Firefox 15 supports Opus free audio format
In Firefox 15 (Beta) implemented support for free audio format of Opus . This codec has recently been accepted for consideration by the IETF as a standard ; it is superior in quality to any other coding and sound transmission standards.
Opus has a unique combination of high quality and low latency.
All existing audio codecs can be divided into two groups: General-purpose codecs
(large delays, high quality)
Speech coding (low quality, small delays)
None of the above codecs has the flexibility to support any kind of audio encoding, both in maximum quality and with low latency.
Tests confirm:
At 64 kbps, Opus sounds better than HE-AAC or Vorbis
At 64 kbps Opus sounds like 96 kbps MP3
Opus is also well suited for broadcasting music at 6 kbps and 256 kbit / s, while on a wide band Opus provides compression “without hearing loss” of quality. The codec can dynamically switch to compression with a different bit rate, depending on changes in bandwidth conditions.
In tests, Opus proved to be the best codec for speech compression, that is, it is ideal not only for high-quality VoIP, but also for audio books and podcasts.
An Opus audio file is integrated into the web page code in the same way as other audio files: via a tag
Opus has a unique combination of high quality and low latency.
All existing audio codecs can be divided into two groups: General-purpose codecs
(large delays, high quality)
- MP3
- AAC (all types)
- Vorbis
Speech coding (low quality, small delays)
- G.729
- AMR-NB
- AMR-WB (G.722.2)
- Speex
- iSAC
- iLBC
- G.722.1 (all options)
- G.719
None of the above codecs has the flexibility to support any kind of audio encoding, both in maximum quality and with low latency.
Tests confirm:
At 64 kbps, Opus sounds better than HE-AAC or Vorbis
At 64 kbps Opus sounds like 96 kbps MP3
Opus is also well suited for broadcasting music at 6 kbps and 256 kbit / s, while on a wide band Opus provides compression “without hearing loss” of quality. The codec can dynamically switch to compression with a different bit rate, depending on changes in bandwidth conditions.
In tests, Opus proved to be the best codec for speech compression, that is, it is ideal not only for high-quality VoIP, but also for audio books and podcasts.
An Opus audio file is integrated into the web page code in the same way as other audio files: via a tag