Tarkin

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Tarkin
Basic data

developer Xiph.Org Foundation
programming language C.
category free video codec
License GPL ( Free Software )
svn.xiph.org/trunk/tarkin

Tarkin is an experimental format for lossy compressed video data from the Ogg format family of the Xiph.Org Foundation .

Development began in early 2000 and was discontinued in August 2002 in favor of the sister project Theora . The project was mainly carried out by Jack Moffitt, Christopher Montgomery and Rick Franchuk.

It was named after a character from Star Wars named Wilhuff Tarkin .

technology

Tarkin is based on three-dimensional wavelet compression . A video block has two spatial and one temporal dimensions , which are encoded as a unit with a three-dimensional discrete wavelet transformation . This creates a strong contrast to the traditional method used by most common formats - including Theora - in which a two-dimensional discrete cosine transformation is applied to the individual image and the changes and movements occurring between the images ( motion compensation ) are coded in a separate step become.

Tarkin has the FourCC trkn . The reference implementation was developed in the C programming language and published as free software .

See also

  • Snow and Dirac - similar, more advanced projects

Web links

Individual evidence

  1. ↑ Tarkins Readme File
  2. ↑ http://wiki.xiph.org/Oggless#Codec_Identifier :