Timothy B. Terriberry: 
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Anatomy of a Video Codec 2008, 30 Jan. 2008.

This talk explains the inner workings of the Ogg Theora video codec.

Note: The beginning of this talk was interrupted by a fire alarm. Unfortunately the video begins after the talk resumed, so a few introductory remarks were lost.


  • slides (PDF, 1 MB)
  • video (Theora+Vorbis, 70 minutes, 118 MB)
  • audio (Speex, 70 minutes, 6.4 MB)

CELT: A Low-latency, High-quality Audio Codec 2009, 22 Jan. 2009.

This talk describes the new CELT audio codec.