Ogg
From Just Solve the File Format Problem
OGG is a wrapper/container format for Vorbis sound data and various other audiovisual bitstreams developed by the Xiph open source project.
References
- OGG documentation from xiph.org
- RFC 3533: The Ogg Encapsulation Format Version 0
- RFC 5334: Ogg Media types Redefines application/ogg and registers video/ogg and audio/ogg.
- Ogg : Wikipedia
- Ogg File Format, from Library of Congress resource on Sustainability of Digital Formats