{
  "model": "doubao-seedance-2-0-260128",
  "content": [
    {
      "type": "text",
      "text": "Follow the timing and side step rhythm of the reference video. Exactly two adult cartoon characters from the reference video: orange fox on the left, indigo bird on the right. Both face front, start and end together, two synchronized side steps right then two left, simple arm swings. Keep feet and heads fully visible, fixed wide camera, no crossing, no objects."
    },
    {
      "type": "video_url",
      "video_url": {
        "url": "<video_url input; see input-provenance.json>"
      },
      "role": "reference_video"
    }
  ],
  "duration": 8,
  "resolution": "720p",
  "ratio": "16:9",
  "generate_audio": false
}