Even though Opus is now standardized by the IETF, this Opus implementation will keep improving in the future.
Of course, all future versions will still be fully compliant with the Opus IETF specification.
See the development page for the latest development information.
Opus-tools provides command-line utilities to encode, inspect, and decode .opus files.
Opusfile provides application developers with a high-level API for decoding and seeking in .opus files. DLLs for the
required libraries libogg 1.3.2, libopus 1.1.1 and openssl, are also included in the binary package.
This Opus 1.2.1 minor release fixes a relatively rare
issue where the 1.2 encoder would wrongly assume a signal to be bandlimited to 12 kHz and not encode frequencies
between 12 and 20 kHz. This only happens on a few clips, but it is good to update to avoid a potential
loss of quality.
There are no other changes compared to 1.2. Please report any problems.
Opus 1.2-rc1 is
the first release candidate of the upcoming Opus 1.2 release. If no
issues are found with it, it will soon become 1.2-final, so we encourage
everyone to give it a try. Changes compared to 1.2-beta include:
Improves quality on files with powerful tones that cause MDCT leakage
Improves bit allocation on mode transitions (CELT to/from SILK/hybrid)
More ARM Neon optimizations
Fixes to the speech/music detection at the very beginning of files
Fixes to the unit tests (fixes illegal instructions and –disable-static)