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Xiph.org Opus FLAC Icecast Vorbis Daala Theora Speex XSPF

Resources by Project

The Xiph.Org Foundation is a non-profit corporation dedicated to protecting the foundations of Internet multimedia from control by private interests. Our purpose is to support and develop free, open protocols and software to serve the public, developer and business markets.

Xiph Community Updates

2019-04-15 Monty : "I'll be speaking in Norway next week (Oslo and Bergen)!"
2019-04-05 Jean-Marc Valin : "How Opus Came To Be"
2019-03-29 Monty : "Another new experimental codec from Xiph.Org!"
2019-03-29 Jean-Marc Valin : "A Real-Time Wideband Neural Vocoder at 1.6 kb/s Using LPCNet"
2017-01-13 Silvia Pfeiffer : "Annual Release of External-Videos plugin – we’ve hit v1.0"

Xiph.Org in the News

In our effort to bring open-source ideals to the world of multimedia, the Xiph.Org Foundation and its open-source community develops a multitude of amazing products.

Resources by Project

Container Formats

Ogg: Media container. This is our native format and the recommended container for all Xiph codecs.
Speex RTP: RTP payload format for voice
Vorbis RTP: RTP payload format for audio
Theora RTP: RTP payload format for video

Miscellaneous

XSPF: XSPF is the XML format for sharing playlists.
XiphQT: An implementation of our codecs for Apple's Quicktime and Core Audio.
oggdsf: An implementation of our codecs for MS Windows.
cortado: A java applet for Web browsers to display our codecs.

Helper Libraries

libao: A cross platform audio library.
liboggz: A simple programming interface for reading and writing Ogg files and streams.
libfishsound: A simple programming interface for decoding and encoding audio data using Xiph.Org codecs.

Software for Distributing Media

CD Paranoia Robust CD audio extraction
Icecast: Streaming server
IceS: Source client for Icecast Server

Codecs

Vorbis: Audio codec
Tremor: Fixed-point decoder
Daala: Next-generation experimental video codec
Theora: Video codec
FLAC: Free Lossless Audio Codec
Speex: Speech codec
CELT: Very low-delay audio codec
Opus: IETF Interactive speech/audio codec
Ogg Metadata: Arbitrary metadata format