Google hitches Opus audio technology to WebRTC star reports that the developer version of Chrome now relies by default on Opus, a royalty-free audio compression technology designed for voice and music.

Chrome 27, making its way through the development pipeline, is helping to advance the fortunes of a new audio compression technology called Opus.

Opus is what’s called a codec — a technology to encode and decode streams of information, in this case audio. Technically, it’s actually two codecs in one, an approach that lets it span a range of uses from Internet telephony on slow networks to streaming high-quality music on fast networks.

One of its chief virtues is low latency: there’s not a long wait for audio to be encoded or decoded, something that’s not a big problem with streaming music but can cripple a real-time conversation. Another advantage from a programmer’s perspective is that unlike MP3 and AAC audio codecs, it’s available royalty-free.

Read more and see a comparison chart of audio codecs at

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