# Output Presets | AudioDN Docs

> API endpoints for configuring output presets. Set up transcoding profiles, preview clips, waveform generation, and quality tiers.

Source: https://audiodeliverynetwork.com/docs/api/output-presets/

---

# Output Presets

An **output preset** is a reusable recipe that defines what AudioDN generates from every upload—a transcode, preview, waveform, or analysis—and each result becomes an **output** on the track. Organization-wide presets are created in the dashboard. You can also add a **track-scoped output preset** to a single, already-processed track via the API. (Output presets were previously called variants; `/v1/variant` remains a supported alias.)

GET `/v1/output_preset`

Returns a list of output presets for an organization

#### Parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `limit` | number | Optional | Maximum number of presets to return |
| `offset` | number | Optional | Number of presets to skip |

#### Example Request

    

```
curl -X GET "https://api.audiodelivery.net/v1/output_preset" \
  -H "Authorization: Bearer YOUR_API_KEY"
```

```
const response = await fetch('https://api.audiodelivery.net/v1/output_preset', {
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
  }
});

const data = await response.json();
```

```
import Foundation

func performRequest() async throws {
    var request = URLRequest(url: URL(string: "https://api.audiodelivery.net/v1/output_preset")!)
    request.httpMethod = "GET"
    request.setValue("Bearer YOUR_API_KEY", forHTTPHeaderField: "Authorization")
    let (data, _) = try await URLSession.shared.data(for: request)
    let json = try JSONSerialization.jsonObject(with: data) as! [String: Any]
    // use json
}
```

```
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import okhttp3.*

val client = OkHttpClient()

suspend fun performRequest(): String = withContext(Dispatchers.IO) {
    val request = Request.Builder()
        .url("https://api.audiodelivery.net/v1/output_preset")
        .addHeader("Authorization", "Bearer YOUR_API_KEY")
        .build()
    val response = client.newCall(request).execute()
    response.body?.string() ?: error("Empty response body")
}
```

```
import 'dart:convert';
import 'package:http/http.dart' as http;

Future<Map<String, dynamic>> performRequest() async {
  final response = await http.get(
    Uri.parse("https://api.audiodelivery.net/v1/output_preset"),
    headers: {
      "Authorization": "Bearer YOUR_API_KEY",
    },
  );
  if (response.statusCode < 200 || response.statusCode >= 300) {
    throw Exception('Request failed: ${response.statusCode}');
  }
  return jsonDecode(response.body) as Map<String, dynamic>;
}
```

#### Response

```
{
"ok": true,
"api_request_id": "uuid",
"count": 0,
"output_presets": [
  {
    "id": "uuid",
    "organization_id": "uuid",
    "output_type_id": "string",
    "index": "hq",
    "props": {}
  }
]
}
```

Legacy alias: `GET /v1/variant` returns the same data under `variants` with `variant_type_id`.

GET `/v1/output_preset/:output_preset_id`

Returns details about a specific output preset

#### Parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `output_preset_id` | uuid | Required | The ID of the output preset to retrieve (path parameter) |

#### Example Request

    

```
curl -X GET "https://api.audiodelivery.net/v1/output_preset/OUTPUT_PRESET_ID" \
  -H "Authorization: Bearer YOUR_API_KEY"
```

```
const response = await fetch('https://api.audiodelivery.net/v1/output_preset/OUTPUT_PRESET_ID', {
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
  }
});

const data = await response.json();
```

```
import Foundation

func performRequest() async throws {
    var request = URLRequest(url: URL(string: "https://api.audiodelivery.net/v1/output_preset/OUTPUT_PRESET_ID")!)
    request.httpMethod = "GET"
    request.setValue("Bearer YOUR_API_KEY", forHTTPHeaderField: "Authorization")
    let (data, _) = try await URLSession.shared.data(for: request)
    let json = try JSONSerialization.jsonObject(with: data) as! [String: Any]
    // use json
}
```

```
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import okhttp3.*

val client = OkHttpClient()

suspend fun performRequest(): String = withContext(Dispatchers.IO) {
    val request = Request.Builder()
        .url("https://api.audiodelivery.net/v1/output_preset/OUTPUT_PRESET_ID")
        .addHeader("Authorization", "Bearer YOUR_API_KEY")
        .build()
    val response = client.newCall(request).execute()
    response.body?.string() ?: error("Empty response body")
}
```

```
import 'dart:convert';
import 'package:http/http.dart' as http;

Future<Map<String, dynamic>> performRequest() async {
  final response = await http.get(
    Uri.parse("https://api.audiodelivery.net/v1/output_preset/OUTPUT_PRESET_ID"),
    headers: {
      "Authorization": "Bearer YOUR_API_KEY",
    },
  );
  if (response.statusCode < 200 || response.statusCode >= 300) {
    throw Exception('Request failed: ${response.statusCode}');
  }
  return jsonDecode(response.body) as Map<String, dynamic>;
}
```

