Question 1

Does it work with formats other than MP4?

Accepted Answer

Yes. Despite the name, it extracts the audio track from just about any common video — MP4, MOV, MKV, WebM and AVI — and saves it as an MP3. The video itself is discarded; you get just the sound.

Question 2

Is my video uploaded to a server?

Accepted Answer

No. The audio is extracted entirely in your browser, on your own device — your video is never uploaded. The only network request is a one-time download of the media engine (about 32 MB), which is then cached. Your file always stays local.

Question 3

What MP3 quality should I choose?

Accepted Answer

Higher bitrate means better sound but a bigger file. 320 kbps is near-CD quality, 192 kbps is a good balance for most music and speech, and 128 kbps is the smallest. Pick based on whether you care more about quality or file size.

Question 4

Why does the first run take longer?

Accepted Answer

The first time you use any media tool, the ffmpeg engine (about 32 MB) is downloaded once and cached, so later runs start immediately. Extraction then runs on your device — quick for short clips, longer for long videos — with a live progress bar. You can cancel any time.

Question 5

Is it free, with no sign-up or watermark?

Accepted Answer

Completely — no account, no watermark, and no limit on how many files you convert.

MP4 to MP3

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