libopus 1.2 – Opus Codec

This Opus 1.2 major release brings many quality improvements, new features, and bug fixes. You can read all the details in this release demo page. Changes since 1.1.x include:

Speech quality improvements especially in the 12-20 kbit/s range
Improved VBR encoding for hybrid mode
More aggressive use of wider speech bandwidth, including fullband speech starting at 14 kbit/s
Music quality improvements in the 32-48 kb/s range
Generic and SSE CELT optimizations
Support for directly encoding packets up to 120 ms
DTX support for CELT mode
SILK CBR improvements
Support for all of the fixes in draft-ietf-codec-opus-update-06 (the mono downmix and the folding fixes need --enable-update-draft)
Many bug fixes, including integer wrap-arounds discovered through fuzzing (no security implications)

There are no known regressions compared to the latest stable release (1.1.5). Please report any problems.

Source code: opus-1.2.tar.gz