
MiniMax H3 Developer Reference-to-Video API by MiniMax
MiniMax H3-Developer self-hosted reference-to-video: generate a video that keeps the subject from one or more reference images/videos, driven by a text prompt, with generated audio. Supports 480P768P/2K.
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MiniMax H3-Developer Reference-to-Video
MiniMax H3-Developer Reference-to-Video keeps a subject consistent тАФ with sound. Provide one or more reference materials (images and/or videos of a person, animal, or object) plus a prompt. Generate native 480P or 768P video, or select an ESR tier to enhance the output to a 1080P, 1440P, or 4K short edge while preserving the referenced subject's identity, complete with a synchronized soundtrack generated from the described scene.
Why Choose This?
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Subject-consistent generation Keep the referenced subject's identity across the whole shot.
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Multi-modal references Drive generation with images and/or videos in a single request.
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Native audio A matching soundtrack is generated alongside the video тАФ no separate audio input needed.
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Enhanced resolution output Generate native 480P or 768P video, or use ESR for a 1080P, 1440P, or 4K short edge.
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Selectable duration Produce 5тАУ15s clips.
Parameters
| Parameter | Required | Description |
|---|---|---|
| prompt | No | Text description of the desired video while keeping the referenced subject's identity |
| refers | Yes | Array of reference materials. Each item is an object { "url": string, "type": "image" | "video" | "audio" }. type is inferred from the URL extension when omitted. At least one image or video is required; audio alone is rejected |
| resolution | No | Video resolution. Available options: 768P (default), 480P, 1080p-esr, 1440p-esr, 4k-esr. ESR tiers generate a native 768P source and enhance the output to the requested short edge. |
| duration | No | Duration of the generated video in seconds. Integer between 5 and 15 (default 5) |
| prompt_expansion | No | Enable AI prompt expansion via H3 Context-IR. When true, your prompt is first expanded into a rich, structured description (shot, soundscape, music) before generation, and an additional per-token Context-IR fee applies. Default false: the prompt is used as-is with no extra charge. |
How to Use
- Add your reference materials тАФ pass one or more
refersentries (image and/or video URLs). - Write your prompt тАФ describe the desired scene, action, and sound while keeping the subject.
- Set resolution and duration тАФ balance quality against generation speed.
- (Optional) Tune seed and steps тАФ fix the seed for reproducibility, raise steps for quality.
- Run тАФ submit and download your video.
Best Use Cases
- Character Consistency тАФ Keep the same character across multiple shots.
- Product Showcases тАФ Feature a specific product while varying the scene.
- Brand & IP тАФ Reuse a mascot or signature subject in new content.
- Storytelling тАФ Build a narrative around a consistent subject, with matching sound.
Pro Tips
- Use clear, high-quality reference images or videos of the subject.
- Provide at least one image or video reference; audio-only requests are rejected.
- Describe the scene's audio (traffic, music, crowd) to shape the generated soundtrack.
- Keep the prompt focused on the scene and action; the subject's identity comes from the references.
Notes
- At least one image or video reference is required.
- The prompt is optional but strongly recommended.
- ESR tiers add an enhancement stage after native generation and may take longer than native resolutions.
- Ensure all reference URLs are publicly accessible.
- Generation is asynchronous тАФ submit, then poll for the finished video.
Related Models
- MiniMax H3-Sol Text-to-Video тАФ Generate video directly from a text prompt.
- MiniMax H3-Sol Image-to-Video тАФ Animate a first-frame image into a video.


















