curl --request POST \
  --url https://api.powertokens.ai/v1/videos \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "seedance-1-5-pro-251215",
  "media": [
    {
      "type": "text",
      "text": "状态过渡"
    },
    {
      "type": "first_frame",
      "url": "https://example.com/start.jpg"
    },
    {
      "type": "last_frame",
      "url": "https://example.com/end.jpg"
    }
  ]
}
'