Audio & Video Transcriber: Speech to Text, SRT/VTT Subtitles

Turn audio and video files into text, timestamped segments and ready-to-use SRT / VTT subtitles with OpenAI's Whisper large-v3 model — 99 languages, automatic language detection, files of any length.

• Any audio or video format. MP3, WAV, M4A, AAC, OGG, OPUS, FLAC, MP4, MOV, MKV, WebM, AVI… The speech track is extracted automatically.
• Long recordings. Meetings, lectures, podcasts and interviews are split into 10-minute parts and stitched back with continuous timestamps.
• Strong non-English support. Whisper large-v3 handles Ukrainian, Polish, German, Spanish, Russian and 90+ more languages; a vocabulary hint fixes the spelling of names and terms.
• Subtitles included. SRT and WebVTT files with download links, plus segments as JSON.

Why this Actor

	This Actor	Typical alternatives in the Apify Store (Oct 2026)
Price	$5 per 1,000 minutes (30 cents an hour)	$6–28 per 1,000 minutes
Model	Whisper large-v3 — the most accurate Whisper model — for every file	Often smaller, cheaper models, or large-v3 only in a premium mode
Subtitles	SRT + VTT + timestamped JSON segments in every run	Often text only, or subtitles as a paid extra
No API key	Nothing to sign up for; pay per minute through Apify	Some ask for your own OpenAI / Groq key
Long files	Hours-long recordings are split and stitched with continuous timestamps	Tools that send the file to a Whisper API in one request hit its 25 MB limit

Input

{
  "sources": [{ "url": "https://example.com/interview.mp3" }, { "url": "https://example.com/webinar.mp4" }],
  "language": "uk",
  "quality": "accurate",
  "vocabulary": "Lviv, Kyivstar, PrivatBank",
  "subtitles": true
}

Field	Meaning
sources	URLs of audio or video files. Files in your own Apify key-value store work too: set the store's access to "Anyone with ID can read" and use https://api.apify.com/v2/key-value-stores/<store ID>/records/<key> (the Actor runs with limited permissions and does not use your token).
language	ISO code (en, uk, de…) or empty for automatic detection
quality	accurate (Whisper large-v3, default) or fast (large-v3-turbo) — same price
vocabulary	Names and terms to spell correctly
subtitles	Save SRT and VTT files (free)

Output

{
  "url": "https://example.com/interview.mp3",
  "fileName": "interview.mp3",
  "language": "Ukrainian",
  "durationSeconds": 1834.2,
  "billedMinutes": 31,
  "model": "whisper-large-v3",
  "text": "Добрий день! Сьогодні ми поговоримо про…",
  "segments": [{ "start": 0.0, "end": 4.6, "text": "Добрий день!" }],
  "srtUrl": "https://api.apify.com/v2/key-value-stores/.../records/0001-interview.srt?signature=...",
  "vttUrl": "https://api.apify.com/v2/key-value-stores/.../records/0001-interview.vtt?signature=..."
}

A file that cannot be downloaded or has no audio track gets an error field instead and is not charged.

Pricing

Event	Price	What counts
audio-minute	$5 per 1,000 minutes	every started minute of transcribed audio (at least 1 per file)

Plus Apify's standard start fee of $0.05 per 1,000 runs. Subtitles are free. The run transcribes only as many minutes as fit under your maximum charge per run and marks the item with a warning.

Privacy

The speech track is sent to Groq's speech-to-text API, which runs the Whisper model; see Groq's privacy policy. This Actor keeps files only in your own Apify run storage.

Related Actors

• Document to Markdown for AI — PDFs, scans, Office files → Markdown
• Office to PDF & PDF/A · PDF to Image & Image Converter

Open source: github.com/AndriyVK/-apify-document-tools

Use with AI agents and code

• MCP (Claude, Cursor, VS Code, any MCP client): add https://mcp.apify.com?tools=ai_admin/audio-transcriber as an MCP server — the agent gets one tool with this Actor's input schema and pays per use through your Apify account.
• One HTTP call that returns the results:

curl -X POST "https://api.apify.com/v2/acts/ai_admin~audio-transcriber/run-sync-get-dataset-items?token=$APIFY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"sources": [{"url": "https://api.apify.com/v2/key-value-stores/FloomuI2DrQCJazY8/records/speech-en.mp3"}], "language": "en"}'

• Agentic payments: the Actor is enabled for Apify's agentic payments (x402), so autonomous agents can pay per run.

Limits

• YouTube and other streaming pages are not supported — provide a direct link to the media file.
• Maximum download size is 200 MB per file.
• Speaker labels (diarization) are not included.