li><li>frames_per_shot rides H3's 17k+5 grid. 243 ≈ 10s. 362 ≈ 15s is the trained ceiling — beyond renders, but speech frays first.</li></ul><h2 id="everything-else-i've-published">Everything else I've published</h2><ul><li><a target="_blank" rel="ugc" href="https://huggingface.co/joeygambino">All models on Hugging Face</a></li><li><a target="_blank" rel="ugc" href="https://huggingface.co/joeygambino/MiniMax-H3-Multishot-Workflow">This workflow on Hugging Face</a></li><li><a target="_blank" rel="ugc" href="https://github.com/jlucasmcrell/ComfyUI-H3-Multishot">Node pack source on GitHub</a></li></ul>

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