Audio Codec "Opus" is a new Internet standard


The universal "Opus Interactive Audio Codec", has been as expected, officially declared the Internet standard. The Internet Engineering Task Force (IETF) has published specifications and source code as a reference implementation of RFC 6716th The codec to be beside the traditional G.711 ITU-T used for live communication based on HTML5. The very liberal license permits the free use and modification. Although parts of the codec are protected by patents, but these should only be used as a defense against attacks by other patent holders.

Opus is already supported by a number of programs, including Firefox, FFmpeg, GStreamer and foobar2000, including the VLC media player and MP3 player firmware Rockbox Opus have announced support. To the development of the codecs Xiph.org Foundation, Mozilla, Skype, Broadcom, Google and Octasic contributed. Opus is designed for minimal latency algorithmic (from 5 ms), is suitable for interactive applications so as Voice over IP / chat from 6 kbit / s (mono), but also for streaming music with up to 510 kbit / s (stereo) . The codec supports both constant and variable bit rate and can adjust the audio bandwidth / sampling rate and the size of the transmitted audio frames dynamically.

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