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seedance-2.5 API

通过 Modelflare 异步视频入口使用精确的 seedance-2.5 模型 ID。

使用精确模型 ID seedance-2.5。请求中的模型名必须与本页完全一致。

示例输出seedance-2.5POST /v1/videos5.1s

请求参数:duration=5resolution=1080pratio=16:9

提示词:A small research submersible descends through the deep ocean, its headlights sweeping over a drifting field of bioluminescent jellyfish and a sunken stone archway. Camera follows from behind, particles float in the beams, blue-black water, calm and mysterious, photoreal, no text.

生成该示例的请求
{
"model": "seedance-2.5",
"prompt": "A small research submersible descends through the deep ocean, its headlights sweeping over a drifting field of bioluminescent jellyfish and a sunken stone archway. Camera follows from behind, particles float in the beams, blue-black water, calm and mysterious, photoreal, no text.",
"seconds": "5",
"duration": 5,
"resolution": "1080p",
"ratio": "16:9",
"aspect_ratio": "16:9"
}

使用 Modelflare API Key,通过 https://modelflare.dev/v1 发送请求。网关入口为 POST /v1/videos。

HTTP
Authorization: Bearer YOUR_MODELFLARE_API_KEY
终端窗口bash
curl https://modelflare.dev/v1/videos \
-H "Authorization: Bearer YOUR_MODELFLARE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2.5",
"content": [{"type": "text", "text": "一只白猫在雨夜霓虹街道上奔跑,电影感跟拍"}],
"resolution": "720p",
"duration": 5,
"generate_audio": false
}'

提交成功后保存任务 ID。使用 GET /v1/videos/{task_id} 轮询,完成后使用 GET /v1/videos/{task_id}/content 下载;结果地址可能过期,应及时转存。

终端窗口bash
curl https://modelflare.dev/v1/videos/TASK_ID \
-H "Authorization: Bearer YOUR_MODELFLARE_API_KEY"

Seedance 使用 content[] 表达文字、帧和参考媒体;资产管理接口单独记录在Seedance 素材管理中。

Seedance 采用统一的多模态异步请求。将文字和媒体按顺序放入 content[],媒体角色决定首帧、尾帧或参考素材工作流。

字段 必填 说明
model 是 seedance-2.5
content[] 是 text、image_url、video_url、audio_url;用 role 标记媒体用途
resolution 否 480p / 720p / 1080p
ratio 否 21:9 / 16:9 / 4:3 / 1:1 / 3:4 / 9:16 / adaptive
duration 否 -1 自动选择,或 4–30 秒
generate_audio 否 是否生成同步对白、音效和背景音
tools 否 仅在官方支持的文生视频场景使用 web_search
watermark 否 是否添加水印
omni_reference_task_type 否 auto / reference / edit / extend;编辑与延长会收紧 ratio/duration 要求
output_format 否 mp4 / mov
return_last_frame 否 是否返回最终帧图片

当前模型支持 480p、720p、1080p;时长可使用 -1 自动选择,或填写 4–30 秒。最多可组合 30 张图片、10 段视频和 10 段音频。普通参考生成可用显式比例或 adaptive;编辑、续写和首/尾帧工作流必须使用 ratio: "adaptive",编辑时 duration 必须为 -1。 虚拟人像图片必须先上传到素材库;Modelflare 不提供真人认证。

Seedance 2.5 会根据媒体角色和任务类型区分普通参考、编辑、续写和首尾帧工作流。下面的字段保持 官方契约,只有入口和模型 ID 改为 Modelflare。

终端窗口bash
curl https://modelflare.dev/v1/videos \
-H "Authorization: Bearer YOUR_MODELFLARE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2.5",
"omni_reference_task_type": "reference",
"content": [
{"type":"text","text":"@image1 performs the movement from @video1, paced to @audio1"},
{"type":"image_url","image_url":{"url":"https://example.com/character.jpg"},"role":"reference_image"},
{"type":"video_url","video_url":{"url":"https://example.com/motion.mp4"},"role":"reference_video"},
{"type":"audio_url","audio_url":{"url":"https://example.com/music.mp3"},"role":"reference_audio"}
],
"ratio": "16:9", "duration": 15, "output_format": "mp4"
}'
终端窗口bash
curl https://modelflare.dev/v1/videos \
-H "Authorization: Bearer YOUR_MODELFLARE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2.5", "omni_reference_task_type": "edit",
"content": [
{"type":"text","text":"Remove the background pedestrians but preserve the main subject"},
{"type":"video_url","video_url":{"url":"https://example.com/source.mov"},"role":"reference_video"}
],
"ratio": "adaptive", "duration": -1, "output_format": "mov"
}'
终端窗口bash
curl https://modelflare.dev/v1/videos \
-H "Authorization: Bearer YOUR_MODELFLARE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2.5", "omni_reference_task_type": "extend",
"content": [{"type":"video_url","video_url":{"url":"https://example.com/source.mp4"},"role":"reference_video"}],
"ratio": "adaptive", "duration": 11, "output_format": "mov"
}'
终端窗口bash
curl https://modelflare.dev/v1/videos \
-H "Authorization: Bearer YOUR_MODELFLARE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "seedance-2.5", "content": [
{"type":"text","text":"The subject smiles while the camera makes a smooth orbit"},
{"type":"image_url","image_url":{"url":"https://example.com/first.jpg"},"role":"first_frame"},
{"type":"image_url","image_url":{"url":"https://example.com/last.jpg"},"role":"last_frame"}
],
"ratio": "adaptive", "duration": -1, "return_last_frame": true
}'

