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MiniMaxPrompt guide

MiniMax H3 Fast Prompt Guide

How to write MiniMax H3 Fast prompts: a structure that works, 5 example prompts for text to video, image to video and reference to video, the settings that change the result and how to reference your own media. Copy any prompt into the Studio to try it.

Example prompts
5
3 tasks
Resolution
768P
480P · 768P
Clip length
4–15 s
silent
Per try from
$0.0369/s
480P
Create with MiniMax H3 FastGet API keyAPI docs

Try it

Try a prompt on MiniMax H3 Fast

Run the example, then rewrite it with the structure and examples below. The price is on the button; failed runs are refunded.

Open the full-screen Studio

Structure

A MiniMax H3 Fast prompt, piece by piece

Write in this order and keep each part concrete. Physical detail works better than mood words.

  1. 01

    Subject

    Who or what is on screen, with the details that must stay consistent: age, clothing, materials, colours.

  2. 02

    Action

    One clear action in the present tense. For clips up to 15 s, describe a short sequence of beats.

  3. 03

    Camera

    Shot size and movement: close-up, wide, dolly-in, orbit, handheld, drone.

  4. 04

    Scene and light

    Location, time of day, and where the light comes from.

  5. 05

    Style

    Lens, film look, colour grade or animation style.

  6. 06

    References

    Say what each reference controls, e.g. @Image1, @Video1, @Audio1: “@Image1 is the main character”.

Examples

MiniMax H3 Fast prompt examples

Prompts written for this model, grouped by task. Open one in the Studio, then change one part at a time.

  • Text to Video16:9
    A paper boat drifts down a rain-filled gutter at dusk, the patter of rain and a distant tram bell
    Try in Studio
  • Text to Video16:9
    A street dancer spins on a wet basketball court at night, puddle splashes, low tracking shot, crowd cheering
    Try in Studio
  • Text to Video9:16
    Close-up of an old fisherman laughing as rain begins, warm harbour lights, he says “Here it comes!”
    Try in Studio
  • Image to Video
    The flower opens slowly in the morning light, birdsong in the background
    Try in Studio
  • Reference to Video
    The singer from @Image1 performs on the rooftop, following the camera move in @Video1, with the vocals from @Audio1
    Try in Studio

By task

Prompting each MiniMax H3 Fast task

Text to Video

Everything comes from the text, so describe subject, action and camera explicitly. Put the most important element first.

Image to Video

The image is the first frame: describe the motion and camera from that frame instead of re-describing the picture. Add a last frame to control where the shot ends.

Reference to Video

Attach references and mention them in the prompt by name, saying what each one should control — character, product, style or camera move.

Referencing your own media

MiniMax H3 Fast reference inputs and how to mention them
InputIn the promptLimits and rules
Reference images
Reference to Video · up to 9
@Image1, @Image2…Up to 9 images for characters, products, style or scene. Refer to them as @Image1, @Image2… The first 5 are included; each extra image adds a small fee.
Reference videos
Reference to Video · up to 3
@Video1, @Video2…Up to 3 MP4/MOV clips for motion, camera moves or effects (2–15 s each, 15 s in total, ≤ 50 MB each). Refer to them as @Video1, @Video2… Reference-video seconds are billed like output seconds.
Reference audio
Reference to Video · up to 3
@Audio1, @Audio2…Up to 3 MP3/WAV clips for voice, music or sound (2–15 s each, 15 s in total, ≤ 15 MB each). Refer to them as @Audio1, @Audio2… Needs at least one reference image or video.

Settings

Settings that change the result

Set these next to the prompt — in the Studio or as API parameters.

MiniMax H3 Fast generation settings
SettingOptionsEffect
Aspect ratio
aspect_ratio
16:9 · 9:16 · 1:1 · 4:3 · 3:4 · 21:9
default 16:9
Output frame shape.
Resolution
resolution
480P · 768P
default 768P
Output resolution. Higher resolutions cost more per second.
Price: 480P $0.0369/s · 768P $0.0546/s
Duration
duration
4–15s
default 6
Length of the generated clip in seconds (4–15s). You pay per second.
Seed
seed
—Use the same seed and settings to reproduce a result. Leave empty for random.
Enable Safety Checker
enable_safety_checker
on / off
default true
If set to true, the safety checker will be enabled. Content our Acceptable Use Policy prohibits stays blocked either way.

FAQ

MiniMax H3 Fast prompting questions

There is no separate negative prompt for MiniMax H3 Fast. Say what you want instead of what you don't, and keep unwanted elements out of the description.

Reference to Video: Up to 9 images for characters, products, style or scene. Refer to them as @Image1, @Image2… The first 5 are included; each extra image adds a small fee. Reference to Video: Up to 3 MP4/MOV clips for motion, camera moves or effects (2–15 s each, 15 s in total, ≤ 50 MB each). Refer to them as @Video1, @Video2… Reference-video seconds are billed like output seconds. Reference to Video: Up to 3 MP3/WAV clips for voice, music or sound (2–15 s each, 15 s in total, ≤ 15 MB each). Refer to them as @Audio1, @Audio2… Needs at least one reference image or video.

Yes — set "seed" to a fixed number and keep the prompt and settings identical. Use the same seed and settings to reproduce a result. Leave empty for random.

No audio option is listed for MiniMax H3 Fast; add sound in post.

Open MiniMax H3 Fast in the Studio and paste any prompt from this page. Each run shows its exact price before you generate, and failed generations are refunded.