MiniMax H3 Text-to-Video Generator Guide
Learn how to write MiniMax H3 text-to-video prompts for cinematic 2K clips with native stereo audio, multiple durations, and six aspect ratios.
What Text-to-Video Does
MiniMax H3 turns a written scene direction into a finished video. A useful prompt describes what appears in the frame, how it moves, how the camera behaves, the lighting, the pacing, and the intended sound. This site currently supports 5, 10, and 15-second generations at six aspect ratios.
A Reliable Prompt Structure
Write prompts in this order:
- Subject: who or what the viewer should notice first.
- Action: one clear movement that can develop during the clip.
- Environment: location, time of day, weather, and important background details.
- Camera: framing, lens feeling, and camera movement.
- Light and color: the visual mood and palette.
- Sound: ambience, effects, dialogue, or music direction.
Example: A red fox crosses a snow-covered railway at blue hour, low tracking shot, soft falling snow, cool cyan shadows, distant wind and quiet footsteps.
Choosing Duration
- 5 seconds: one action, product detail, reaction, or visual test.
- 10 seconds: a short camera move or a simple beginning-to-end action.
- 15 seconds: a scene with two connected beats, such as approach and reveal.
Longer clips are not automatically better. A focused five-second prompt often produces a more coherent result than a crowded fifteen-second prompt.
A Step-by-Step Text-to-Video Workflow
Start by writing the shot as one sentence: subject, action, setting, and camera. Generate a five-second draft and watch it from beginning to end. If the subject is unclear, simplify the action before changing the style. If the framing is wrong, revise only the camera instruction. Once the movement works, add lighting and sound, then consider extending the duration.
This order makes each retry useful because you can tell which change affected the result. Rewriting the subject, camera, color, audio, and duration at the same time makes it difficult to preserve what already worked.
For a reusable structure and more examples, see the MiniMax H3 prompt guide. If you already have a starting frame, use the image-to-video workflow instead.
Troubleshooting Weak Results
The subject changes appearance
Reduce scene changes and competing actions. Describe one identifying feature that must remain visible, keep the camera move simple, and avoid asking the subject to enter several different environments during one short clip.
The camera behaves unpredictably
Use one primary camera instruction. “Locked camera” or “slow push-in” is clearer than combining a zoom, orbit, crane move, and handheld shake. Also state the framing—close-up, medium shot, or wide shot—before the movement.
The clip feels busy or unfinished
Match the number of events to the duration. A five-second clip should normally contain one readable action. For 10 or 15 seconds, describe two connected beats in order rather than several unrelated moments.
Before You Generate
Choose an aspect ratio for the final destination, not just the preview. Use 16:9 for landscape video, 9:16 for short-form vertical platforms, 1:1 for square placements, and 21:9 for a cinematic widescreen composition. Review the displayed credit cost before submitting.
Privacy and Failed Tasks
Generations are attached to your signed-in workspace and are not automatically published. If a provider task fails or is rejected, the reserved credits are restored automatically. Completed and failed tasks remain available in Generation History.
MiniMax H3 Video is an independent service and is not affiliated with or endorsed by MiniMax.
Frequently Asked Questions
Do I need a long prompt?
No. A compact prompt with a clear subject, action, camera direction, and sound is usually more useful than a long list of adjectives. Add detail only when it changes something visible or audible.
Should I write prompts in English?
Use the language in which you can describe the scene most precisely. Keep camera terms, names, and spoken lines consistent within the prompt, and check the first output before adding more detail.
Can I generate vertical text-to-video clips?
Yes. Select 9:16 before generating and describe a composition that uses vertical space. The AI video aspect-ratio guide explains when each supported format is useful.
Final Check Before Submission
Confirm the target duration and aspect ratio, remove contradictory instructions, and make sure the main action can fit inside the clip. The generator displays the credit cost before you submit, so you can review the request without spending credits.
H3 Max
Want faster generation?
Use lower-credit H3 Max to test ideas quickly, then move the best version to MiniMax H3 2K.
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