# Speech-to-Text Converter (`moving_beacon-owner1/my-actor-72`) Actor

Introducing the Speech-to-Text Converter — Apify Actor! Transform your audio into text effortlessly with our powerful, serverless multi-engine transcription solution on Apify. Experience seamless and accurate transcription like never before!

- **URL**: https://apify.com/moving\_beacon-owner1/my-actor-72.md
- **Developed by:** [Jamshaid Arif](https://apify.com/moving_beacon-owner1) (community)
- **Categories:** AI, Automation, Developer tools
- **Stats:** 1 total users, 0 monthly users, 0.0% runs succeeded, NaN bookmarks
- **User rating**: No ratings yet

## Pricing

from $10.00 / 1,000 results

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js.md):

```bash
npm install apify-client
```

In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.md):

```bash
pip install apify-client
```

In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md):

````bash
# MacOS / Linux
curl -fsSL https://apify.com/install-cli.sh | bash
# Windows
irm https://apify.com/install-cli.ps1 | iex
```bash

In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/platform/integrations/mcp.md).

If your project is in a different language, use the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).


# README

## 🎙️ Speech-to-Text Converter — Apify Actor

Serverless **multi-engine speech-to-text** transcription on [Apify](https://apify.com).

### 🛠️ Engines

| Engine | Cost | Internet | Best For |
|--------|------|----------|----------|
| **Whisper Local** | Free | No | Long files, best accuracy, 45+ languages |
| **Google Speech** | Free | Yes | Quick short clips, real-time results |
| **Whisper API** | Paid | Yes | Fast cloud processing, large files |

### 📁 Supported Formats

**Audio:** WAV, MP3, FLAC, OGG, M4A, AAC, WMA, OPUS  
**Video:** MP4, MKV, AVI, MOV, WEBM, FLV (audio auto-extracted)  
**Output:** TXT, SRT subtitles, WebVTT, JSON

### ⚡ Quick Start

#### Via Apify Console

1. Select an **Engine** (Whisper Local recommended)
2. Paste the **Input File URL** (direct download link)
3. Choose **Language** and **Output Format**
4. Click **Start**

#### Via API

```bash
curl -X POST "https://api.apify.com/v2/acts/<ACTOR_ID>/runs?token=<TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{
    "engine": "whisper_local",
    "input_file_url": "https://example.com/audio.mp3",
    "language": "en",
    "whisper_model": "small",
    "output_format": "srt"
  }'
````

### 📥 Input

| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `engine` | string | `whisper_local` | `whisper_local`, `google`, or `whisper_api` |
| `input_file_url` | string | — | Direct URL to media file |
| `language` | string | `en` | Language code or empty for auto-detect |
| `whisper_model` | string | `small` | `tiny`, `base`, `small`, `medium`, `large` |
| `openai_api_key` | string | — | OpenAI key (whisper\_api only) |
| `output_format` | string | `txt` | `txt`, `srt`, `vtt`, `json` |
| `max_file_size_mb` | int | `500` | Max file size limit |
| `google_chunk_seconds` | int | `55` | Chunk size for Google engine |

### 📤 Output

**Dataset** contains metadata:

```json
{
    "status": "success",
    "engine": "whisper_local (small)",
    "language_detected": "en",
    "input_file": "interview.mp3",
    "output_url": "https://api.apify.com/.../interview_transcription.srt",
    "duration_audio_sec": 342.5,
    "processing_time_sec": 28.3,
    "character_count": 4521,
    "segment_count": 87,
    "text_preview": "First 500 characters of the transcription...",
    "message": "Transcribed with Whisper 'small' on CPU."
}
```

**Key-Value Store** contains:

- `interview_transcription.txt/srt/vtt/json` — the output file (downloadable via `output_url`)
- `FULL_RESULT` — complete JSON with full text + all segments

### 🌍 Languages (45+)

English, Spanish, French, German, Italian, Portuguese, Chinese, Japanese, Korean, Arabic, Hindi, Russian, Turkish, Urdu, Dutch, Polish, Swedish, Danish, Finnish, Norwegian, Greek, Czech, Romanian, Hungarian, Thai, Vietnamese, Indonesian, Malay, Ukrainian, Bulgarian, Croatian, Slovak, Slovenian, Serbian, Hebrew, Bengali, Tamil, Telugu, Malayalam, Kannada, Marathi, Gujarati, Punjabi, Swahili, Afrikaans, Filipino.

