<h3>What it does</h3><p>MiniMax H3 writes the picture and the sound <strong>at the same time, from the same prompt</strong>, on your own machine. No separate music step. No voice tool. No editing the two together afterwards. You type a scene, you get a clip that already has its own audio.</p><div data-youtube-video><iframe width="640" height="480" allowfullscreen="true" autoplay="false" disablekbcontrols="false" enableiframeapi="false" endtime="0" ivloadpolicy="0" loop="false" modestbranding="false" origin playlist src="https://www.youtube.com/embed/OdeRWhBL6cw" start="0"></iframe></div><h3>What you need</h3><p>Four files, about 42 GB in total, all free from the official Comfy-Org MiniMax-H3 repository on Hugging Face. Every filename below is a direct download link.</p><ul><li><a target="_blank" rel="ugc" href="https://huggingface.co/Comfy-Org/MiniMax-H3/resolve/main/diffusion_models/minimax_h3_fl2va_pruned_int8_convrot.safetensors">minimax_h3_fl2va_pruned_int8_convrot.safetensors</a> 21 GB, into <code>ComfyUI/models/diffusion_models/</code></li><li><a target="_blank" rel="ugc" href="https://huggingface.co/Comfy-Org/MiniMax-H3/resolve/main/text_encoders/qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors">qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors</a> 15.7 GB, into <code>ComfyUI/models/text_encoders/</code></li><li><a target="_blank" rel="ugc" href="https://huggingface.co/Comfy-Org/MiniMax-H3/resolve/main/vae/minimax_h3_video_vae_fp16.safetensors">minimax_h3_video_vae_fp16.safetensors</a> 5.2 GB, into <code>ComfyUI/models/vae/</code></li><li><a target="_blank" rel="ugc" href="https://huggingface.co/Comfy-Org/MiniMax-H3/resolve/main/vae/minimax_h3_audio_vae_fp32.safetensors">minimax_h3_audio_vae_fp32.safetensors</a> 0.6 GB, into <code>ComfyUI/models/vae/</code></li></ul><p>The folder is the part people get wrong. A file in the wrong folder looks exactly like a missing model, and ComfyUI will not tell you which one it is.</p><p>No custom node packs. Everything in this file ships with ComfyUI.</p><p>You also need ComfyUI 0.30 or newer, and a card with 24 GB or more. Under that it will be slow and it may not run at all. Better to know now than after 42 GB of downloading.</p><h3>How to use it</h3><ol><li>Put the four files in their folders. Restart ComfyUI.</li><li>Drag <code>stableyogi-minimax-h3-text-to-video.json</code> onto the canvas.</li><li>Write your scene. Describe the picture <strong>and the sound</strong>, so rain on a roof, a car going past, a voice. It listens to sound words.</li><li>Press Run.</li></ol><p>The clip lands in <code>ComfyUI/output/video/</code>.</p><h3>The thing that catches everybody</h3><p>Frame count is not free-form. H3 takes <strong>17 times something, plus five</strong>:</p><ul><li><strong>73 frames</strong> is about 3 seconds</li><li><strong>124 frames</strong> is about 5 seconds</li><li><strong>192 frames</strong> is about 8 seconds</li><li><strong>277 frames</strong> is about 11.5 seconds</li></ul><h3>Three more H3 workflows, all free</h3><ul><li><strong>Picture to video</strong>, start from a still you already made</li><li><strong>Turbo</strong>, the same clips in 8 steps instead of 20. One extra 1.9 GB file, nothing else changes</li><li><strong>Reference to video</strong>, give it pictures of a person and describe a scene they are not in</li></ul><p>Written guides, free to read, no account needed: <a target="_blank" rel="ugc" href="https://forgebun.com/go/civit_h3_workflows">text to video and picture to video, explained</a>, and <a target="_blank" rel="ugc" href="https://forgebun.com/go/civit_h3_turbo_ref">turbo and reference to video, with the measured numbers</a>.</p><h3>There is a Pro version</h3><p>Not another download. One file carrying every H3 mode on switches, with the speed settings already set the way the testing said to set them, including one that is switched <strong>off</strong> on purpose because turning it on cost fifteen seconds a clip here.</p><p>It comes with Pro membership, and you get it by <strong>finishing the MiniMax H3 course</strong>, six lessons, every workflow in this set explained node by node. The file unlocks on the last one. <a target="_blank" rel="ugc" href="https://forgebun.com/go/civit_sy_pro">What Pro includes</a>.</p>

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