---
title: "Change the speed of an audio file"
method: POST
path: "/v1/audio_speed_changer"
---

# Change the speed of an audio file

`POST /v1/audio_speed_changer`

Processes an audio file to change its playback speed based on a speed factor.

## Response `200`

Successfully initiated audio speed change

- object
  - `success` boolean
  - `conversion_id` string
  - `credit_estimate` number, float
  - `conversion_path` string
  - `message` string

## Other responses

- `400` — Invalid parameters
- `401` — Invalid authentication
- `402` — Insufficient credits
- `404` — User or plan not found
- `500` — Internal server error

---

[API](https://skmtc.net/musicgpt/apis/musicgpt-api.md) · [All operations](https://skmtc.net/musicgpt/apis/musicgpt-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/musicgpt/musicgpt-api/versions/6753dccf4c5d/schema)