# Actor input Schema

## `engine` (type: `string`):

Which speech recognition engine to use.

## `input_file_url` (type: `string`):

Direct download URL to your audio or video file. Supported formats: WAV, MP3, FLAC, OGG, M4A, AAC, MP4, MKV, AVI, MOV, WEBM.

## `language` (type: `string`):

Language of the audio. Leave empty for auto-detection (Whisper only).

## `whisper_model` (type: `string`):

Model size for Whisper Local engine. Larger = more accurate but slower and more memory.

## `openai_api_key` (type: `string`):

Your OpenAI API key. Required only for the Whisper API engine.

## `output_format` (type: `string`):

Format of the transcription output file.

## `max_file_size_mb` (type: `integer`):

Maximum allowed file size in MB. Files larger than this will be rejected. Default: 500 MB.

## `google_chunk_seconds` (type: `integer`):

Google Speech has a ~60s limit per request. Audio is split into chunks of this duration. Only used with Google engine.

## Actor input object example

```json
{
  "engine": "whisper_local",
  "language": "en",
  "whisper_model": "small",
  "output_format": "txt",
  "max_file_size_mb": 500,
  "google_chunk_seconds": 55
}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {};

// Run the Actor and wait for it to finish
const run = await client.actor("moving_beacon-owner1/my-actor-72").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {}

# Run the Actor and wait for it to finish
run = client.actor("moving_beacon-owner1/my-actor-72").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{}' |
apify call moving_beacon-owner1/my-actor-72 --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=moving_beacon-owner1/my-actor-72",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

