跳转到主要内容
POST
/
v1
/
music
/
generations
/
extendFlowMusic
curl --request POST \
  --url https://api.apimart.ai/v1/music/generations/extendFlowMusic \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "flowmusic",
    "clip_id": "abc123-def456",
    "extend_from_s": 30,
    "extend_s": 60,
    "instruction": "延续主歌旋律,加入弦乐"
  }'
import requests

url = "https://api.apimart.ai/v1/music/generations/extendFlowMusic"

payload = {
    "model": "flowmusic",
    "clip_id": "abc123-def456",
    "extend_from_s": 30,
    "extend_s": 60,
    "instruction": "延续主歌旋律,加入弦乐"
}

headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
const url = "https://api.apimart.ai/v1/music/generations/extendFlowMusic";

const payload = {
  model: "flowmusic",
  clip_id: "abc123-def456",
  extend_from_s: 30,
  extend_s: 60,
  instruction: "延续主歌旋律,加入弦乐"
};

const headers = {
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
};

fetch(url, {
  method: "POST",
  headers: headers,
  body: JSON.stringify(payload)
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));
{
  "code": 200,
  "data": [
    {
      "status": "submitted",
      "task_id": "task_01KWXVCYB70YJ1WY9X22RVYRNP"
    }
  ]
}
{
  "error": {
    "message": "clip_id is required",
    "type": "invalid_request",
    "param": "",
    "code": "invalid_request"
  }
}
{
  "error": {
    "message": "余额不足",
    "type": "invalid_request",
    "param": "",
    "code": "quota_not_enough"
  }
}
{
  "error": {
    "message": "当前分组容量饱和,请稍后重试",
    "type": "rate_limit_error",
    "param": "",
    "code": "rate_limit_error"
  }
}
curl --request POST \
  --url https://api.apimart.ai/v1/music/generations/extendFlowMusic \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "flowmusic",
    "clip_id": "abc123-def456",
    "extend_from_s": 30,
    "extend_s": 60,
    "instruction": "延续主歌旋律,加入弦乐"
  }'
import requests

url = "https://api.apimart.ai/v1/music/generations/extendFlowMusic"

payload = {
    "model": "flowmusic",
    "clip_id": "abc123-def456",
    "extend_from_s": 30,
    "extend_s": 60,
    "instruction": "延续主歌旋律,加入弦乐"
}

headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
const url = "https://api.apimart.ai/v1/music/generations/extendFlowMusic";

const payload = {
  model: "flowmusic",
  clip_id: "abc123-def456",
  extend_from_s: 30,
  extend_s: 60,
  instruction: "延续主歌旋律,加入弦乐"
};

const headers = {
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
};

fetch(url, {
  method: "POST",
  headers: headers,
  body: JSON.stringify(payload)
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));
{
  "code": 200,
  "data": [
    {
      "status": "submitted",
      "task_id": "task_01KWXVCYB70YJ1WY9X22RVYRNP"
    }
  ]
}
{
  "error": {
    "message": "clip_id is required",
    "type": "invalid_request",
    "param": "",
    "code": "invalid_request"
  }
}
{
  "error": {
    "message": "余额不足",
    "type": "invalid_request",
    "param": "",
    "code": "quota_not_enough"
  }
}
{
  "error": {
    "message": "当前分组容量饱和,请稍后重试",
    "type": "rate_limit_error",
    "param": "",
    "code": "rate_limit_error"
  }
}

认证

Authorization
string
必填
所有接口均需要使用 Bearer Token 进行认证获取 API Key:访问 API Key 管理页面 获取您的 API Key使用时在请求头中添加:
Authorization: Bearer YOUR_API_KEY

请求参数

model
string
必填
模型名称,固定传 "flowmusic"(大小写不敏感)
clip_id
string
必填
源音乐 clip_id,来自已成功任务的 result.music[].clip_id
源任务必须已成功。外部音频可先通过上传音频导入换取 clip_id。
extend_from_s
number
必填
开始续写的时间点(秒)不能超过源 clip 时长
extend_s
number
必填
续写时长(秒)最大值:164
instruction
string
必填
续写音乐的编辑指令示例:"延续主歌旋律,加入弦乐"
title
string
续写后音乐标题
seed
string
随机种子,用于复现结果

响应

code
integer
响应状态码,成功时为 200
data
array
返回数据数组

使用场景

场景 1:从副歌处续写 60 秒

{
  "model": "flowmusic",
  "clip_id": "abc123-def456",
  "extend_from_s": 30,
  "extend_s": 60,
  "instruction": "延续主歌旋律,加入弦乐"
}
查询任务结果音乐延伸为异步任务,提交后会返回 task_id。使用 获取任务状态 接口查询生成进度和结果。延伸产物是新的 clip_id,后续操作请使用新 clip_id。

任务完成结果示例

查询返回示例GET /v1/music/tasks/{task_id}):
{
  "code": 200,
  "data": {
    "id": "task_01KWXVCYB70YJ1WY9X22RVYRNP",
    "status": "completed",
    "progress": 100,
    "created": 1783413242,
    "completed": 1783413292,
    "actual_time": 50,
    "cost": 0.048,
    "credits_cost": 0.48,
    "result": {
      "music": [
        {
          "clip_id": "d2f589ea-5390-4e83-8e2f-4517420408fa",
          "title": "Untitled (Extended)",
          "duration_seconds": "39.95733333",
          "create_time": "2026-07-07T08:34:33.240020Z",
          "lyrics": "waking up to the morning light,\n...",
          "lyrics_id": "0452451b-9e54-5d9f-8437-8bff97c7bbc8",
          "lyrics_timing_markers": [[0, 12], [129, 20]],
          "audio_url": "https://cdn.apimart.ai/audio/flowmusic_d2f589ea.m4a",
          "wav_url": "https://cdn.apimart.ai/audio/flowmusic_d2f589ea.wav",
          "image_url": "https://cdn.apimart.ai/image/flowmusic_d2f589ea_cover.jpg"
        }
      ]
    }
  }
}