List of open-source codecs

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This is a listing of open-source codecs—that is, open-source software implementations of audio or video coding formats. Many of the codecs listed implement media formats that are restricted by patents and are hence not open formats. For example, x264 is a widely used open source implementation of the heavily patent encumbered MPEG-4 AVC video compression standard.

Video codecs[edit]

Audio codecs[edit]

  • FLAC – Lossless codec developed by Xiph.Org Foundation.
  • LAME – Lossy compression (MP3 format).
  • TooLAME/TwoLAME – Lossy compression (MP2 format).
  • Musepack – Lossy compression; based on MP2 format, with many improvements.
  • Speex – Low bitrate compression, primarily voice; developed by Xiph.Org Foundation. Deprecated in favour of Opus according to www.speex.org.
  • CELT – Lossy compression for low-latency audio communication
  • libopus – A reference implementation of the Opus format, the IETF standards-track successor to CELT. (Opus support is mandatory for WebRTC implementations.)
  • libvorbis – Lossy compression, implementation of the Vorbis format; developed by Xiph.Org Foundation.
  • iLBC – Low bitrate compression, primarily voice
  • iSAC – Low bitrate compression, primarily voice; (free when using the WebRTC codebase)
  • TTA – Lossless compression
  • WavPack – Hybrid lossy/lossless
  • Bonk – Hybrid lossy/lossless; supported by fre:ac (formerly BonkEnc)
  • Apple Lossless – Lossless compression (MP4)
  • Fraunhofer FDK AAC – Lossy compression (AAC)
  • FFmpeg codecs in the libavcodec library, e.g. AC-3, AAC, ADPCM, PCM, Apple Lossless, FLAC, WMA, Vorbis, MP2, etc.
  • FAAD2 – open-source decoder for Advanced Audio Coding. There is also FAAC, the same project's encoder, but it is proprietary (but still free of charge).
  • libgsm – Lossy compression (GSM 06.10)
  • opencore-amr – Lossy compression (AMR and AMR-WB)
  • liba52 – a free ATSC A/52 stream decoder (AC-3)
  • libdca – a free DTS Coherent Acoustics decoder
  • Codec2 - Low bitrate compression, primarily voice

See also[edit]

References[edit]

  1. ^ "Schrodinger FAQ". Archived from the original on 2010-10-17. Retrieved 2011-03-05.