Fully royalty-free, both patents and implementations.

What Is Opus?

Q: Is Opus better than G.722

Yes, both in quality and flexibility. Opus adapts bitrate to network; G.722 is fixed at 64 Kbps. Opus at 32 Kbps already exceeds G.722 at 64 Kbps.

Q: Do IP phones support Opus

Newer Yealink, Grandstream, and Snom models do, but support is not yet as universal as G.711 / G.722 in the IP phone market.

2026-05-07 2 min readSIPPER Team

Opus is an open royalty-free audio codec from IETF that adapts bitrate from 6 to 510 Kbps in real time. It outperforms other codecs at any equivalent bitrate and dominates WebRTC use cases.

Definition

Opus (IETF RFC 6716) combines SILK (speech) and CELT (music) algorithms, beating MP3, AAC, G.711, and G.722 at the same bitrate. Supports sample rates from 8 to 48 KHz.

Usage

WebRTC (browser-to-browser), Microsoft Teams, Zoom, Discord, Google Meet, YouTube. VoIP / SIP support is growing.

Related Concepts

Opus is the best fit for the open internet, it adapts bitrate live to network conditions, handling packet loss and jitter well.

Frequently Asked Questions

Is Opus better than G.722

Is Opus license-free

Do IP phones support Opus

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