{
  "maxDuration": 30,
  "request": {
    "model": "heygen-video-1",
    "mode": "image_to_video",
    "prompt": "In an invented observatory workshop, a fictional keeper in a plain green coat stands beside an unmarked brass telescope. Fixed medium-wide composition. The keeper says: \"The eastern lens is ready.\" Quiet ventilation and one distant mechanical click. No music, lettering or logos. Keep hands still.",
    "duration": 10,
    "resolution": "768p",
    "prompt_enhancement": "quality",
    "seed": 42,
    "image": {
      "type": "asset_id",
      "asset_id": "REPLACE_WITH_FIRST_FRAME_ASSET_ID"
    }
  },
  "note": "Local planning example checked against public docs October 24 2026; replace every placeholder with your own uploaded workspace asset ID; no API request has been sent or tested"
}