```json
{
    "openapi": "3.0.1",
    "info": {
        "title": "Speech-to-Text Converter",
        "description": "Introducing the Speech-to-Text Converter — Apify Actor! Transform your audio into text effortlessly with our powerful, serverless multi-engine transcription solution on Apify. Experience seamless and accurate transcription like never before!",
        "version": "0.0",
        "x-build-id": "xy6QqX8eAPRBty4C0"
    },
    "servers": [
        {
            "url": "https://api.apify.com/v2"
        }
    ],
    "paths": {
        "/acts/moving_beacon-owner1~my-actor-72/run-sync-get-dataset-items": {
            "post": {
                "operationId": "run-sync-get-dataset-items-moving_beacon-owner1-my-actor-72",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        },
        "/acts/moving_beacon-owner1~my-actor-72/runs": {
            "post": {
                "operationId": "runs-sync-moving_beacon-owner1-my-actor-72",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor and returns information about the initiated run in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/runsResponseSchema"
                                }
                            }
                        }
                    }
                }
            }
        },
        "/acts/moving_beacon-owner1~my-actor-72/run-sync": {
            "post": {
                "operationId": "run-sync-moving_beacon-owner1-my-actor-72",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        }
    },
    "components": {
        "schemas": {
            "inputSchema": {
                "type": "object",
                "required": [
                    "engine"
                ],
                "properties": {
                    "engine": {
                        "title": "Transcription Engine",
                        "enum": [
                            "whisper_local",
                            "google",
                            "whisper_api"
                        ],
                        "type": "string",
                        "description": "Which speech recognition engine to use.",
                        "default": "whisper_local"
                    },
                    "input_file_url": {
                        "title": "Input File URL",
                        "type": "string",
                        "description": "Direct download URL to your audio or video file. Supported formats: WAV, MP3, FLAC, OGG, M4A, AAC, MP4, MKV, AVI, MOV, WEBM."
                    },
                    "language": {
                        "title": "Language",
                        "enum": [
                            "",
                            "en",
                            "es",
                            "fr",
                            "de",
                            "it",
                            "pt",
                            "zh",
                            "ja",
                            "ko",
                            "ar",
                            "hi",
                            "ru",
                            "tr",
                            "ur",
                            "nl",
                            "pl",
                            "sv",
                            "da",
                            "fi",
                            "no",
                            "el",
                            "cs",
                            "ro",
                            "hu",
                            "th",
                            "vi",
                            "id",
                            "ms",
                            "uk",
                            "bg",
                            "hr",
                            "sk",
                            "sl",
                            "sr",
                            "he",
                            "bn",
                            "ta",
                            "te",
                            "ml",
                            "kn",
                            "mr",
                            "gu",
                            "pa",
                            "sw",
                            "af",
                            "fil"
                        ],
                        "type": "string",
                        "description": "Language of the audio. Leave empty for auto-detection (Whisper only).",
                        "default": "en"
                    },
                    "whisper_model": {
                        "title": "Whisper Model Size",
                        "enum": [
                            "tiny",
                            "base",
                            "small",
                            "medium",
                            "large"
                        ],
                        "type": "string",
                        "description": "Model size for Whisper Local engine. Larger = more accurate but slower and more memory.",
                        "default": "small"
                    },
                    "openai_api_key": {
                        "title": "OpenAI API Key",
                        "type": "string",
                        "description": "Your OpenAI API key. Required only for the Whisper API engine."
                    },
                    "output_format": {
                        "title": "Output Format",
                        "enum": [
                            "txt",
                            "srt",
                            "vtt",
                            "json"
                        ],
                        "type": "string",
                        "description": "Format of the transcription output file.",
                        "default": "txt"
                    },
                    "max_file_size_mb": {
                        "title": "Max File Size (MB)",
                        "minimum": 1,
                        "maximum": 2000,
                        "type": "integer",
                        "description": "Maximum allowed file size in MB. Files larger than this will be rejected. Default: 500 MB.",
                        "default": 500
                    },
                    "google_chunk_seconds": {
                        "title": "Google Chunk Duration (seconds)",
                        "minimum": 10,
                        "maximum": 59,
                        "type": "integer",
                        "description": "Google Speech has a ~60s limit per request. Audio is split into chunks of this duration. Only used with Google engine.",
                        "default": 55
                    }
                }
            },
            "runsResponseSchema": {
                "type": "object",
                "properties": {
                    "data": {
                        "type": "object",
                        "properties": {
                            "id": {
                                "type": "string"
                            },
                            "actId": {
                                "type": "string"
                            },
                            "userId": {
                                "type": "string"
                            },
                            "startedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "finishedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "status": {
                                "type": "string",
                                "example": "READY"
                            },
                            "meta": {
                                "type": "object",
                                "properties": {
                                    "origin": {
                                        "type": "string",
                                        "example": "API"
                                    },
                                    "userAgent": {
                                        "type": "string"
                                    }
                                }
                            },
                            "stats": {
                                "type": "object",
                                "properties": {
                                    "inputBodyLen": {
                                        "type": "integer",
                                        "example": 2000
                                    },
                                    "rebootCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "restartCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "resurrectCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "computeUnits": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "options": {
                                "type": "object",
                                "properties": {
                                    "build": {
                                        "type": "string",
                                        "example": "latest"
                                    },
                                    "timeoutSecs": {
                                        "type": "integer",
                                        "example": 300
                                    },
                                    "memoryMbytes": {
                                        "type": "integer",
                                        "example": 1024
                                    },
                                    "diskMbytes": {
                                        "type": "integer",
                                        "example": 2048
                                    }
                                }
                            },
                            "buildId": {
                                "type": "string"
                            },
                            "defaultKeyValueStoreId": {
                                "type": "string"
                            },
                            "defaultDatasetId": {
                                "type": "string"
                            },
                            "defaultRequestQueueId": {
                                "type": "string"
                            },
                            "buildNumber": {
                                "type": "string",
                                "example": "1.0.0"
                            },
                            "containerUrl": {
                                "type": "string"
                            },
                            "usage": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "integer",
                                        "example": 1
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "usageTotalUsd": {
                                "type": "number",
                                "example": 0.00005
                            },
                            "usageUsd": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "number",
                                        "example": 0.00005
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
```
