# Convert Opus to M4A

Convert Opus to M4A right in your browser — free, private, nothing is uploaded. One-click re-encode for compatibility.

Opus delivers the best quality per bit of any mainstream codec — it beats MP3, Vorbis and AAC at almost every bitrate and powers WhatsApp voice notes, Discord and WebRTC. Device support, though, is still patchy outside browsers and messengers.

M4A wraps AAC audio in an MPEG-4 container — the format iTunes and Apple Music use. AAC squeezes better quality than MP3 out of the same bitrate, at the cost of slightly narrower support.

Converting Opus to M4A is a compatibility move: both formats are lossy, so the goal isn't quality — it's producing a file that fits Apple devices and small high-quality files. Expect the sound to stay essentially the same, with a small second round of encoding loss.

## Run it

- **Web (M4A preselected):** https://gizza.ai/tools/audio-convert/?format=m4a
- **CLI:** `gizza tool audio-convert 'url=https://example.com/input.opus' 'format=m4a'`
- **Parent tool docs:** https://gizza.ai/tools/audio-convert/index.md