Convert MP4 to M4A
MP4 with H.264 plays on practically every phone, browser, TV and social network. M4A (AAC audio) is smaller than MP3 at the same quality and plays natively on Apple devices. Keep just the sound — a talk, a song, an interview.
Drop a file hereor click to choose one — it opens in the studio with this tool ready. Small files need no account.Choose a fileHow it works
- 1Upload the MP4 video.
- 2Open audio extraction and choose AAC (M4A).
- 3Download the M4A file.
What you get
MP3 or AAC
MP3 for compatibility with every player, AAC (M4A) for a smaller file.
Then turn it into text
The same recording can go to transcription next, for a text version of everything that was said.
Same result in your code
What you run here is one multipart request over the API, with a webhook when the job is done.
Pay for processing time
One tariff for every operation, capped per file. A failed job is refunded automatically.
Same thing over the API
One header, one multipart request with the file, then poll the job or take a webhook. The same operation you just tried in the browser.
Questions
Is the audio re-encoded?
Yes — the soundtrack is encoded to the format you pick. The default bitrate is meant for everyday listening; speech and music both come through fine.
Is there a size or length limit?
Limits depend on your plan and are listed on the pricing page. A video that is too long is refused up front rather than cut off, and a refused file costs nothing.
Do I need an account?
Small files can be processed without signing up. An account adds a daily free allowance and an API key.
Can I automate it?
Yes. Send the file to the API with service “clipconvert” and operation “extract_audio” with the format aac, then poll the job or take a webhook.