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In an effort to bring open-source ideals to the world of multimedia the Xiph.Org Foundation develops a multitude of amazing products. This wiki describes our free and open protocols and software.

Demonstrations of Xiph technologies

Want to hear or see Xiph in action? These projects are using our codecs, formats, or libraries.


Container Formats


  • Compressed Audio/Video Codecs:
  • Uncompressed Audio/Video Codecs:
  • Timed Text/Metadata Codecs:
    • CMML: Continuous Media Markup Language, used for Annodex and subtitles (xine, vlc, gstreamer, and DirectShow support)
    • Kate: new format for lyrics and subtitles


  • Software for distributing media
    • Icecast: Streaming server
    • Ices: Source client for Icecast servers


Work in Progress

  • Work In Progress: codecs and software still in the research and development stages.
  • Todo: To-do list for various Xiph projects.

Project management

Resources for Video and Audio programmers

Wiki internal