GET /v1/video/generations/{task_id}

Authorization: Bearer YOUR_API_KEY

{
  "id": "video_task_abc123",
  "status": "SUCCESS",
  "video_url": "https://example.com/video.mp4"
}

{
  "code": "task_not_exist",
  "message": "task_not_exist",
  "data": null
}