Ogg

• Extensions: ogg, ogm
• Company: Xiph

The Ogg format was invented by Xiph for use with the Vorbis audio codec. It has later been extended to support other codecs developed by Xiph: Theora video, FLAC audio, Speex audio, and Opus audio. OGM is an unofficial extension to include support for many other types of audio and video, including MPEG-4 video and MP3 audio.

Technical specifications

• General structural overview
• Detailed header and parsing specification
• Issues and practices for multiplexed Ogg streams

The Ogg bitstream format is also documented in the following IETF RFCs:

• RFC 3533 The Ogg Encapsulation Format Version 0
• RFC 3534 The application/ogg Media Type