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# 视频转音乐

POST https://api.elevenlabs.io/v1/music/video-to-music
Content-Type: multipart/form-data

根据一个或多个视频文件生成背景音乐。视频将按顺序合并。可选描述和风格标签会影响生成的音乐。

Reference: https://elevenlabs.io/docs/api-reference/music/video-to-music

## Servers

- `https://api.elevenlabs.io` (Production, default)
- `https://api.us.elevenlabs.io` (Production US)
- `https://api.eu.residency.elevenlabs.io` (Production EU)
- `https://api.in.residency.elevenlabs.io` (Production India)
- `https://api.sg.residency.elevenlabs.io` (Production Singapore)

## Request

### Query parameters

- `output_format` (enum, optional) — 生成音频的输出格式。格式为 codec_sample_rate_bitrate。因此，采样率为 22.05kHz、比特率为 32kbs 的 mp3 表示为 mp3_22050_32。使用 192kbps 比特率的 MP3 需要订阅 Creator 或更高版本。采样率为 44.1kHz 的 PCM 格式需要订阅 Pro 或更高版本。请注意，μ-law 格式（有时写作 mu-law，通常近似写作 u-law）常用于 Twilio 音频输入。
  - Allowed values: `mp3_22050_32`, `mp3_24000_48`, `mp3_44100_32`, `mp3_44100_64`, `mp3_44100_96`, `mp3_44100_128`, `mp3_44100_192`, `pcm_8000`, `pcm_16000`, `pcm_22050`, `pcm_24000`, `pcm_32000`, `pcm_44100`, `pcm_48000`, `ulaw_8000`, `alaw_8000`, `opus_48000_32`, `opus_48000_64`, `opus_48000_96`, `opus_48000_128`, `opus_48000_192`
- `enable_logging` (boolean, optional, default: true) — 当 enable_logging 设为 false 时，该请求将使用零保留模式。零保留模式仅限企业版客户使用。

### Body (multipart/form-data)

This endpoint expects a multipart form with multiple files.

- `videos` (files, required) — 通过 FormData 数组（multipart/form-data）发送的一个或多个视频文件。它们将按顺序合并为一个编解码器。 最多允许 10 个视频，合并后视频总大小不得超过 200MB。 视频总时长最长为 600 秒。请注意，合并多个视频可能会显著增加请求时长。如有可能，请提前合并视频。
- `description` (string, optional) — 可选，用于描述所需音乐的文本。最多允许 4100 个字符。
- `tags` (list of string, optional) — 可选的风格标签列表（例如 ['upbeat', 'cinematic']）。最多可包含 10 个标签。
- `model_id` (enum, optional) — 用于生成的模型。
- `add_sfx` (boolean, optional) — 为 true 时，纳入视频中的 SFX 提示。
- `separate_tracks` (boolean, optional) — 为 true 时，返回包含独立音乐和 SFX 音轨的 ZIP 文件，而非单个混音文件。可借此更灵活地叠加音轨。
- `use_audio_as_reference` (boolean, optional) — 为 true 时，分析视频音轨，并将其流派、BPM、配器、情绪和发展轨迹作为音乐生成的参考特征。
- `sign_with_c2pa` (boolean, optional) — 是否使用 C2PA 为生成的歌曲签名。仅适用于 mp3 文件。

## Response

### 200

与视频匹配的生成音频文件。Content-Type 和文件扩展名取决于 output_format 参数（默认为 mp3）。

- File download.

## Errors

### 403 Forbidden Error

需要订阅。

- `any`

### 422 Unprocessable Entity Error

验证错误（例如视频无效或缺失）。

- `any`

## Examples

**Request**

```json
{
  "videos": [
    "<file: string>"
  ]
}
```

**SDK Code**

```python
import requests

url = "https://api.elevenlabs.io/v1/music/video-to-music"

files = { "videos": "open('string', 'rb')" }
payload = {
    "add_sfx": ,
    "description": ,
    "model_id": ,
    "separate_tracks": ,
    "sign_with_c2pa": ,
    "tags": ,
    "use_audio_as_reference": 
}

response = requests.post(url, data=payload, files=files)

print(response.json())
```

```javascript
const url = 'https://api.elevenlabs.io/v1/music/video-to-music';
const form = new FormData();
form.append('add_sfx', '');
form.append('description', '');
form.append('model_id', '');
form.append('separate_tracks', '');
form.append('sign_with_c2pa', '');
form.append('tags', '');
form.append('use_audio_as_reference', '');
form.append('videos', 'string');

const options = {method: 'POST'};

options.body = form;

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.elevenlabs.io/v1/music/video-to-music"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"add_sfx\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_id\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"separate_tracks\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"sign_with_c2pa\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tags\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"use_audio_as_reference\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"videos\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001--\r\n")

	req, _ := http.NewRequest("POST", url, payload)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.elevenlabs.io/v1/music/video-to-music")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"add_sfx\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_id\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"separate_tracks\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"sign_with_c2pa\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tags\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"use_audio_as_reference\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"videos\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001--\r\n"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.elevenlabs.io/v1/music/video-to-music")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"add_sfx\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_id\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"separate_tracks\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"sign_with_c2pa\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tags\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"use_audio_as_reference\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"videos\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001--\r\n")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.elevenlabs.io/v1/music/video-to-music', [
  'multipart' => [
    [
        'name' => 'videos',
        'filename' => 'string',
        'contents' => null
    ]
  ]
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.elevenlabs.io/v1/music/video-to-music");
var request = new RestRequest(Method.POST);
request.AddParameter("undefined", "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"add_sfx\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_id\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"separate_tracks\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"sign_with_c2pa\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"tags\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"use_audio_as_reference\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"videos\"; filename=\"string\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001--\r\n", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation
let parameters = [
  [
    "name": "add_sfx",
    "value": 
  ],
  [
    "name": "description",
    "value": 
  ],
  [
    "name": "model_id",
    "value": 
  ],
  [
    "name": "separate_tracks",
    "value": 
  ],
  [
    "name": "sign_with_c2pa",
    "value": 
  ],
  [
    "name": "tags",
    "value": 
  ],
  [
    "name": "use_audio_as_reference",
    "value": 
  ],
  [
    "name": "videos",
    "fileName": "string"
  ]
]

let boundary = "---011000010111000001101001"

var body = ""
var error: NSError? = nil
for param in parameters {
  let paramName = param["name"]!
  body += "--\(boundary)\r\n"
  body += "Content-Disposition:form-data; name=\"\(paramName)\""
  if let filename = param["fileName"] {
    let contentType = param["content-type"]!
    let fileContent = String(contentsOfFile: filename, encoding: String.Encoding.utf8)
    if (error != nil) {
      print(error as Any)
    }
    body += "; filename=\"\(filename)\"\r\n"
    body += "Content-Type: \(contentType)\r\n\r\n"
    body += fileContent
  } else if let paramValue = param["value"] {
    body += "\r\n\r\n\(paramValue)"
  }
}

let request = NSMutableURLRequest(url: NSURL(string: "https://api.elevenlabs.io/v1/music/video-to-music")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```