#### Response

```
{
"ok": true,
"api_request_id": "uuid",
"output_preset_id": "uuid",
"output_preset": {
  "id": "uuid",
  "organization_id": "uuid",
  "output_type_id": "string",
  "index": "hq",
  "props": {}
}
}
```

Legacy alias: `GET /v1/variant/:variant_id`.

POST `/v1/track/:track_id/output`

Creates a track-scoped output preset and queues processing. Returns the preset id; the generated output appears after processing.

Appends a new output for an existing track. The track is moved to `processing` while the new result is generated, then automatically returns to `ready`. Only `transcode` and `preview` are supported via this endpoint, and only lossy output codecs are allowed (`aac`, `mp3`, `ogg`, `opus`). Codec settings are optional and default to `aac` at `128` kbps. Accepts `output_type_id` or legacy `variant_type_id`.

#### Common parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `track_id` | uuid | Required | The track to append the output for (path parameter) |
| `output_type_id` | string | Required | 'transcode' (full-length file) or 'preview' (short clip). Legacy clients may send variant\_type\_id instead. |
| `index` | string | Required | Delivery name for the preset (2–64 chars, letters/numbers/\_/-). Must not collide with an existing organization or track preset |

#### 

When `output_type_id` is `“transcode”`

Full-length alternate format. Example: `{ "output_type_id": "transcode", "index": "mp3", "codec": "mp3", "bitrate": 192 }`.

#### Transcode parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `codec` | string | Optional | Output codec: aac (default), mp3, ogg, or opus. Lossless codecs (flac, alac) are not allowed |
| `bitrate` | number | Optional | Output bitrate in kbps, 12–320 (default 128). Only applies to codecs that use bitrate |
| `is_stereo` | boolean | Optional | Keep stereo output (default true). When false, output is mixed down to mono |
| `is_strip_tags` | boolean | Optional | Strip metadata tags from the output (default true) |
| `is_strip_cover` | boolean | Optional | Strip embedded cover art from the output (default true) |

#### 

When `output_type_id` is `“preview”`

Short clip cut from the track. Also accepts the **Transcode parameters** above for the output audio (codec defaults to `aac` / `128`). Clip start is always a percentage of track duration (`preview_start_percent`).

#### Preview parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `preview_type` | string | Optional | 'seconds' (default) or 'percent' — how the clip length is measured |
| `preview_seconds` | number | Optional | When preview\_type is 'seconds': clip length in seconds (default 60) |
| `preview_min_percent` | number | Optional | When preview\_type is 'seconds': minimum clip length as a percent of duration, 0–100 (default 0) |
| `preview_max_percent` | number | Optional | When preview\_type is 'seconds': maximum clip length as a percent of duration, 0–100 (default 50) |
| `preview_percent` | number | Optional | When preview\_type is 'percent': clip length as a percent of duration, 0–100 (default 25) |
| `preview_min_seconds` | number | Optional | When preview\_type is 'percent': minimum clip length in seconds (default 0) |
| `preview_max_seconds` | number | Optional | When preview\_type is 'percent': maximum clip length in seconds (default 90) |
| `preview_start_percent` | number | Optional | Where the clip starts, as a percent of total duration, 0–100 (default 25). Always used regardless of preview\_type |

