ByteDance: Seedance 2.0 (Image to Video) API Reference

About

ByteDance's most advanced image-to-video model. Animate still images into cinematic video with synchronized audio, start and end frame control, and motion prompts.

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 @- <<'EOF'
{
  "model": "bytedance/seedance-2.0/image-to-video",
  "prompt": "Both accelerate hard out of a corner together — grandmother's wheelchair wobbles at the limit, she counter-steers with pure instinct, knuckles white on the joystick, her reading glasses flying off her face into the slipstream. The F1 driver glances over through his visor, visibly shaken. She doesn't look back. They hit the straight — the F1 car pulls away slowly, but she tucks into its wake and drafts, inching back up. Cut to the grandstands erupting.",
  "start_image_url": "https://storage.googleapis.com/infron_gcs/image%2Fplayground-inputs%2F15%2F20260602%2F7f4e76f8-9617-4110-91ba-def6625cc59e.jpg",
  "aspect_ratio": "16:9",
  "duration": "4",
  "resolution": "4k",
  "generate_audio": true,
  "n": 1,
  "seed": 123456
}
EOF

Response with queue task id

The response will look like this:

{
  "code": 200,
  "message": "success",
  "data": {
    "task_id": "991e1acb52d7437b954ffcc111ffd18a",
    "object": "video",
    "model": "bytedance/seedance-2.0/image-to-video",
    "status": "created",
    "urls": {
      "query": "https://media.onerouter.pro/v1/videos/tasks/991e1acb52d7437b954ffcc111ffd18a"
    },
    "created_at": "2026-06-25 06:33:41.13"
  }
}

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/991e1acb52d7437b954ffcc111ffd18a \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json"

Response with queue task status query

{
  "code": 200,
  "message": "success",
  "data": {
    "task_id": "991e1acb52d7437b954ffcc111ffd18a",
    "object": "video",
    "model": "bytedance/seedance-2.0/image-to-video",
    "status": "in_progress",
    "fail_reason": "",
    "submit_time": 1782369221,
    "start_time": 1782369225,
    "finish_time": 0,
    "outputs": [],
    "created_at": "2026-06-25 06:33:41"
  }
}

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": "991e1acb52d7437b954ffcc111ffd18a",
    "object": "video",
    "model": "bytedance/seedance-2.0/image-to-video",
    "status": "completed",
    "fail_reason": "",
    "submit_time": 1782369221,
    "start_time": 1782369225,
    "finish_time": 1782369564,
    "outputs": [
      "https://storage.googleapis.com/infron_gcs/video%2Fvideo_v2%2Foutput%2Foutput_8ebeb8a4-e73e-4308-83cc-764c3b483474.mp4"
    ],
    "usage": {
      "completion_tokens": 785700,
      "duration": 4,
      "generate_audio": true,
      "output_count": 1,
      "prompt_tokens": 0,
      "request_num": 1,
      "resolution": "4k",
      "tokens": 785700,
      "total_tokens": 785700,
      "video_duration": 4
    },
    "cost": {
      "total_cost": 5.4999,
      "cost_details": {
        "prompt_cost": 0,
        "completion_cost": 0,
        "image_cost": 0,
        "video_cost": 5.4999,
        "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": "2026-06-25 06:33:41"
  }
}

2. Schema

Input

Example request

curl https://media.onerouter.pro/v1/videos/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d @- <<'EOF'
{
  "model": "bytedance/seedance-2.0/image-to-video",
  "prompt": "Both accelerate hard out of a corner together — grandmother's wheelchair wobbles at the limit, she counter-steers with pure instinct, knuckles white on the joystick, her reading glasses flying off her face into the slipstream. The F1 driver glances over through his visor, visibly shaken. She doesn't look back. They hit the straight — the F1 car pulls away slowly, but she tucks into its wake and drafts, inching back up. Cut to the grandstands erupting.",
  "start_image_url": "https://storage.googleapis.com/infron_gcs/image%2Fplayground-inputs%2F15%2F20260602%2F7f4e76f8-9617-4110-91ba-def6625cc59e.jpg",
  "aspect_ratio": "16:9",
  "duration": "4",
  "resolution": "4k",
  "generate_audio": true,
  "n": 1,
  "seed": 123456
}
EOF

Output

Example output

{
  "code": 200,
  "message": "success",
  "data": {
    "task_id": "991e1acb52d7437b954ffcc111ffd18a",
    "object": "video",
    "model": "bytedance/seedance-2.0/image-to-video",
    "status": "completed",
    "fail_reason": "",
    "submit_time": 1782369221,
    "start_time": 1782369225,
    "finish_time": 1782369564,
    "outputs": [
      "https://storage.googleapis.com/infron_gcs/video%2Fvideo_v2%2Foutput%2Foutput_8ebeb8a4-e73e-4308-83cc-764c3b483474.mp4"
    ],
    "usage": {
      "completion_tokens": 785700,
      "duration": 4,
      "generate_audio": true,
      "output_count": 1,
      "prompt_tokens": 0,
      "request_num": 1,
      "resolution": "4k",
      "tokens": 785700,
      "total_tokens": 785700,
      "video_duration": 4
    },
    "cost": {
      "total_cost": 5.4999,
      "cost_details": {
        "prompt_cost": 0,
        "completion_cost": 0,
        "image_cost": 0,
        "video_cost": 5.4999,
        "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": "2026-06-25 06:33:41"
  }
}

3. Detailed Pricing