Extract Audio from Video

How to use Extract Audio from Video

1. Choose one or more video files; the formats accepted are MP4, MOV, MKV, AVI, WebM, M4V, 3GP, FLV and WMV.
2. There are no options to set: the MP3 quality is fixed at a high VBR level.
3. Press Convert to MP3 and wait for the progress bar.
4. Download each MP3, or use Download all to get a ZIP.

What you get in the MP3

The video stream is ignored (-vn) and the first audio track is decoded and re-encoded with LAME at VBR quality 2. That setting usually averages around 170–210 kbps, which is transparent for most listeners, and the bitrate rises and falls with the complexity of the sound. The original sample rate is kept, and surround tracks are mixed down to stereo, since MP3 supports at most two channels.

MP3 is the safest format for car stereos, old phones and audio players. It suits students who want to revise recorded classes while commuting, or anyone who needs the narration from a screen recording without the picture.

Limitations

• Only one audio stream is converted. In a multi-language MKV, FFmpeg picks the track it ranks best (usually the one with most channels), which may not be your language.
• MP3 is lossy; if you plan to edit the audio further, a WAV output tool keeps more headroom.
• A video with no audio track at all will fail with an error.

Frequently asked questions

What bitrate is the MP3?

It is variable bitrate at LAME quality 2, generally averaging in the 170–210 kbps range. Speech-only recordings land lower, music higher.

Can I extract audio from a WhatsApp or phone video?

Yes. WhatsApp forwards are normally MP4 and phone recordings MP4 or MOV, both of which are accepted.

Can I cut the audio to one part?

This tool converts the whole soundtrack. Trim the video first with Trim Video, or trim the MP3 afterwards with an audio trimmer.

Does extraction happen online?

Nowhere but your own device. The page decodes the video and encodes the MP3 locally; nothing is uploaded.