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21 December, 2012
This is an alpha release for the upcoming 1.1 version. Compared to 1.0.2, it includes quality improvements, optimizations, bug fixes, as well as an experimental speech/music detector for mode decisions. All the fixes and improvements from 1.0.2 are also in this release. Quality improvements include unconstrained VBR, a bitrate boost for tonal frames, and improvements to tf estimation, transient detection and dynamic allocation. The code is available from the downloads page.
6 December, 2012
Opus 1.0.2 fixes an out-of-bounds read that could be triggered by a malicious Opus packet causing an integer wrap-around in the padding code. Considering that the packet would have to be at least 16 MB in size and that no out-of-bounds write is possible, the severity is very low. Other changes include fixes and improvements to the PLC and hybrid mode quality improvements. As usual, this release is fully compliant with the Opus specification. The code is available from the downloads page.
11 September, 2012
It's official, Opus has now been standardized by the IETF as RFC 6716. Along with the RFC are the first stable releases. Version 1.0.0 includes exactly the same source code as the reference implementation in the RFC. Version 1.0.1 also includes minor fixes that were made after the RFC was "frozen". Both releases are available from the downloads page.
4 September, 2012
This third release candidate for 1.0.1 has documenation and minor portability fixes as part of the final polish before release. Source code is available from the downloads page.
15 August, 2012
This second release candidate for 1.0.1 includes documentation fixes and a Windows build system. Source code is available from the archived downloads page.
8 August, 2012
Release candidates for the upcoming 1.0.0 and 1.0.1 releases are now available. Expect the final 1.0.0 release in the next few weeks along with the final Opus RFC. Version 1.0.1 will be released at the same time and includes minor fixes that did not make it to the RFC. Source code is available from the downloads page.
27 July, 2012
Participants to the IETF rtcweb working group have accepted (through typical IETF strong consensus) a proposal to select both Opus and G.711 as mandatory-to-implement (MTI) audio codecs. This means that all browsers that implement that standard will have to ship Opus support.
19 July, 2012
The latest Firefox beta now ships with support for Opus.
2 July, 2012
The IETF has just approved Opus for publication as an RFC. This should happen in the next few weeks, along with release 1.0.