#### Example Request

    

```
curl -X POST "https://api.audiodelivery.net/v1/track/TRACK_ID/output" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "output_type_id": "preview",
  "index": "preview",
  "preview_type": "seconds",
  "preview_seconds": 3,
  "preview_min_percent": 0,
  "preview_max_percent": 100,
  "preview_start_percent": 25
}'
```

```
const payload = {
  "output_type_id": "preview",
  "index": "preview",
  "preview_type": "seconds",
  "preview_seconds": 3,
  "preview_min_percent": 0,
  "preview_max_percent": 100,
  "preview_start_percent": 25
};

const response = await fetch('https://api.audiodelivery.net/v1/track/TRACK_ID/output', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify(payload)
});

const data = await response.json();
```

```
import Foundation

func performRequest() async throws {
    var request = URLRequest(url: URL(string: "https://api.audiodelivery.net/v1/track/TRACK_ID/output")!)
    request.httpMethod = "POST"
    request.setValue("Bearer YOUR_API_KEY", forHTTPHeaderField: "Authorization")
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")
    let bodyJSON = """
{
  "output_type_id": "preview",
  "index": "preview",
  "preview_type": "seconds",
  "preview_seconds": 3,
  "preview_min_percent": 0,
  "preview_max_percent": 100,
  "preview_start_percent": 25
}
"""
    request.httpBody = bodyJSON.data(using: .utf8)
    let (data, _) = try await URLSession.shared.data(for: request)
    let json = try JSONSerialization.jsonObject(with: data) as! [String: Any]
    // use json
}
```

```
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import okhttp3.*
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.RequestBody.Companion.toRequestBody

val client = OkHttpClient()

suspend fun performRequest(): String = withContext(Dispatchers.IO) {
    val body = """{
  "output_type_id": "preview",
  "index": "preview",
  "preview_type": "seconds",
  "preview_seconds": 3,
  "preview_min_percent": 0,
  "preview_max_percent": 100,
  "preview_start_percent": 25
}""".toRequestBody("application/json".toMediaType())
    val request = Request.Builder()
        .url("https://api.audiodelivery.net/v1/track/TRACK_ID/output")
        .post(body)
        .addHeader("Authorization", "Bearer YOUR_API_KEY")
        .addHeader("Content-Type", "application/json")
        .build()
    val response = client.newCall(request).execute()
    response.body?.string() ?: error("Empty response body")
}
```

```
import 'dart:convert';
import 'package:http/http.dart' as http;

Future<Map<String, dynamic>> performRequest() async {
  final response = await http.post(
    Uri.parse("https://api.audiodelivery.net/v1/track/TRACK_ID/output"),
    headers: {
      "Authorization": "Bearer YOUR_API_KEY",
      "Content-Type": "application/json",
    },
    body: jsonEncode({
  "output_type_id": "preview",
  "index": "preview",
  "preview_type": "seconds",
  "preview_seconds": 3,
  "preview_min_percent": 0,
  "preview_max_percent": 100,
  "preview_start_percent": 25
}),
  );
  if (response.statusCode < 200 || response.statusCode >= 300) {
    throw Exception('Request failed: ${response.statusCode}');
  }
  return jsonDecode(response.body) as Map<String, dynamic>;
}
```

#### Response

```
{
"ok": true,
"api_request_id": "uuid",
"track_id": "uuid",
"output_preset_id": "uuid",
"job_id": "uuid",
"output_preset": {
  "id": "uuid",
  "organization_id": "uuid",
  "track_id": "uuid",
  "output_type_id": "preview",
  "index": "preview",
  "props": {
    "preview_type": "seconds",
    "preview_seconds": 3,
    "preview_min_percent": 0,
    "preview_max_percent": 100,
    "preview_start_percent": 25,
    "codec": "aac",
    "bitrate": 128,
    "is_stereo": true,
    "is_strip_tags": true,
    "is_strip_cover": true
  }
}
}
```

Legacy alias: `POST /v1/track/:track_id/variant`.