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# Separación de pistas

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

Separa un archivo de audio en pistas individuales. Esta ruta de API puede tener una latencia elevada, según la duración del archivo de audio.

Reference: https://elevenlabs.io/docs/api-reference/music/separate-stems

## 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) — Output format of the generated audio. Formatted as codec_sample_rate_bitrate. So an mp3 with 22.05kHz sample rate at 32kbs is represented as mp3_22050_32. MP3 with 192kbps bitrate requires you to be subscribed to Creator tier or above. PCM with 44.1kHz sample rate requires you to be subscribed to Pro tier or above. Note that the μ-law format (sometimes written mu-law, often approximated as u-law) is commonly used for Twilio audio inputs.
  - 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) — Cuando enable_logging se establece en false, se usará el modo de retención cero para la solicitud. El modo de retención cero solo puede utilizarse por clientes Enterprise.

### Body (multipart/form-data)

This endpoint expects a multipart form containing a file.

- `file` (file, required) — El archivo de audio que se separará en pistas.
- `stem_variation_id` (enum, optional) — El ID de la variación de pista que se usará.
- `sign_with_c2pa` (boolean, optional) — Si se firma la canción generada con C2PA. Solo aplicable a archivos mp3.

## Response

### 200

Archivo ZIP que contiene pistas de audio separadas. Cada pista se proporciona como un archivo de audio independiente en el formato de salida solicitado.

- File download.

## Errors

### 422 Unprocessable Entity Error

Error de validación

- `detail` (list of ValidationError, optional)

## Types

### ValidationError

- `loc` (list of ValidationErrorLocItems, required)
- `msg` (string, required)
- `type` (string, required)

### ValidationErrorLocItems

## Examples

**Request**

```json
{
  "file": "<file: string>"
}
```

**SDK Code**

```python
import requests

url = "https://api.elevenlabs.io/v1/music/stem-separation"

files = { "file": "open('string', 'rb')" }
payload = {
    "sign_with_c2pa": ,
    "stem_variation_id": 
}

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

print(response.json())
```

```javascript
const url = 'https://api.elevenlabs.io/v1/music/stem-separation';
const form = new FormData();
form.append('file', 'string');
form.append('sign_with_c2pa', '');
form.append('stem_variation_id', '');

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/stem-separation"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\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=\"stem_variation_id\"\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/stem-separation")

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=\"file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\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=\"stem_variation_id\"\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/stem-separation")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\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=\"stem_variation_id\"\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/stem-separation', [
  'multipart' => [
    [
        'name' => 'file',
        'filename' => 'string',
        'contents' => null
    ]
  ]
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.elevenlabs.io/v1/music/stem-separation");
var request = new RestRequest(Method.POST);
request.AddParameter("undefined", "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"string\"\r\nContent-Type: application/octet-stream\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=\"stem_variation_id\"\r\n\r\n\r\n-----011000010111000001101001--\r\n", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation
let parameters = [
  [
    "name": "file",
    "fileName": "string"
  ],
  [
    "name": "sign_with_c2pa",
    "value": 
  ],
  [
    "name": "stem_variation_id",
    "value": 
  ]
]

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/stem-separation")! 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()
```