Why is Opus so popular?

Opus delivers excellent quality across a huge bitrate range — from low-bitrate speech to full-band music — with very low latency. That is why it is the default codec for WebRTC, Discord, WhatsApp voice messages and more.

Are my Opus files uploaded?

No. Files you open from your device stay on your device and are decoded locally. Only the public sample tracks are requested from the server.

Is Opus better than MP3?

At the same bitrate Opus clearly outperforms MP3, especially at low bitrates for speech. It is a newer, open, royalty-free codec designed for the real-time internet.

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Opus Viewer

Free online Opus viewer. Play .opus audio directly in your browser without uploading.

.opus

Waterfall Nature Sounds (OPUS)

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About this file format

Opus (.opus), standardized by the IETF (RFC 6716, 2012) and backed by Xiph.Org, combines the SILK and CELT codecs to handle everything from low-bitrate speech to high-fidelity music with low latency. It is open and royalty-free and is now the dominant codec for real-time voice and modern streaming.

Opus Viewer

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