Private media converter
Convert media without uploading it.
Choose what you want to do, add your file, and download the result. Everything is processed on your device.
Files stay privateNo account requiredWorks offline after first use
Convert your file
Three simple steps. Recommended settings are already selected.
1
What do you want to do?
Extract audio from an MP4 video as an MP3 music file.
2
Choose your file
Click, drag, or paste a file.
3
Convert and download
FFmpeg is ready to load in your browser.
No uploads or cloud storage
Free, with no sign-up
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Need more control?
History and technical details stay out of the way until you need them.
History and download preferences
Local history (0)
Only result metadata is stored; files and download links are not saved.
No history matches this filter yet.
Supported formats and browser notes
Format compatibility
The listed containers are supported by the FFmpeg core. File codecs and browser preview support may vary.
| Input | Output | Output codec | Browser limitations |
|---|---|---|---|
| MP4 (common H.264/AAC) | MP3 | libmp3lame | Preview support depends on the codecs inside the MP4 file. |
| WebM (common VP8/VP9 + Opus/Vorbis) | MP3 | libmp3lame | WebM works best in Chrome, Firefox, and Edge. |
| MOV | MP4 | libx264 + AAC | Some MOV or proprietary codecs may not be readable. |
| MP4, MOV, WebM, MKV | MP4 | libx264 + AAC | Container support does not guarantee that every input codec can be decoded. |
| WAV, MP3, OGG, M4A, AAC, FLAC | MP3 | libmp3lame | Input codecs unavailable in the core are rejected with a specific message. |
| WAV, MP3, OGG, M4A, AAC, FLAC | WAV | pcm_s16le | WAV files can be significantly larger. |
| WAV, MP3, OGG, M4A, AAC, FLAC | OGG | libvorbis | Safari may not play OGG previews. |
| WAV, MP3, OGG, M4A, AAC, FLAC | M4A / AAC | aac | M4A uses an MP4 container; raw AAC uses ADTS. |
| WAV, MP3, OGG, M4A, AAC, FLAC | FLAC | flac | FLAC preview support varies by browser. |