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How to Structure MiniMax H3 Max Image-to-Video Prompts with Sound

By Freedom251 Team · · 4 min read

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Write the prompt as connected instructions: tell MiniMax what role the uploaded image plays, what the subject does, how the camera moves, how the scene should look, and what sound should accompany it. Then generate a preview and refine the prompt around one priority at a time. This is a practical structure—not a guaranteed formula for a particular result.

Start by assigning the image a role

Say explicitly that the uploaded image is the opening visual reference or starting frame. Identify the subject and the parts of the composition that should remain important, such as the person, product, setting, or framing. This gives the prompt a clear visual anchor instead of leaving the model to infer what the image is meant to contribute.

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MiniMax’s H3 documentation describes image-to-video and multimodal reference workflows. H3 Max’s product page also describes making video from a prompt or an image. Those pages establish the available product concepts, but the technical details for H3 should not be assumed to describe every control in the H3 Max interface. MiniMax H3 specifications · MiniMax H3 Max product page.

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Describe the action and how the scene develops

Use concrete verbs to state what changes during the clip. If the action has stages, put them in a simple order: for example, “the subject looks toward the window, stands, then walks out of frame.” Include a starting and ending state when that transition matters. Avoid stacking unrelated events into one instruction; a focused action is easier to interpret than a list of competing possibilities.

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Give the camera a specific job

State whether the camera holds still, pans, tilts, tracks the subject, or moves around it. Tie that movement to the action: “the camera tracks beside the cyclist” is more specific than “cinematic camera.” If you want a static composition, say so. MiniMax’s H3 launch article illustrates role-based instructions by referring to camera movement from a video reference alongside a character in an image and vocals from an audio reference. That example shows how to describe relationships between inputs; it is not a promise of exact motion transfer or synchronization. MiniMax Research’s H3 launch article.

Specify the look without losing visual continuity

Name the visual treatment that matters: style, lighting, and mood. Keep those directions compatible with the source image if continuity is important. For instance, specify “soft overcast light, muted colors, restrained documentary feel” rather than asking for a dramatic visual transformation while also demanding that the original look remain unchanged.

It can help to state which elements should stay consistent, such as the subject’s clothing, the product’s shape, or the scene’s color palette. Treat these as instructions, not assurances: the cited product materials do not establish that every image detail will be preserved in every generated clip.

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Make sound part of the scene

Do not stop at “add sound.” Name the sound you want—dialogue, ambience, effects, music, or a combination—and explain how it relates to the visible action. For example, ask for footsteps to begin as the subject walks, or for quiet room ambience to continue under a spoken line. If you provide an audio reference, state what it should guide; MiniMax’s official example explicitly connects vocals to an audio input.

MiniMax’s 2026 H3 open-source announcement specifies generated audio at 32 kHz stereo. That is a product specification, not an independent assessment of sound quality or a guarantee of dialogue clarity. The announcement says H3 supports stable dialogue in Arabic, Chinese, English, French, German, Italian, Japanese, Korean, Portuguese, Russian, and Spanish; it says support for other languages varies. These H3 details should not automatically be read as a complete statement of H3 Max interface behavior. MiniMax’s H3 release and specifications.

A practical prompt structure

The following is an adaptable structure based on the documented input modes and MiniMax’s example, not a verbatim official template:

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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], [how it relates to the action or its timing].

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Replace the bracketed text with details that matter to this clip. If you have an audio or video reference and the interface offers it, identify its role plainly rather than assuming the model will infer how it should be used.

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Choose the kind of control your scene needs

MiniMax’s H3 release distinguishes between frame-led generation and multimodal reference generation. The distinction can help you think about your prompt, although whether a specific control is available in H3 Max depends on the current product interface.

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Workflow Documented input Useful when
FL2VA (first/last-frame-to-video) Zero images for text-to-video; one image for first-frame-to-video or last-frame-to-video; two images for first-and-last-frame-to-video. (MiniMax H3 release) You want to anchor an opening frame, an ending frame, or both.
Ref2VA (reference-to-video-and-audio) Up to 9 images, 3 video clips, and 3 audio clips. Each video and audio clip must be 2–15 seconds; each modality’s total duration is limited to 15 seconds. Audio cannot be the only input and must accompany image or video input. (MiniMax H3 release) You want to describe how reference images, motion, or audio relate to the generated result.

These are H3 release specifications, not independent measurements of output quality. MiniMax lists H3 output duration as 4–15 seconds, frame rate as 24 FPS, and resolution as 768 pixels on the shorter side by default, with 2K output available through H3-Regenerate-2K. Check the controls exposed in H3 Max rather than assuming these H3 specifications map directly to its settings. MiniMax’s H3 release.

Preview, then refine one priority at a time

H3 Max’s product page describes a workflow of generating, reviewing, and refining results. If a preview misses the mark, identify the most important gap—action, camera, visual treatment, or sound—and make the next instruction more specific about that point. Changing one priority at a time is a practical editing approach, not a MiniMax-tested optimization or guarantee. MiniMax H3 Max.

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AI audioAI videoimage to videoMinimaxprompt writing

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