M4A to SRT. Completely free.
Listens to your M4A and writes a timed SRT subtitle file. It runs on your own device, so nothing gets uploaded, and there's no paid version.
M4A to SRT
What to expect
Listens to your M4A and writes a timed SRT subtitle file.
How it works
- Drop your recording or video on this page.
- A model is already chosen for your device. Pick a language or a different model if you want to.
- Press Transcribe and watch the text appear. Click any line to jump there or fix it, then save it as TXT, SRT, VTT or JSON.
Questions
Is m4a to srt here really free?
Yes, completely. Every tool is free, and there's no paid version, account, watermark or daily limit.
Do my files get uploaded?
No. The model runs on your own device, so your recording never leaves it. Once the model has downloaded, this works offline too.
Is there a catch, or a limit?
No. There is no account, no paid version and no monthly quota, because your device does the work rather than a server someone has to pay for.
How accurate is it?
It uses OpenAI's Whisper, one of the most accurate speech recognition models available. Clear speech comes out very well on any size; for accents, noise or several speakers, choose Small or Large Turbo if your device can run them.
Which languages does it understand?
It detects the language by itself, and handles about 100 of them. You can also pick the language, or translate any of them into English.
Which model will it use?
It checks your graphics card and memory, then suggests the largest model that will run well, from 41 MB up to 563 MB. You can choose another. Each one downloads once and is then kept on your device. Results vary with your device's specs, so use your most powerful computer for the best results.
Can I fix mistakes?
Yes. Click any line of the transcript and type. Your changes carry through to every format you download.
How long can a recording be?
As long as your device has memory for: hours are fine on a computer. Long silences are skipped, so they take no time.
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Ready when you are.
- Completely free
- Nothing uploaded
- No account
- No watermark