Build a MiniMax H3 Max image-to-video prompt in linked parts: tell it what the uploaded image represents, describe the action and camera, set the visual treatment, then explain what sound should accompany the scene. That gives the model clear relationships to work from without treating a prompt format as a guarantee of a particular result.
How to structure the prompt
MiniMax’s H3 Max product page describes creating video from a text prompt or image, then reviewing and refining the result. The more detailed multimodal examples and technical specifications cited here are for MiniMax H3, not necessarily a one-to-one description of every H3 Max control. The structure below is a practical way to make your instructions explicit, not an official template or tested recipe.
- Assign the image a role. Say that the uploaded image is the opening visual reference, or otherwise explain what it should guide. Name the subject and the composition details that matter.
- Describe the action. Use observable verbs and explain how the scene changes. If it has stages, put them in order: for example, a person turns toward the window, then raises a hand.
- Direct the camera. Specify whether it stays still, tracks the subject, pans, tilts, or moves around them. Avoid conflicting directions such as asking for both a locked camera and a sweeping orbit.
- Set the visual treatment. State relevant style, lighting, and mood. Include only continuity details that matter, such as keeping a coat’s color or the scene’s time of day.
- Describe sound in context. Name the intended dialogue, ambience, sound effects, or music, and connect it to the visible action. For example, ask for footsteps to begin as the subject starts walking rather than simply saying “add sound.”
- Review and refine. Preview the generated clip. If something important is wrong, revise the relevant instruction; changing one priority at a time is a useful editing method, not a documented optimization guarantee.
A prompt template you can adapt
This suggested structure combines the documented image, video, and audio input modes; it is not wording published by MiniMax:
Use the uploaded image as the opening visual reference. Preserve [important subject or composition]. [Subject] [specific action] while the camera [specific movement]. The scene develops from [starting state] to [ending state], in a [style, lighting, mood] treatment. Sound: [dialogue, ambience, effects, or music], with [relationship to the action or visual timing].
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Replace each bracket with a concrete instruction. If a detail is unimportant, leave it out rather than adding constraints that compete with the main action.
How to refer to multiple reference assets
When a workflow accepts more than one reference, identify each asset by its role and state how it should influence the result. MiniMax’s 2026-07-31 H3 launch article illustrates this with: “Reference the Hitchcock camera movement from Video 1, have the character in Image 2 sing, with the vocals matching Audio 3.” The example shows how to connect references in natural language; it does not promise exact motion transfer, singing, or synchronization. MiniMax describes H3’s intended interaction model as describing “the relationship between the context and the target video in words.”
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Choose between frame control and multimodal references
MiniMax’s H3 release describes two relevant input approaches. FL2VA uses zero, one, or two images: no image for text-to-video, one image as a first or last frame, or two images as first and last frames. Ref2VA uses image, video, and audio references. Which approach is useful depends on whether a particular opening or ending frame matters or whether the clip needs to draw on multiple kinds of reference.
| Workflow | Reference inputs described for H3 | Useful when |
|---|---|---|
| FL2VA | Zero, one, or two images | You want text-to-video, a specified first or last frame, or both a first and last frame. |
| Ref2VA | Up to 9 images, 3 video clips, and 3 audio clips | You want the prompt to relate multiple visual and audio references. |
These are H3 release specifications, not confirmation that every control or limit appears in the current H3 Max interface. Check the available options in the product before planning around a particular input mode.
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H3 specifications that affect planning
MiniMax’s 2026-08-03 H3 open-source announcement lists video duration as 4–15 seconds, output at 24 FPS, and audio as 32 kHz stereo. It gives the default output resolution as 768 pixels on the shorter side, with 2K available through H3-Regenerate-2K. These are stated product specifications, not independent measurements of prompt quality.
For H3 Ref2VA, the same announcement allows up to nine images, three video clips, and three audio clips. Each video or audio clip must be 2–15 seconds, and the total duration for each of those modalities is limited to 15 seconds. Audio cannot be the only input; it must accompany image or video input. Confirm whether the H3 Max controls you are using expose the same options and limits.
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What a prompt can and cannot establish
A well-organized prompt makes your intent easier to interpret: what the image contributes, what changes, how the camera behaves, and how sound fits the scene. It cannot guarantee that every visual detail will remain unchanged or that audio will match action precisely. MiniMax’s examples demonstrate intended multimodal prompting, but they do not establish a success rate or guarantee specific results. Use the preview-and-refine workflow described on the H3 Max product page to judge the actual output.
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