Opus is a totally open, royalty-free, highly versatile audio codec. Opus is unmatched for interactive speech and music transmission over the Internet, but also intended for storage and streaming applications. It is standardized by the Internet Engineering Task Force (IETF) as RFC 6716 which incorporated technology from Skype's SILK codec and Xiph.Org's CELT codec.
Opus can handle a wide range of audio applications, including Voice over IP, videoconferencing, in-game chat, and even remote live music performances. It can scale from low bit-rate narrowband speech to very high quality stereo music.
Opus 1.4 brings the following improvements and fixes:
Improved tuning of the Opus in-band FEC (LBRR). See the
https://gitlab.xiph.org/xiph/opus/-/issues/2360 for details
Added a OPUS_SET_INBAND_FEC(2) option that turns on FEC, but does not
force SILK mode (FEC will be disabled in CELT mode)
Improved tuning and various fixes to DTX
Added Meson support, improved CMake support
Using libopus-1.4, libopusenc-0.2.1 and opusfile-0.12 - GCC 12.2.0 compiles.