Seedance 2.0

Create Video Generation Task

Submit a video generation task. Supports text-to-video and image-to-video.

curl -X POST "https://www.vastnum.com/v1/video/generations" \
  -H "Authorization: Bearer $WS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedance-2-0-260128",
    "prompt": "First-person POV throughout, using the composition of video 1 and audio 1 as background music. A first-person fruit-tea promo for AVG \"WSAI\" Apple Fruit Tea limited edition; first frame is image 1, your hand picks a dew-covered Aksu red apple with a crisp snap; 2-4s: quick cut, your hand drops apple chunks into a shaker with ice and tea base, shakes vigorously, ice and shaking sounds sync to upbeat drums, voiceover: \"Freshly cut, freshly shaken\"; 4-6s: first-person close-up of the finished product, layered fruit tea poured into a clear cup, your hand spreads cream cap on top, applies a pink label, camera moves in on the layered texture; 6-8s: first-person hold-up, you raise the fruit tea from image 2 to the camera (as if handing it to the viewer), label clearly visible, voiceover: \"Take a fresh sip\", final frame freezes on image 2. All background voice unified as female timbre.",
    "images": [
      "https://ark-project.tos-cn-beijing.volces.com/doc_image/r2v_tea_pic1.jpg",
      "https://ark-project.tos-cn-beijing.volces.com/doc_image/r2v_tea_pic2.jpg"
    ],
    "videos" :["https://ark-project.tos-cn-beijing.volces.com/doc_video/r2v_tea_video1.mp4"],

    "audios": [
      "https://ark-project.tos-cn-beijing.volces.com/doc_audio/r2v_tea_audio1.mp3"
    ],
    "metadata": {
      "generate_audio": true,
      "resolution" : "480p",
      "ratio": "4:3",
      "duration": 5,
      "watermark": false
    }
  }'

Returns a task ID. Use the GET endpoint to query task status.

{"task_id":"task_id"}

Get Video Generation Task Status

Query the status and result of a video generation task.

curl https://www.vastnum.com/v1/video/generations/task_id \
  -H "Authorization: Bearer $WS_API_KEY"

Task status:

{
  "code": "success",
  "message": "",
  "data": {
    "task_id": "task_id",
    "action": "generate",
    "status": "SUCCESS",
    "fail_reason": "",
    "submit_time": 1775188030,
    "start_time": 1775188043,
    "finish_time": 1775188329,
    "progress": "100%",
    "data": {
      "id": "task_id",
      "draft": false,
      "model": "volcengine/doubao-seedance-2-0-260128",
      "ratio": "4:3",
      "frames": 0,
      "result": {
        "id": "cgt-20260403114650-qgcb2",
        "seed": 40141,
        "draft": false,
        "model": "doubao-seedance-2-0-260128",
        "ratio": "4:3",
        "usage": {
          "total_tokens": 99111,
          "completion_tokens": 99111
        },
        "status": "succeeded",
        "content": {
          "video_url": "video download URL"
        },
        "duration": 5,
        "created_at": 1775188030,
        "resolution": "480p",
        "updated_at": 1775188324,
        "service_tier": "default",
        "generate_audio": true,
        "framespersecond": 24,
        "execution_expires_after": 172800
      },
      "status": "succeed",
      "duration": 5,
      "created_at": "2026-04-03T03:47:10Z",
      "resolution": "480p",
      "updated_at": "2026-04-03T03:52:04Z"
    }
  }
}

• queued: queued
• in_progress: in progress
• completed: completed
• failed: failed