Convert WebM to M4A
WebM is the open web video format used by browsers and screen recorders; plenty of editors and apps still expect MP4. 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 WebM 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.