OggDirac
(Redirected from Dirac)
Dirac is an advanced royalty-free video compression format designed for a wide range of uses, from delivering low-resolution web content to broadcasting HD and beyond, to near-lossless studio editing.
More information is available on the Dirac homepage.
See http://diracvideo.org/download/mapping-specs/dirac-mapping-ogg-1.0.pdf for the official Ogg Dirac mapping.
The Ogg Dirac mapping does NOT use VorbisComment metadata.