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MiniMax H3 Max Text to Video: Write a Scene, Get a Clip

Last verified: October 29, 2026

MiniMax H3 Max is a good fit for short-form video like social content, ad creatives, product videos and visual concepts, where a written idea needs to become a finished shot quickly. MiniMax optimized it for fast generation. With MiniMax H3 Max text to video, you can frame a scene in 21:9, the ultra-wide shape of a cinema screen, or in landscape, square and vertical shapes.

H3 Max is tuned to follow prompts more closely and to look better. This matters most when a clip has to match a brief exactly: a certain product finish, a named camera move, a particular time of day. The more of the brief you write down, the more the model has to follow.

Vidofy's form gives you one prompt box and three settings: Video Duration, Resolution and Aspect Ratio. It returns a finished video to download. Your results depend on how you write the prompt and on those three choices.

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Capability Snapshot

MiniMax H3 Max at a Glance

What you can enter and set for each run, and what you get back.

Input

A text prompt of up to 7,000 characters

Video Duration

5 to 15 seconds

Resolution

480P, 768P or 1080P

Aspect Ratio

21:9, 16:9, 4:3, 1:1, 3:4, 9:16

Output

1 video per run

How Do You Write a Prompt MiniMax H3 Max Follows?

Put the Whole Shot Into One Prompt

Treat the prompt as your complete shot brief. In text-to-video, MiniMax H3 Max gets a single text element and nothing else, so anything you don't write is left to the model. Write the parts in the same order every time: the subject and what it is made of or wearing, the setting and time of day, the one action that matters, the camera's framing and movement, and then the light and look. The Prompt box has plenty of room, so use it on what the camera can see, not on praise words like 'stunning' or 'epic'. A brief built this way is also easy to revise: when a take misses, you can see which part to rewrite.

How Do You Make a Video With MiniMax H3 Max?

Four steps from a written scene to a downloaded clip.

Choosing Between MiniMax H3 Max and MiniMax H3

When to stay with H3 Max and when MiniMax H3, MiniMax's general-purpose video model, is the better fit.

Criterion	MiniMax H3 Max	Alternatives	Best For
Turnaround while iterating	MiniMax optimized H3 Max for fast generation, and it renders faster than MiniMax H3.	MiniMax H3 is the version MiniMax built for high-quality video, and it is the slower of the two.	Pick H3 Max when you need many takes of an idea in one session. Save MiniMax H3 for a single hero render where a longer wait is fine.
Top delivery resolution	The highest Resolution option for H3 Max here is full HD.	MiniMax H3 outputs at 768P or 2K, according to MiniMax's model specs.	Choose MiniMax H3 when a delivery spec specifically asks for 2K. Stay with H3 Max when full HD is the target and speed matters more.

H3 Max is the practical choice for quick, prompt-driven short clips. MiniMax H3 is worth it only when a job specifically needs 2K output and a longer wait is acceptable.

Common MiniMax H3 Max Problems and Fixes

What usually goes wrong in a text-only run, and how to fix it.

My detailed prompt won't fit in the Prompt box.

The Prompt box has a fixed character limit, and a brief full of adjectives, backstory and mood words reaches it quickly. Cut anything the camera can't show, like character history, brand values or abstract feelings. Keep the subject, setting, action, camera move and light, because those are what the video is built from. Paste the shorter version and generate again.

I need a video longer than one clip.

Each run makes one clip within the Video Duration range, so a longer piece has to be built from several clips. Split the idea into shots. Describe the subject, wardrobe, setting and light the same way in every prompt so the shots cut together. Generate each shot at the length it needs, then join them in your editor.

I want a very short clip, but even the shortest duration is too long.

Video Duration has a minimum length, and nothing shorter is offered. Generate at the shortest setting and trim the clip in your editor. Describe the key moment early in the prompt so it falls in the part you keep.

I want several versions of the same idea to choose from.

Generate gives you a single clip per run, so you get variations by running again. Keep the settings the same and change one thing at a time, such as the light, the camera move or the time of day. When a version works, you'll know which change did it.

I wrote 'vertical video' in my prompt but got a landscape clip.

For text-only requests, MiniMax requires you to set the frame shape explicitly and offers no adaptive option. The frame follows the ratio you set, not words like 'vertical' or 'widescreen' in the prompt. The Aspect Ratio setting controls this, and it starts on landscape. Choose the vertical option there and run the prompt again. You can delete the format words from the prompt.

Frequently Asked Questions

How fast does MiniMax H3 Max generate a video?

On MiniMax's own design platform, MiniMax quotes about 15 seconds to generate a 5-second video and about 40 seconds for a 15-second video. It notes that actual time depends on the selected settings and service conditions. Those timings come from MiniMax's own platform, so take them as a rough sense of the model's speed.

What makes one MiniMax H3 Max generation cost more than another?

The credit cost of a run is calculated from the options you pick. Once you're signed in, it shows above the Generate button. It changes with Video Duration and Resolution, so a different clip length or resolution changes the number you see there. Enhance Prompt suggestions don't use credits.

Can MiniMax H3 Max make vertical videos for TikTok, Reels and Shorts?

Yes. Pick the tall portrait option in the Aspect Ratio list before you generate, and write the prompt for a narrow frame. Keep the subject centered, ask for full-body or head-and-shoulders framing, and have movement go toward or away from the camera. Wide sideways pans run out of room fast in a tall frame.

Does Enhance Prompt overwrite what I typed?

No. Enhance Prompt suggests fuller prompts based on your rough idea, and the text in the Prompt box changes only if you pick a suggestion. So it's safe to try on a one-line idea. Pick the suggestion closest to what you imagined, then adjust the details, such as the product finish, the camera move or the light, before you generate.