MiniMax H3 AI Text to Video Generator
MiniMax H3 turns a detailed written prompt into a short AI video on Story321. Choose a 5-15 second duration, start at 768P by default, then select 2K or 4K and a frame that suits the finished placement.
MiniMax H3 turns a detailed written prompt into a short AI video on Story321. Choose a 5-15 second duration, start at 768P by default, then select 2K or 4K and a frame that suits the finished placement.
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How to Prompt MiniMax H3
Start with a subject and a clear goal
Name one person, object, or place, then state what the viewer should notice. A single visual priority makes the brief easier to review.
Describe motion and its timing
Tell MiniMax H3 what moves and when the action changes. Give a 5-15 second clip a beginning, middle, and ending beat.
Add camera direction
Use plain camera language: wide shot, close-up, push-in, overhead view, or follow shot. Combine one camera move with the action.
Set the environment and lighting
Describe a setting that matters: rainy street, sunlit kitchen, misty trail, or warm lamps. Add colors or mood only when they change composition.
Include sound or dialogue direction in the prompt
If sound or dialogue matters, describe who speaks and when in the main prompt. This form has no separate audio switch, negative-prompt field, or prompt-expansion control.
Choose duration and framing before generating
Match duration and aspect ratio to the job. Choose a supported format and start with default 768P to test composition.
Generate Text-to-Video with MiniMax H3
- 1
Write one complete scene prompt
Write subject, action, setting, camera direction, and sound cues as one scene. The field accepts 1-7,000 characters; add details only when they change the shot.
- 2
Set clip length and output resolution
Choose 5-15 whole seconds; 5 seconds is the default. Select 768P, 2K, or 4K. Credits change with resolution and duration.
- 3
Select the composition for its destination
Pick a supported ratio before generating. Choose the target format first so people, products, and key action have room in the composition.
- 4
Generate, review, and revise the prompt
Review action, framing, and readable details, then revise if needed. The form sends prompt, duration, resolution, and aspect ratio; it does not send negative prompts or prompt expansion.
MiniMax H3 Text-to-Video Use Cases
Storyboard a key shot
Turn a written shot into a short storyboard reference. Compare prompt versions before committing to an edit, and keep each request focused on one beat.
Draft social video concepts
Use MiniMax H3 with 9:16, 1:1, or 16:9 to explore an opening motion idea. This is text-to-video, so describe the scene instead of uploading source imagery.
Create atmospheric transition ideas
Prototype fog crossing a ridge, train lights in rain, or hands opening a letter. State movement and camera behavior, then use 5-15 seconds.
Explain a scenario in a presentation
Make a proposed scene easier to discuss in a presentation. Use 16:9 or 4:3 when it matches the deck, name the visual focus, and avoid unrelated events.
Explore product storytelling
Tell MiniMax H3 what an object is doing and how the camera reveals it. Review brand-sensitive details before public use, and keep one product moment.
Test format-specific compositions
Run the same scene with different ratios. Compare 21:9 with 1:1 or 9:16, then revise the prompt so the subject remains clear.
Frequently Asked Questions
What is MiniMax H3 text to video?
MiniMax H3 text to video creates a short AI video from a written scene prompt. On Story321, select duration, resolution, and aspect ratio. The form accepts a text prompt only and keeps the request focused on one written scene.
What should I include in a MiniMax H3 prompt?
A practical MiniMax H3 prompt names subject, action, setting, lighting, and camera behavior. Add sound or dialogue only when needed, then choose duration and framing. Write one connected shot.
Which MiniMax H3 resolutions are available?
Story321 offers 768P, 2K, and 4K output, with 768P as the default. Test a scene at default resolution, then choose 2K or 4K when credits justify it.
What video durations and aspect ratios can I choose?
Choose 5-15 whole seconds, with 5 seconds selected by default. Available aspect ratios are 21:9, 16:9, 4:3, 1:1, 3:4, and 9:16. Select composition first.
Does MiniMax H3 support negative prompts or prompt expansion here?
No. The request sends the written prompt plus duration, resolution, and aspect ratio. It does not send a negative prompt, a prompt-expansion setting, or a separate audio toggle. Put creative direction in the main prompt.
How long can my MiniMax H3 prompt be?
The MiniMax H3 prompt field accepts 1-7,000 characters. Add detail when it changes the scene, action, camera, or atmosphere. Start with the visual priority and remove instructions that compete with the main shot.
How are MiniMax H3 credits calculated?
MiniMax H3 credits are charged per second: 18 credits at 768P, 29 at 2K, and 36 at 4K. Multiply the rate by the whole-second duration. The default 768P, 5-second request costs 90 credits.
MiniMax H3 Pricing
MiniMax H3 credits are charged per second according to the selected resolution. A 5-second request at the default 768P resolution costs 90 credits.
- 768P (default)
- 18 credits per second; 90 credits for 5 seconds
- 2K
- 29 credits per second; 145 credits for 5 seconds
- 4K
- 36 credits per second; 180 credits for 5 seconds
MiniMax H3 Specifications
| Model | MiniMax H3 |
|---|---|
| API model | minimax/h3/text-to-video via fal |
| Input | Text prompt |
| Prompt length | 1-7,000 characters |
| Video duration | 5-15 seconds in whole-second increments; 5 seconds by default |
| Resolution | 768P by default, with 2K and 4K available |
| Aspect ratios | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 |
| Negative prompt | Not supported in this form |
| Prompt expansion | Not supported in this form |
| Audio toggle | Not available in this form |
Create a MiniMax H3 Video
Write one clear scene, select the duration, resolution, and framing, then generate a MiniMax H3 text-to-video clip on Story321. Start at the default 768P setting to test the idea, review the result, and refine the prompt when the next version needs a different action or composition.