Opus Interactive Audio Codec!

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* Bitrates from 6 kb/s to 510 kb/s * Sampling rates from 8 kHz (narrowband to 48 kHz (fullband * Frame sizes from 2.5 ms to 60 ms * Support for both constant bitrate (CBR and variable bitrate (VBR * Audio bandwidth from narrowband to fullband * Support for speech and music * Support for mono and stereo * Support for up to 255 channels (multistream frames * Dynamically adjustable bitrate, audio bandwidth, and frame size * Good loss robustness and packet loss concealment (PLC * Floating point and fixed-point implementation You can read the full specification, including the reference implementation, in RFC 6716 http://tools.ietf.org/html/rfc6716.
An up-to-date implementation of the Opus standard is also available from the downloads http://opus-codec.org/downloads <

Opus Interactive Audio Codec alternatives

  • Vorbis

  • Ogg Vorbis is a fully open, general-purpose compressed audio format for mid to high quality (8kHz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to 128 kbps/channel. This places Vorbis in the same competitive class as audio representations such as MPEG-4 (AAC), and similar to, but higher performance than MPEG-1/2 audio layer 3, MPEG-4 audio (TwinVQ), WMA and PAC.

    tags: encoder audio-codec audio-codecs ogg-vorbis vbr

  • Matroska

  • The Matroska Multimedia Container is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows.

    tags: audio-and-video-codecs audio-codec decoder encoder lossless-compression

  • Speex

  • Speex is a patent-free audio compression format designed for speech and also a free software speech codec that may be used on VoIP applications and podcasts.

    tags: audio-compression

  • WavPack

  • WavPack is a completely open audio compression format providing lossless, high-quality lossy, and a unique hybrid compression mode. Although the technology is loosely based on previous versions of WavPack, the new version 4 format has been designed from the ground up to offer unparalleled performance and functionality.

    tags: audio-codec decoder encoder hybrid-codec lossless-compression

  • Apple Lossless

  • Apple Lossless (also known as ALAC) is an audio codec developed by Apple Inc. for lossless data compression of digital music.

    tags: audio-codec lossless-compression

  • Nero AAC Codec

  • Nero AAC reference quality MPEG-4 and 3GPP audio codec

    tags: command-line-interface aac m4a audio-codec aacplus