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Video to MP3 Converter
Video to MP3 Converter
What is this tool?
A browser-based audio extractor built on ffmpeg.wasm. It maps the video's first audio stream straight into the LAME MP3 encoder — the picture is never decoded, which is why it finishes far faster than a video conversion — and can mix the result down to mono, which roughly halves the size of a speech recording.
When to use it
- Keeping the audio of a lecture, sermon or interview to listen to later
- Turning a recorded video call into an audio file for notes
- Pulling a soundtrack out of a clip for an edit
- Making a voice recording small enough to send
- Listening to a video on a player that only takes audio files
How to use it
- 1Drop in a video file — MP4, MOV, WebM, MKV and more
- 2Choose an MP3 bitrate: 320 kbps for music, 128 kbps or lower for speech
- 3Tick "Mix down to mono" for a voice recording to halve the size
- 4Click Extract MP3 and wait for the progress bar
- 5Listen to the result in the player, then download the MP3
Frequently asked questions
Which bitrate should I pick?
320 kbps for music you want to keep, 192 kbps as a good all-round default, and 128 kbps or 96 kbps for speech, where the difference is hard to hear and the file is much smaller.
What if the video has no sound?
The tool says so plainly instead of handing you an empty file — a silent screen recording has no audio track to extract.
Does extracting audio lose quality?
MP3 is a lossy format, so re-encoding an already-compressed soundtrack loses a little. At 192 kbps and above this is very hard to hear; at 96 kbps it is noticeable on music but fine for speech.
Is my video uploaded to a server?
No — it is decoded by WebAssembly inside your browser tab, and nothing leaves your device.