[opus] Opus 1.4 is out

Jean-Marc Valin jmvalin at jmvalin.ca
Thu Apr 20 22:26:19 UTC 2023

Hi everyone,

I'm happy to announce that Opus 1.4 has just been released. It is 
available at:

This new release brings the following improvements and fixes:
- Improved tuning of the Opus in-band FEC (LBRR). See 
https://gitlab.xiph.org/xiph/opus/-/issues/2360 for details
- Added an 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
In addition to the improvements above, this release includes many minor 
bug fixes.

Additionally, we have begun experiments on two upcoming major features:
- neural packet loss concealment:
- deep redundancy:

Although not included in this release, you can see two IETF drafts 
describing the proposed improvements:
- https://datatracker.ietf.org/doc/draft-valin-opus-extension/
- https://datatracker.ietf.org/doc/draft-valin-opus-dred/

The code is also available on this development branch:

Please report any problem you encounter.



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