joeygambino/MiniMax-H3-Multishot-Workflow

MiniMax-H3 Multishot Workflow

v1.4 — sampler_name and scheduler are now widgets on both multishot samplers (defaults res_multistep / simple, exactly the values previously hardcoded, so existing workflows render identically). The bundled workflows are relabelled: every node carries a descriptive title. Node pack: ComfyUI-H3-Multishot v1.4.

Chain multiple MiniMax-H3 shots into one continuous video with audio - in one node. Each shot starts from the last frame of the previous one; the duplicated seam frame and its 1/24s of audio are trimmed automatically.

The demo below was made by this workflow: 30 seconds, three chained shots from one script, same presenter and same voice across both seams, rendered on the Q5_1 GGUF.

Files

• H3_Multishot_AIO.json - easy mode: loaders > script box > one sampler node > save. Write one prompt per shot with --- between them, pick a shot count (0 = one shot per prompt, 1-8 forces it), queue.
• H3_Multishot_3chain_expert.json - the same pipeline exploded into three visible shot chains for per-stage tinkering.

Requirements

• ComfyUI v0.30.0+ (native MiniMax H3 support)
• The node pack: ComfyUI-H3-Multishot (Manager > Install via Git URL; includes the one-line ComfyUI-GGUF architecture patch)
• Models: MiniMax-H3 GGUF quants (Q5_1 for 24-32 GB cards, Q4_0 for 16 GB) or the originals; text encoder + VAEs from Comfy-Org/MiniMax-H3

Notes

• frames_per_shot sits on H3's 17k+5 frame grid (243 = ~10.1s at 24 fps; 362 = ~15.1s, the trained max).
• End every shot on what the NEXT shot expects to see - the chain hands each shot the previous final frame, and matching that bridge to the next shot's framing is what makes seams invisible.
• Malformed JSON scripts fail loudly instead of rendering the raw text.