The Opus audio codec reached the new major 1.2 release a few days ago with many quality improvements, new features, and bug fixes.
Changes in Opus 1.2 includes:
- 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)
Besides building the codec from source, a third-party PPA now is available to make it easy to install Opus 1.2 in Ubuntu 16.04 and/or Ubuntu 14.04.
1. Open terminal via Ctrl+Alt+T or by application launcher, when it opens, run command to add the PPA:
sudo add-apt-repository ppa:jonathonf/ffmpeg-3
Type in your password (no visual feedback due to security reason) when it asks and hit Enter.
2. Then upgrade the library and opus-tools via Software Updater:
Or simply run commands in terminal:
sudo apt-get update sudo apt-get install libopus0 opus-tools
NOTE: the PPA contains the latest FFMPEG 3 packages. If you want to install it, the Tesseract OCR PPA is required in Ubuntu 14.04 for the dependencies.
f you don’t want to upgrade your ffmpeg libraries, remove the PPA via command:
sudo add-apt-repository --remove ppa:jonathonf/ffmpeg-3
