Dirac 1.0.0 released

Dirac 1.0.0 has been released. The release tar-ball can be downloaded from


Dirac Compression System

Dirac is a video compression system that provides general-purpose video compression and decompression tools comparable with state-of-the-art systems. Dirac is a format and compression technology, not a specific codec. The most important part of the Dirac project is the specification which can be found at http://diracvideo.org/specifications.

Dirac Project
The initial implementation of Dirac at resulted in a research implementation which is referred to as the Dirac codebase. It is now called dirac-research. It is a reference implementation and also a codebase for future algorithmic
developments. Dirac 1.0.0 is the release of this codebase.

Dirac website
Information about Dirac and the associated projects can be found at http://diracvideo.org

What's new in this release
Several alpha and beta releases have preceded this release. The changes in 1.0.0 release are:

- Compliance with Dirac Bytestream specification
- Adaptive GOP structure
- Improved motion estimation.
- Improved pre-filtering.
- Major code refactor of encoder classes.
- Added conversion utility for horizontal 3/4
- DirectShow Filter released to be able to play
back Dirac v2.2.2 files raw bytestreams and
Dirac wrapped in AVI in Windows Media Player
and MPlayer Classic.

Dirac content creation and playback
Information on the end-user applications that support Dirac can be found at

Posted by Anuradha Suraparaju 2008-09-17