MiniMax H3 Video

Text-to-video and image-to-video through the shared app.nz H3 Cog, with first/last-frame control, scheduler-level seamless loops, native stereo audio, and GPU AV1 delivery.

$2.688/GPU-hour, metered by completed app.nz execution time (app.nz price + 20%)

Parameters

Parameter	Type	Required	Default	Description
prompt	string	required	—	Scene, action, camera, style, and optional audio direction.
first_frame	string	optional	—	Public start-frame URL for image-to-video. Required for loop mode.
last_frame	string	optional	—	Optional public target final-frame URL.
aspect_ratio	string	optional	16:9	Output frame ratio.Options: 16:9, 9:16, 1:1, 4:3, 3:4, 21:9
size	string	optional	balanced	Preview, balanced, or native 768px short-edge canvas.Options: preview, balanced, native
duration	int	optional	5	Clip length from 4 to 15 seconds.
num_steps	int	optional	20	Sampling steps from 8 to 30.
seed	int	optional	—	Optional deterministic seed.
structured_prompt	boolean	optional	true	Expand concise input into H3 structured prompting.
loop	boolean	optional	false	Reuse first_frame as the scheduler final-frame condition.
include_audio	boolean	optional	true	Generate H3 native stereo audio.
output_format	string	optional	webm-av1	GPU delivery codec.Options: webm-av1, mp4-h264
encode_quality	int	optional	26	NVENC constant quality from 16 to 45; lower is higher quality.

Example Request

curl -X POST https://cutedsl.cc/api/service   -H "Content-Type: application/json"   -H "Authorization: Bearer YOUR_API_KEY"   -d '{
    "service": "h3_video",
    "prompt": "A subtle living photograph of a waterfall",
    "first_frame": "https://example.com/start.webp",
    "loop": true,
    "include_audio": true,
    "size": "balanced",
    "duration": 5,
    "num_steps": 20,
    "output_format": "webm-av1"
  }'

Example Response

{
  "result": {
    "job_id": "video_...",
    "status": "queued",
    "status_url": "/api/video-jobs/video_..."
  },
  "credits_used": 0,
  "settlement": "completed app.nz prediction cost plus 20%",
  "price_usd_per_gpu_hour": 2.688
}

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