About
MiniMax H3 is a frontier video model. This endpoint animates a supplied image into 2K video, using it as the opening frame or pairs a first and last frame to control a transition between two images.
1. Calling the API
Setup your API Key
To begin using Infron, you first need to create an account and generate your API Key.
Once you have your API key, set it as an environment variable in your runtime environment. This allows your applications to securely access Infron’s API.
export INFRON_KEY="YOUR_API_KEY"Submit a request
For long-running requests, you can poll for results.
curl https://media.onerouter.pro/v1/videos/generations \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "minimax/minimax-h3/image-to-video",
"prompt": "Two heavy draft horses stand together in a shallow flooded pasture at dusk — a chestnut with a long flaxen-copper mane, head lowered and turned inward, resting against the shoulder of a dark dapple-grey with black feathered legs. Ankle-deep still water mirrors them almost perfectly. Golden-hour side light, pale peach and dove-grey sky, bare winter trees and a red-roofed barn far in the background with small grazing horses. Extremely slow, quiet motion.",
"start_image_url": "https://storage.googleapis.com/infron_gcs/quick-upload/2026/08/31/20260831-110035-1debcb43-horse.png",
"end_image_url": "",
"duration": 5,
"resolution": "2K",
"watermark": false
}'Response with queue task id
The response will look like this:
{
"code": 200,
"message": "success",
"data": {
"task_id": "20260831030120288297612t4c2qyqI",
"object": "video",
"model": "minimax/minimax-h3/image-to-video",
"status": "created",
"urls": {
"query": "https://media.onerouter.pro/v1/videos/tasks/20260831030120288297612t4c2qyqI"
},
"created_at": "2026-08-31 03:01:20.33"
}
}Fetch request status
You can fetch the status of a request to check if it is completed or still in progress.
curl https://media.onerouter.pro/v1/videos/tasks/{task_id} \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json"
# For example
curl https://media.onerouter.pro/v1/videos/tasks/20260831030120288297612t4c2qyqI \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json"Response with queue task status query
{
"code": 200,
"message": "success",
"data": {
"task_id": "20260831030120288297612t4c2qyqI",
"object": "video",
"model": "minimax/minimax-h3/image-to-video",
"status": "in_progress",
"fail_reason": "",
"submit_time": 1788145280,
"start_time": 1788145280,
"finish_time": 0,
"outputs": [],
"created_at": "2026-08-31 03:01:20"
}
}Possible statuses:
- created
- in_progress
- processing
- completed
- failed
created -> in_progress → processing → completed | failed
Poll every 1-2 seconds until status is "completed" or "failed"
Get the result (when status is "completed")
Once the request is completed, you can fetch the result. See the Output Schema for the expected result format.
{
"code": 200,
"message": "success",
"data": {
"task_id": "20260831030120288297612t4c2qyqI",
"object": "video",
"model": "minimax/minimax-h3/image-to-video",
"status": "completed",
"fail_reason": "",
"submit_time": 1788145280,
"start_time": 1788145280,
"finish_time": 1788145517,
"outputs": [
"https://infron.ai/cdn/media/video/video_v2/output/output_449d45ed-36db-440c-814c-ae3803e1abbb.mp4"
],
"usage": {
"completion_tokens": 0,
"duration": 5,
"generate_audio": true,
"output_count": 1,
"prompt_tokens": 1,
"request_num": 1,
"resolution": "2K",
"tokens": 1,
"total_tokens": 1,
"video_duration": 5
},
"cost": {
"total_cost": 0.69,
"cost_details": {
"prompt_cost": 0,
"completion_cost": 0,
"image_cost": 0,
"video_cost": 0.69,
"audio_cost": 0,
"native_web_search_cost": 0,
"plugin_web_search_cost": 0,
"tools_cost": 0,
"prompt_cache_read_cost": 0,
"prompt_cache_write_cost": 0,
"prompt_cache_write_5_min": 0,
"prompt_cache_write_1_h": 0,
"reasoning_cost": 0,
"discount_rate": 1,
"is_byok": false,
"byok_cost": 0
}
},
"created_at": "2026-08-31 03:01:20"
}
}2. Schema
Input
