MP4 to OGG
Extracts the MP4 soundtrack and re-encodes it to Opus wrapped in OGG.
Drop an MP4 file here
Everything happens on your device — your files are never uploaded.
movie.mp4
—
Extracting audio…
Done
How it works
- 1 Drop your MP4 or pick it from your device.
- 2 Click Convert to OGG and watch the progress bar as the audio encodes.
- 3 Download the OGG. The video never leaves your browser.
Built with open source
- Mediabunny — Converts and edits video and audio in the browser via WebCodecs. Add-on encoders cover MP3, AAC, and FLAC. · MPL-2.0
Frequently asked
What codec is inside the OGG file? +
Opus. It's a modern open codec that sounds great at low bitrates, usually smaller than MP3 for the same perceived quality.
Is my MP4 uploaded anywhere? +
No. The video is decoded in your browser with WebCodecs, and only the audio gets encoded to Opus locally. Nothing is ever uploaded.
Will I lose quality? +
Opus is lossy, so re-encoding adds a small loss you usually can't hear. At its default bitrate it stays very close to the source.