参数不符合模型契约时,创建接口会返回带 request ID 的 4xx。异步任务也可能在创建成功后进入 failed;轮询响应中的 error_code 和 error_message 才是该任务的最终原因。不要把同一请求改成另一种 JSON 结构重试。

本页只覆盖 Modelflare 的模型生成/编辑调用。搜索或地图增强、声音管理、元素库管理等资源型接口不属于本页的公开调用范围,也不需要作为模型请求字段传入。

本模型按 Token 计费。请查看模型价格页查看当前销售价、参考原价和完整规格。

模型 ID 差异
seedance-2.5 本页说明的模型。
媒体契约 · v1

契约 ID: media.seedance-2-5.v1Adapter: video.seedance.25.v1@v1指纹: 37c632491a1b23a8dd328d9b89b3f14cd4a7c163ab55f73f27aefb4e0418caa5

官方来源: ByteDance / Volcengine

契约参数

Intent 字段控件选项
ratioselect16:9 / 9:16 / 1:1 / 4:3 / 3:4 / 21:9 / adaptive
resolutionselect480p / 720p / 1080p
durationselect-1 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 / 14 / 15 / 16 / 17 / 18 / 19 / 20 / 21 / 22 / 23 / 24 / 25 / 26 / 27 / 28 / 29 / 30
audioswitch—
workflowselectauto / reference / edit / extend
output_formatselectmp4 / mov
return_last_frameswitch—

支持能力

  • allowed_values · ratio · 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, adaptive
  • allowed_values · resolution · 480p, 720p, 1080p
  • allowed_values · duration · -1, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30
  • max_assets · reference_asset_ids · 50
  • prompt_optional_with_reference · prompt

结构化请求示例

text

Intent

{
  "audio": false,
  "duration": -1,
  "output_format": "mp4",
  "prompt": "A red paper kite over a quiet harbour at dusk.",
  "ratio": "16:9",
  "resolution": "480p",
  "return_last_frame": false,
  "workflow": "auto"
}

上游请求

{
  "content": [
    {
      "text": "A red paper kite over a quiet harbour at dusk.",
      "type": "text"
    }
  ],
  "duration": -1,
  "generate_audio": false,
  "model": "seedance-2.5",
  "output_format": "mp4",
  "ratio": "16:9",
  "resolution": "480p",
  "return_last_frame": false,
  "seconds": "-1"
}

reference

Intent

{
  "audio": false,
  "duration": -1,
  "output_format": "mp4",
  "prompt": "A red paper kite over a quiet harbour at dusk.",
  "ratio": "16:9",
  "resolution": "480p",
  "return_last_frame": false,
  "workflow": "reference"
}

上游请求

{
  "content": [
    {
      "text": "A red paper kite over a quiet harbour at dusk.",
      "type": "text"
    },
    {
      "image_url": {
        "url": "https://example.com/reference.png"
      },
      "role": "reference_image",
      "type": "image_url"
    }
  ],
  "duration": -1,
  "generate_audio": false,
  "model": "seedance-2.5",
  "omni_reference_task_type": "reference",
  "output_format": "mp4",
  "ratio": "16:9",
  "resolution": "480p",
  "return_last_frame": false,
  "seconds": "-1"
}

edit

Intent

{
  "audio": false,
  "duration": -1,
  "output_format": "mp4",
  "prompt": "A red paper kite over a quiet harbour at dusk.",
  "ratio": "adaptive",
  "resolution": "480p",
  "return_last_frame": false,
  "workflow": "edit"
}

上游请求

{
  "content": [
    {
      "text": "A red paper kite over a quiet harbour at dusk.",
      "type": "text"
    },
    {
      "role": "reference_video",
      "type": "video_url",
      "video_url": {
        "url": "https://example.com/reference.mp4"
      }
    }
  ],
  "duration": -1,
  "generate_audio": false,
  "model": "seedance-2.5",
  "omni_reference_task_type": "edit",
  "output_format": "mp4",
  "ratio": "adaptive",
  "resolution": "480p",
  "return_last_frame": false,
  "seconds": "-1"
}

extend

Intent

{
  "audio": false,
  "duration": -1,
  "output_format": "mp4",
  "prompt": "A red paper kite over a quiet harbour at dusk.",
  "ratio": "adaptive",
  "resolution": "480p",
  "return_last_frame": false,
  "workflow": "extend"
}

上游请求

{
  "content": [
    {
      "text": "A red paper kite over a quiet harbour at dusk.",
      "type": "text"
    },
    {
      "role": "reference_video",
      "type": "video_url",
      "video_url": {
        "url": "https://example.com/reference.mp4"
      }
    }
  ],
  "duration": -1,
  "generate_audio": false,
  "model": "seedance-2.5",
  "omni_reference_task_type": "extend",
  "output_format": "mp4",
  "ratio": "adaptive",
  "resolution": "480p",
  "return_last_frame": false,
  "seconds": "-1"
}