| Parameter | Type | Required | Default | Range | Description |
|---|---|---|---|---|---|
| model | string | Yes | -- | Explore all models | Model name. |
| prompt | string | Yes | -- | -- | Text prompt for generation; Positive text prompt. |
| startimageurl | string | Yes | -- | -- | At least one of startimageurl or endimageurl is required. |
| endimageurl | string | Yes | -- | -- | At least one of startimageurl or endimageurl is required. |
| duration | integer | No | 4 | 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | Duration of the generated video |
| resolution | string | No | 2K | 768P, 2K | Resolution of the generated video |
| watermark | boolean | No | False | true, false | Whether to generate watermark. |
Example request
curl https://media.onerouter.pro/v1/videos/generations \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "minimax/minimax-h3/image-to-video",
"prompt": "Two heavy draft horses stand together in a shallow flooded pasture at dusk — a chestnut with a long flaxen-copper mane, head lowered and turned inward, resting against the shoulder of a dark dapple-grey with black feathered legs. Ankle-deep still water mirrors them almost perfectly. Golden-hour side light, pale peach and dove-grey sky, bare winter trees and a red-roofed barn far in the background with small grazing horses. Extremely slow, quiet motion.",
"start_image_url": "https://storage.googleapis.com/infron_gcs/quick-upload/2026/08/31/20260831-110035-1debcb43-horse.png",
"end_image_url": "",
"duration": 5,
"resolution": "2K",
"watermark": false
}'Output
| Parameter | Type | Range | Description |
|---|---|---|---|
| code | integer | -- | Status code of the request. |
| message | string | -- | Status message of the request. |
| data | object | -- | Data of the video task. |
| data.task_id | string | -- | ID of the video task. |
| data.object | string | -- | Object type of the video task. |
| data.model | string | -- | Model name of the video task. |
| data.status | string | created, in_progress, processing, completed, failed | Status of the video task. |
| data.fail_reason | string | -- | Fail reason of the video task. |
| data.submit_time | integer | -- | Timestamp of the video task submission. |
| data.start_time | integer | -- | Timestamp of the video task start. |
| data.finish_time | integer | -- | Timestamp of the video task finish. |
| data.outputs | array | -- | Outputs of the video task. |
| data.created_at | string | -- | Timestamp of the video task creation. |
Example output
{
"code": 200,
"message": "success",
"data": {
"task_id": "20260831030120288297612t4c2qyqI",
"object": "video",
"model": "minimax/minimax-h3/image-to-video",
"status": "completed",
"fail_reason": "",
"submit_time": 1788145280,
"start_time": 1788145280,
"finish_time": 1788145517,
"outputs": [
"https://infron.ai/cdn/media/video/video_v2/output/output_449d45ed-36db-440c-814c-ae3803e1abbb.mp4"
],
"usage": {
"completion_tokens": 0,
"duration": 5,
"generate_audio": true,
"output_count": 1,
"prompt_tokens": 1,
"request_num": 1,
"resolution": "2K",
"tokens": 1,
"total_tokens": 1,
"video_duration": 5
},
"cost": {
"total_cost": 0.69,
"cost_details": {
"prompt_cost": 0,
"completion_cost": 0,
"image_cost": 0,
"video_cost": 0.69,
"audio_cost": 0,
"native_web_search_cost": 0,
"plugin_web_search_cost": 0,
"tools_cost": 0,
"prompt_cache_read_cost": 0,
"prompt_cache_write_cost": 0,
"prompt_cache_write_5_min": 0,
"prompt_cache_write_1_h": 0,
"reasoning_cost": 0,
"discount_rate": 1,
"is_byok": false,
"byok_cost": 0
}
},
"created_at": "2026-08-31 03:01:20"
}
}3. Detailed Pricing
| Resolution | Billed unit | Price |
|---|---|---|
768p | 1 output video second | $0.08 |
2k | 1 output video second | $0.13 |
768p → 2k regeneration | 1 output video second | $0.05 |
reference video → 768p | 1 input video second | $0.08 |
reference video → 2k | 1 input video second | $0.13 |
additional image (>5) | 1 input image | $0.04 |
audio | 1 input audio | Free |