Minimax Video

MiniMax H3 Video Generation

Generate 4–15 second videos through POST https://api.acedata.cloud/minimax/videos. Use the V2 multimodal content array to supply the prompt and optional reference media.

Setup: See authentication. The HTTP API waits for the final result by default. Agents and MCP clients should send "async": true, save the returned task_id, then use async task polling with POST /minimax/tasks. MiniMax MCP generation tools expose async and default it to true.

Contract

Each content item has a type of text, image_url, video_url, or audio_url; set the matching field to the text or public URL. Media items use a role:

Include a text item with the generation prompt in every request.

Text to video

curl -X POST https://api.acedata.cloud/minimax/videos \
  -H "Authorization: ******" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "MiniMax-H3",
    "content": [
      {
        "type": "text",
        "text": "A red fox running through a snowy forest at dawn, low tracking shot"
      }
    ],
    "resolution": "768P",
    "ratio": "16:9",
    "duration": 4,
    "async": true
  }'

First and last frame video

{
  "model": "MiniMax-H3",
  "content": [
    {
      "type": "text",
      "text": "A camera slowly pushes in as the character walks into the sunrise."
    },
    {
      "type": "image_url",
      "image_url": {"url": "https://cdn.acedata.cloud/first-frame.png"},
      "role": "first_frame"
    },
    {
      "type": "image_url",
      "image_url": {"url": "https://cdn.acedata.cloud/last-frame.png"},
      "role": "last_frame"
    }
  ],
  "resolution": "768P",
  "ratio": "9:16",
  "duration": 8,
  "async": true
}

Reference-guided video

{
  "model": "MiniMax-H3",
  "content": [
    {
      "type": "text",
      "text": "A dancer moves naturally to the rhythm."
    },
    {
      "type": "image_url",
      "image_url": {"url": "https://cdn.acedata.cloud/reference.png"},
      "role": "reference_image"
    },
    {
      "type": "audio_url",
      "audio_url": {"url": "https://cdn.acedata.cloud/reference.wav"},
      "role": "reference_audio"
    }
  ],
  "resolution": "768P",
  "ratio": "9:16",
  "duration": 8,
  "async": true
}

Poll a task

curl -X POST https://api.acedata.cloud/minimax/tasks \
  -H "Authorization: ******" \
  -H "Content-Type: application/json" \
  -d '{"action":"retrieve","id":"TASK_ID"}'

Continue polling about every five seconds until the task reaches a terminal state. Use retrieve_batch with ids to check several tasks, or delete with id to remove a task. Batch listing also accepts limit, offset, created_at_min, and created_at_max.

Gotchas

• Do not send action to /minimax/videos; the API infers the mode from media inputs.
• duration must be an integer, not a decimal.
• Put the prompt in a content item with type: "text"; do not send a top-level prompt.
• Use first_frame, last_frame, and reference roles explicitly; do not rely on item order to determine an image's role.
• Use public URLs that the generation service can download for every media item.
• Returned videos are served from AceDataCloud CDN.