What is Ogg Vorbis

1
What is Ogg Vorbis?

• Ogg is an Open Source multimedia initiative
  developed by Xiph.org
• Vorbis is the audio compression format
• Ogg is the container format

2
The Ogg Container

• Audio Codecs
• Lossy
• Speex (handles voice)
• Vorbis (music and general audio)
• Lossless
• FLAC (high fidelity)

3
The Ogg Container

• Video Codecs
• Theora (multiplexed with Vorbis)
• Tarkin (experimental)
• Text Codec
• Writ (subtitles or captions)

4
Quality and Compression

• Quality range from 45 to 500 kbits/s
• Transparency at 192 kbits/s
• better compression than MP3
• Pre-echo problem
• 'Tuned' version attempt to fix this

5
Licensing

• Libraries and SDK under BSD-style license
• Free to create and sell open or closed source
  software implementations of Vorbis codecs
• Players usually GPL

6
Popularity

• Portable music players iRiver, Neuros, Rio,
  Smartphones
• Software players Winamp, XMMS, MPlayer
• Used by video game developers Unreal Tournament,
  Harry Potter