Question 1

What can I make with MiniMax H3?

Accepted Answer

Short film shots, advertising creative, music videos, character animation, product films, and social clips. Anything that starts with a prompt and ends in a finished clip with sound. Animate a still image into a full scene. Bring a character sheet into motion. Match the cutting rhythm of a reference video. H3 holds a subject steady across references, renders on-screen text that stays legible, and makes small local edits that leave the rest of the shot alone.

Question 2

How many reference images, videos, and audio clips can I attach?

Accepted Answer

Up to nine reference images, three reference videos, and three reference audio clips in one generation. Each one does a different job. An image sets the character, the wardrobe, the product, or the set. A video carries the motion or the editing rhythm. An audio clip carries the voice you want the character to use. Attach only what the shot needs and leave the rest empty. A natural fit for episodic content, brand campaigns, and any project where the same cast appears across many shots.

Question 3

Does MiniMax H3 generate audio and dialogue?

Accepted Answer

Yes. H3 makes the sound in the same pass as the picture, not as a dubbing step afterwards. Score, dialogue, foley, and ambience land in time with the shot. Write the spoken lines into the prompt, name the character who says each one, and keep the lines short, because a long line can outrun the length of the clip. Say what should stay quiet as well, because the model fills an empty soundtrack on its own. Attach a reference audio clip and the model carries that voice onto your character. The result is one MP4 with the sound already inside it.

Question 4

Can I set the first and the last frame of the clip?

Accepted Answer

Yes. Give H3 a first frame and the clip starts on that image. Give it a last frame and the clip lands on that image. Give it both and the model builds the motion between them, which is the tightest way to control a shot. One thing to watch: a first-frame image also sets the shape of the clip, so the output follows that image's aspect ratio instead of the Aspect setting.

Question 5

Should I use MiniMax H3, Seedance 2.5, or Veo 3.1?

Accepted Answer

Pick H3 for reference-led work, for 2K delivery, and for a shot that has to carry a specific voice. Pick Seedance 2.5 when one shot needs many more reference images, up to thirty, or a clip longer than fifteen seconds. Pick Veo 3.1 for photoreal fidelity, for a straight 16:9 or 9:16 delivery at 720p or 1080p, and when you want the option to turn the sound off. All three share the same prompt and input interface in Visual Sandbox, so moving a shot to a second model is one click.

Question 6

What aspect ratios, resolutions, and lengths does MiniMax H3 support?

Accepted Answer

Seven aspect ratios: 21:9, 16:9, 4:3, 1:1, 3:4, 9:16, and adaptive, which follows the shape of your reference. Resolution is 768p or 2K. Clips run from four to fifteen seconds. Portrait 9:16 suits TikTok, Reels, and Shorts. Wide 21:9 suits a cinematic cut. For a longer piece, chain clips in Visual Sandbox by feeding the last frame of one in as the first frame of the next.

Question 7

How do I write a good MiniMax H3 prompt?

Accepted Answer

Write the shot in layers. Start with the subject and what it does. Add the setting, the camera move, and the light. Then add the sound: the spoken lines, the effects tied to an action, and the ambience. Keep the spoken lines short so they fit the length you picked. Name the reference you mean, such as the character in the first image or the camera move in the first video, and the model follows that one.

Question 8

How much does a MiniMax H3 video cost?

Accepted Answer

H3 is billed per second of output. 768p costs less than 2K, and the pricing table above shows both rates. A four second clip costs a fraction of a fifteen second one. Visual Sandbox shows the exact cost before you generate, and charges per clip when the result is delivered. There is no subscription and no monthly minimum.

Question 9

Can I use MiniMax H3 videos commercially?

Accepted Answer

MiniMax does not claim ownership of what you generate, so the clips are yours to use in ads, social content, films, apps, games, and client work. MiniMax also states that you use generated content at your own risk, so read its terms before a clip carries a campaign. You stay responsible for what you put in. If a reference image, a reference video, or a reference voice belongs to somebody else, get permission before you publish. The same goes for a prompt that names a real person or a protected brand.

Tier	Price
768p	$0.10/s
2K	$0.17/s

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