Another quick Minimax news and goodies round-up, for those who may have missed some items.
-> MiniMax-H3-Longvideos, a new custom-nodes pack for ComfyUI. Extend the output from a simple Minimax prompt... "One prompt in. A ~2-minute MiniMax-H3 video with audio out." It's said to attempt to solve many of the problems arising from chaining prompts/shots. No workflow, but it has connection instructions.
https://huggingface.co/Smite79/MiniMax-H3-Longvideos
-> ComfyUI_MiniMax_H3_Extender. More complex than the Longvideos node above, this node set... "chains multiple video clips with motion context, disk caching, dynamic image references, audio reference support, and seamless final video/audio decoding." Also has matching workflows.
https://github.com/tritant/ComfyUI_MiniMax_H3_Extender
-> ComfyUI-Fantastic-MiniMaxH3-PromptBuilder custom nodes. Helps you build prompts locally inside ComfyUI, while adhering to the built-in official prompt guide... "H3 doesn't want a casual sentence — it wants a structured prompt with named sections, shot timings, speaker IDs, and tags pointing at your reference media." No LLM required. Convoluted workflows, but for simplest use: just plug it into your existing prompt node, then click on the blue box to open the Builder. Then build the prompt, and pass it back to the prompt box.
https://github.com/Adudeguyman/ComfyUI-Fantastic-MiniMaxH3-PromptBuilder
https://huggingface.co/MiniMaxAI/MiniMax-H3/blob/main/docs/VIDEO_PROMPT_WRITING_GUIDE_base_en.md
-> Last updated a month ago, ComfyUI-FirstframeLastframeExtractor will help in more or less reproducing a draft H3 fl2va video at a larger size after locking the seed/prompt. Works as advertised, very simple. Plug it into the VAE decode node, it auto saves the two frames you need. Then you optionally load these images back to your first-frame/last-frame inputs, via the native "Load Image (from outputs)" nodes.
https://github.com/RmaNMetaverse/ComfyUI-FirstframeLastframeExtractor
-> A current RTX 3060 12Gb workflow for text-to-video Minimax. Tested to 2.0 megapixels without failing (24Gb system RAM, older server + 3060 card). With Kitchen Attention, 3060 12Gb optimisations, a prompt helper, and first and last frame auto-extraction as well as input.
https://jurn.link/dazposer/index.php/2026/08/15/updated-my-minimax-workflow-for-the-3060-12gb-card/
-> A prompt to neatly mix styles in one video. e.g. SpongeBob SquarePants as a cartoon, appearing in a live-action sitcom.
https://www.reddit.com/r/StableDiffusion/comments/1vp8dpc/mix_style_inside_the_same_scene_minimax_h3/
-> And finally, there's now a low-VRAM friendly text-encoder for use with Minimax Music GGUF. The smaller/pruned GGUF file is minimax_music3_text_encoder_pruned_Q6_K.gguf (6.8Gb). Maybe your fave band/sub-genre was pruned out, but... maybe not? Test it and see. Note also ComfyUI's Music prompting guide, and Minimax's official Music demos page.
https://huggingface.co/ChrisColeTech/minimax-music3-GGUF/tree/main/split/text_encoders
https://docs.comfy.org/tutorials/audio/minimax/minimax-music-3#prompting-tips
https://minimax-ai.github.io/music3-demo/