视频延长

curl --location --request POST 'https://api.xgapi.top/v1/video/generations' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
  "model": "doubao-seedance-2-0-260128-720p",
  "content": [
    {
      "type": "text",
      "text": "视频1中的拱形窗户打开，进入美术馆室内，接视频2，之后镜头进入画内，接视频3"
    },
    {
      "type": "video_url",
      "video_url": {
        "url": "https://ark-project.tos-cn-beijing.volces.com/doc_video/r2v_extend_video1.mp4"
      },
      "role": "reference_video"
    },
    {
      "type": "video_url",
      "video_url": {
        "url": "https://ark-project.tos-cn-beijing.volces.com/doc_video/r2v_extend_video2.mp4"
      },
      "role": "reference_video"
    },
    {
      "type": "video_url",
      "video_url": {
        "url": "https://ark-project.tos-cn-beijing.volces.com/doc_video/r2v_extend_video3.mp4"
      },
      "role": "reference_video"
    }
  ],
  "duration": 5,
  "aspect_ratio": "16:9",
  "extra_body": {
    "watermark": false
  }
}'