素材与参数

4.1 素材字段的统一写法（适用于全部模型）

统一使用扁平字段，所有模型通用：

curl -X POST 'https://newapi.nskeven.uk/v1/video/generations' \
  -H 'Authorization: Bearer sk-xxx' \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "even-sd2.5-A",
    "prompt": "按 @图1 的构图与 @视频1 的运镜，生成雨夜霓虹街道镜头",
    "seconds": "8",
    "aspect_ratio": "9:16",
    "resolution": "720p",
    "images": ["https://your-cdn.com/ref-1.jpg"],
    "videos": ["https://your-cdn.com/ref-cam.mp4"],
    "audios": ["https://your-cdn.com/ref.mp3"]
  }'

两处例外（仅位置不同，字段名不变）：

4.2 豆包 Seedance（doubao-seedance-*）

豆包模型的分辨率、画幅、素材须写在 metadata 内，顶层 resolution / aspect_ratio / images / videos / audios 不生效。

metadata.content 素材项：

• 素材 URL 支持公网 HTTP(S) 链接，或平台素材库地址 asset://ast-xxx
• 首帧、尾帧各最多 1 张；使用首尾帧时图片总数不超过 2 张，且不可同时带参考视频
• 素材请全部写在 metadata.content，不要同时再传顶层 images

示例：

curl -X POST 'https://newapi.nskeven.uk/v1/video/generations' \
  -H 'Authorization: Bearer sk-xxx' \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "doubao-seedance-2-0-fast-260128",
    "prompt": "参考图片中的人物，按参考视频的运镜生成街头镜头",
    "seconds": "8",
    "metadata": {
      "resolution": "720p",
      "ratio": "9:16",
      "content": [
        { "type": "image_url", "image_url": { "url": "https://your-cdn.com/ref-1.jpg" }, "role": "reference_image" },
        { "type": "video_url", "video_url": { "url": "https://your-cdn.com/ref.mp4" }, "role": "reference_video" }
      ]
    }
  }'

4.3 快线系列

适用模型：sd-2-E4 / sd-2-E5 / sd-2-E6 / sd-2-E8 / sd-2.5-E1 / wan-3.0-1080

参考图用顶层 images；参考视频 / 音频写在 metadata.videos / metadata.audios。

curl -X POST 'https://newapi.nskeven.uk/v1/video/generations' \
  -H 'Authorization: Bearer sk-xxx' \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "sd-2-E6",
    "prompt": "根据参考图与参考视频节奏生成同款镜头",
    "seconds": "8",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "images": ["https://your-cdn.com/ref-1.jpg"],
    "metadata": {
      "videos": ["https://your-cdn.com/ref.mp4"],
      "audios": ["https://your-cdn.com/ref.mp3"]
    }
  }'