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Opus Audio Codec 1.2-alpha is out

• ksec 10y ago
  3GPP were originally considering Opus for VoLTE, then they turned to EVS instead. Anyone have any idea the reason behind this? I believe Opus still do better then EVS in voice quality. Do we have any royalty free equivalent for AAC? On Video front we already have AV1 from Open Media and Daala from Mozilla.
  • derf_ 10y ago
    > Do we have any royalty free equivalent for AAC? Yes. It's called "Opus".
    • ksec 10y ago
      Opus was never intended for 128-256knps range.
      • MrZeus 10y ago
        "Opus supports all bitrates from 6 kbit/s to 510 kbit/s." https://tools.ietf.org/html/rfc6716#section-2.1.1 https://tools.ietf.org/html/rfc6716#section-2.1.1 Here's a public listening test conducted between Opus, AAC and Vorbis at ~105 kbit/s: http://listening-test.coresv.net/results.htm http://listening-test.coresv.net/results.htm